diff --git a/.nojekyll b/.nojekyll new file mode 100644 index 0000000..e69de29 diff --git a/404.html b/404.html new file mode 100644 index 0000000..d20ec9f --- /dev/null +++ b/404.html @@ -0,0 +1,1101 @@ + + + + + + + + + + + + + + + + + + + Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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404 - Not found

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+ + + + + + + + + + \ No newline at end of file diff --git a/FAQs/index.html b/FAQs/index.html new file mode 100644 index 0000000..366addb --- /dev/null +++ b/FAQs/index.html @@ -0,0 +1,1603 @@ + + + + + + + + + + + + + + + + + + + + + + + + + FAQs - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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FAQs

+ +

How Do I Confirm I'm Using Quad9?

+

The simplest test is to open on.quad9.net in your browser of choice.

+

Protocol Test - Confirm on which Protocol Quad9 received your query

+

Confirm which protocol is used when Quad9 receives your DNS queries. This is particularly relevant after setting up DNS encryption, such as DNS over TLS or DNS over HTTPS, in the operating system, router, DNS forwarder.

+

Execute the following command and refer to the possible responses below:

+
+
+
+

Resolve-DnsName -Type txt proto.on.quad9.net.

+
+
+

dig +short txt proto.on.quad9.net.

+
+
+
+

Possible Responses:

+
    +
  • do53-udp (53/UDP - Plaintext)
    • +
  • do53-tcp (53/TCP - Plaintext)
    • +
  • doh (443/TCP - DNS over HTTPS)
    • +
  • dot (853/TCP - DNS over TLS)
    • +
  • dnscrypt-udp (UDP - DNSCrypt)
    • +
  • dnscrypt-tcp (TCP - DNSCrypt)
    • +
+

If you do not receive a response (NXDOMAIN), then Quad9 was not used to perform this DNS query.

+

Identifying a Quad9 block

+

The quickest way to see if a domain is blocked at Quad9 is using our Blocked Domain Tester.

+

When Quad9 blocks a domain, the response is NXDOMAIN. NXDOMAIN is also returned when a domain does not exist.To differentiate between domains that are nonexistent, and domains that are blocked, we set the AUTHORITY value differently. When you receive an NXDOMAIN with AUTHORITY: 0, that is a block from Quad9. When you receive NXDOMAIN with AUTHORITY: 1, then that is a domain that does not exist.

+

A domain will also fail to resolve if DNSSEC authentication fails, but that will result in the SERVFAIL code instead of NXDOMAIN.

+
+
+
+

dig @9.9.9.9 isitblocked.org | grep "status\|AUTHORITY" +

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 29193
+;; flags: qr rd ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
+

+
+
+

dig @9.9.9.9 sfaisofnadgre.odafds | grep "status\|AUTHORITY:" +

;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 22595
+;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
+

+
+
+

dig @9.9.9.9 A brokendnssec.net +dnssec | grep status +

;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 40999
+

+
+
+
+

Detecting DNS Transparent Redirection (Hijacks)

+

Some ISPs, most often in Asia, Africa, or the Middle East, will transparently redirect DNS requests destined for third-party DNS services, like Quad9, to their own DNS forwarders/servers. This may be an attempt to enforce local policies/laws, or to simply increase their cache HIT rate on their DNS forwarders.

+

You can detect a transparent DNS redirection by executing the following command from the Command Prompt or Terminal of any operating system. If the answer is anything except resXXX.xxx.rrdns.pch.net, then DNS is being transparently redirected.

+
+
+
+
nslookup -q=txt -class=chaos id.server. 9.9.9.9 | Select-String "pch"
+
+
+
+
dig +short ch txt id.server. @9.9.9.9
+
+
+
+
+

If the output does not look similar to the following, or there is no output, then DNS is being transparently redirected.

+
+
+
+
Non-authoritative answer:
+"res200.vie.rrdns.pch.net"
+
+
+
+
"res860.qfra3.rrdns.pch.net"
+
+
+
+
+

My ISP is transparently redirecting DNS. Now what?

+

Please refer to our Setup Guides appended with (Encrypted) in the title. By using encrypted DNS, transparent DNS redirection will not be possible.

+

What is EDNS Client Subnet (ECS)?

+

Quad9's 9.9.9.11 service supports ECS.

+

EDNS Client Subnet (ECS) allows Quad9 to send a portion of your IP address to authoritative name servers, which helps major content providers (CDNs), such as Google, Microsoft, etc, accurately determine your geolocation.

+

ECS will have no effect on which Quad9 location your queries are sent to, it simply effects what information Quad9 forwards to the authoritative name server and may effect what IP address they return back. Quad9 uses anycast addressing to ensure you are routed to the nearest Quad9 location available to you regardless of whether or not you use our ECS service.

+

Since ECS does not play any role in determining where your queries are sent to, it does not have any positive or negative effect on the round trip time (ping) to Quad9

+

ECS can be viewed as a trade off between privacy and getting geospecific content. One option for the privacy focused user is to leave it disabled and only enable it if you notice a specific domain not delivering you the correct content or not loading at all.

+

Network Providers / DNS Leak Tests

+

Quad9 utilizes multiple network providers in our global network. When running a DNS leak test, it's expected to see IP addresses owned by the following providers:

+
+

Recommended DNS Leak Test Tool

+

dnscheck.tools

+
+
    +
  • WoodyNet (AKA PCH.net)
    • +
  • PCH.net
    • +
  • i3D
    • +
  • EdgeUno
    • +
  • Equinix Metal (FKA: Packet, Packet.net, or Packethost)
    • +
  • Path.net (Path Network)
    • +
  • E-MAX (Bratislava, SK)
    • +
+

These organizations are also listed on the Sponsors page of the Quad9 website: quad9.net/about/sponsors

+

If you are trying to simply determine if you are using Quad9, you can visit on.quad9.net instead of relying on a DNS leak test. However, a DNS leak test can be useful to ensure you're exclusively using Quad9, which is required to ensure that all of your DNS requests will be protected by Quad9.

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+ + + + + + + + + + \ No newline at end of file diff --git a/Quad9_For_Organizations/DNS_Forwarder_Best_Practices/index.html b/Quad9_For_Organizations/DNS_Forwarder_Best_Practices/index.html new file mode 100644 index 0000000..a3d3a60 --- /dev/null +++ b/Quad9_For_Organizations/DNS_Forwarder_Best_Practices/index.html @@ -0,0 +1,1648 @@ + + + + + + + + + + + + + + + + + + + + + + + + + DNS Forwarder Best Practices - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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DNS Forwarder Best Practices

+ +

Overview

+

You're administrating DNS for a building, office, business, ISP, etc, and you want to use Quad 9. Great choice!

+
+

Note

+

For ISPs or organizations with more than 5,000 users behind a forwarding cache, or if you expect more than 500 queries per second from a single egress IP address, please contact Quad9 Support with the details of your deployment, so that we can work together to ensure a smooth and successful deployment.

+
+

Caching forwarders and their optimal configuration are critical when sending queries en masse to Quad9, and is highly preferred over direct assignment via DHCP to end users with regards to:

+

Performance

+

Reducing the amount of queries that recurse to Quad9, saving bandwidth and providing a faster experience for the end user when their queries are already in the forwarders' cache.

+

Security

+

Enabling query logging or some type of high-level metrics is advised to identify possible compromise from specific endpoints or customers, and is sometimes required by local law.

+

Local Policy

+

Being able to block or analyze certain FQDNs at the forwarder level puts more control in the hands of the network administrator without relying exclusively on Quad9 to block malicious domains.

+

When setting Quad9 as the recursive resolver in your infrastructure and caching DNS forwarders, please consider the following best practices.

+

Exclusivity

+

Since DNS forwarders use round-robin ordering when forwarding queries to a list of recursive DNS servers, Quad9 must be set as the exclusive recursive DNS servers in your forwarders. Adding additional, non-Quad9 recursive DNS servers will result in a percentage of your DNS queries not being protected by Quad9's threat blocking.

+

Caching

+

It is imperative that your DNS forwarders are configured to cache response data in order to avoid excessive recursive queries to Quad9 and to provide significantly faster DNS resolution for devices on the network.

+

Ensure that your DNS forwarders have enough memory or disk space allocated to the cache to avoid the cache filling up.

+

The amount of memory that should be dedicated to DNS caching varies greatly from megabytes to gigabytes based on the amount of DNS requests originating from your network endpoints.

+
+
+
+

Bind caches in memory by default, so the only limitation is exhausting available memory in the system.

+

To check the size of the current cache, you can dump the cache to a local file and then examine the file size, which will be approximately how much memory is being used by cache:

+
rndc dumpdb -all
+
+
ls -alh /var/bind/
+
+
+
+

Caching is disabled by default, but can be enabled for in-memory storage.

+
+
+

Allocated cache size is determined by the msg-cache-size and rrset-cache-size options in the unbound.conf file.

+

You can check the amount of memory that your cache is currently using to compare against the cache size you allocated in unbound.conf by using the unbound-control command to view stats for mem.cache.rrset and mem.cache.message values.

+
+
+

Knot Resolver caches on disk by default, but can be configured to use memory/tmpfs, backends, and share cache between instances. Knot Resolver has excellent documentation about all things caching.

+
+
+

In-memory caching can be configured using the Set-DnsServerCache cmd applet.

+

Memory usage can be checked using the Get-DnsServerStatistics cmd applet.

+
+
+
+

Use the Primary and Secondary Quad9 IP Addresses

+

Configuring both the primary and secondary IP of your desired Quad9 service helps naturally load balance the DNS queries in the Quad9 infrastructure.

+

Use IPv6

+

If your network is capable of IPv6, also configure the primary and secondary IPv6 addresses of your desired Quad9 service in your DNS forwarders, which helps naturally load balance the DNS queries in the Quad9 infrastructure.

+

If IPv6 is not in use, Quad9 strongly encourages you to investigate how to get it enabled on your network. IPv6 route paths are often faster compared to IPv4 paths, which leads to a higher chance of success at faster speeds with better redundancy.

+

Separate IP Addresses for Each DNS Forwarder

+

Each DNS forwarder should, ideally, send and receive DNS queries to Quad9 using different public IPv4 and IPv6 addresses, even if the addresses are within the same subnet.

+

Disable DNSSEC Validation

+

Since Quad9 already performs DNSSEC validation, DNSSEC being enabled in the forwarder will cause a duplication of the DNSSEC process, significantly reducing performance and potentially causing false BOGUS responses.

+
+
+
+

Add this in dnsdist.conf above your pool assignment. +

if noDNSSECOnNOSEC then
+  addAction(NetmaskGroupRule(nmgNOSEC, false), SetDisableValidationAction(), { name="R_NO_DS" })
+end
+

+
+
+

Add this to the kresd.conf file and reload/restart the kresd service. +

-- turns off DNSSEC validation
+trust_anchors.remove('.')
+

+
+
+

In recursor.conf, disable dnssec and reload/restart pdns-recursor. +

dnssec=off
+

+
+
+

Comment out these lines in unbound.conf and reload/restart unbound. +

trust-anchor-file:
+auto-trust-anchor-file:
+trust-anchor:
+trusted-keys-file:
+

+
+
+
+

Disable QNAME Minimization

+

QNAME Minimization is a privacy feature that is intended to be used when you operate a recursive resolver (Quad9), but in a DNS forwarder, it provides no privacy enhancement and significantly reduces performance. What is QNAME Minimization?

+
+
+
+

In the options { section of the named.conf file, add the following line and reload/restart named/bind9. +

qname-minimization disabled;
+

+
+
+

QNAME Minimization is not supported in dnsdist. Nothing to do here.

+
+
+

Add this in the unbound.conf and reload/restart unbound. +

qname-minimisation: no
+

+
+
+

In the kresd.conf file, add a policy to disable QNAME Minimization and restart/reload the kresd service. +

policy.add(policy.all(policy.FLAGS('NO_MINIMIZE')))
+

+
+
+
+

Questions? Issues? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
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+ +
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+
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+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Android/Android_9+_(Encrypted)/index.html b/Setup_Guides/Android/Android_9+_(Encrypted)/index.html new file mode 100644 index 0000000..9f8e3fd --- /dev/null +++ b/Setup_Guides/Android/Android_9+_(Encrypted)/index.html @@ -0,0 +1,1492 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Android 9+ (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Android 9+ (Encrypted)

+ +

Overview

+

Android 9 and later includes the Private DNS feature, which allows you to connect to DNS servers using DNS over TLS (DoT). It is important to note, that the private DNS function does not work if the Quad9 Connect app is installed and enabled. To configure your Android device to use Quad9 in this way, follow the steps below.

+
+

VPNs

+

The Private DNS feature will not be utilized if you are using a VPN. If using a VPN, instead, configure Quad9's IP addresses in your VPN's Custom DNS settings. Please refer to your VPN provider's documentation fr more information

+
+

Instructions

+
    +
  • +

    Open the Settings app on your Android device.

    +
      +
    • Select Network & Internet.
        +
      • Select Private DNS.
        • +
      +
      • +
    +
    • +
  • +

    Select Private DNS provider hostname

    +
      +
    • Enter: dns.quad9.net
        +
      • Press Save
        • +
      +
      • +
    +
    • +
+

Verify Configuration

+

Visit on.quad9.net in your browser of choice.

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
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+ +
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+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/ChromeOS_(Chromebook)/index.html b/Setup_Guides/ChromeOS_(Chromebook)/index.html new file mode 100644 index 0000000..62a5952 --- /dev/null +++ b/Setup_Guides/ChromeOS_(Chromebook)/index.html @@ -0,0 +1,1491 @@ + + + + + + + + + + + + + + + + + + + + + + + + + ChromeOS (Chromebook) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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ChromeOS (Chromebook)

+ +

Overview

+

Quad9 Connect is an Android application compatible with ChromeOS using the Google Play Store. It creates a secure tunnel between the device and Quad9 for sending DNS queries via DNS over Quad9 Connect provides additional features like a query log, one-click service switching, and the ability to report false positives from the Query Log.

+

Quad9 Connect is not a VPN, but uses the VPN functionality of the device to achieve encrypted DNS and the features associated with the application. When Quad9 Connect is enabled, it is not possible to use another VPN connection at the same time. If using a VPN, consider setting Quad9's DNS servers in the "Custom DNS" settings of your VPN client.

+

Instructions

+
    +
  • +

    Install Quad9 Connect

    +
      +
    • In the Google Play Store, search for and install the app: Quad9 Connect
      • +
    +
    • +
  • +

    Display Preference

    +
      +
    • You can choose how you want the app to be displayed: Phone, Tablet, or Resizable. You can select your preference.
      • +
    +
    • +
  • +

    Read and click OK when prompted for the connection request.

    +
    • +
+
+

You have to connect to this VPN to use Quad9 Connect.

+
+
    +
  • Click the play icon to connect!
    • +
+

The number ‘9’ and VPN key logo should appear in the bottom right corner of your screen.

+

Verify Configuration

+

To confirm you're using Quad9, visit: on.quad9.net

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/DNS_Forwarders/Windows_Server/index.html b/Setup_Guides/DNS_Forwarders/Windows_Server/index.html new file mode 100644 index 0000000..d85fc2c --- /dev/null +++ b/Setup_Guides/DNS_Forwarders/Windows_Server/index.html @@ -0,0 +1,1482 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Windows Server - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Windows Server

+ +

Overview

+

Set up Quad9 in Windows DNS Server for use in DNS forwarding.

+
+

Note

+

Before proceeding, please refer to our DNS Forwarder Best Practices article.

+
+

Instructions

+
    +
  • +

    Open Server Manager from the Start menu.

    +
      +
    • From Server Manager, select Tools > DNS
      • +
    +
    • +
  • +

    From the DNS Manager, right-click your server and select Properties

    +
      +
    • Select the Forwarders tab and then select Edit.
        +
      • Add the following IP addresses: 9.9.9.9, 149.112.112.112
        • +
      • If your network supports IPv6, also add: 2620:fe::fe, 2620:fe::9
          +
        • Click "Apply"
          • +
        +
        • +
      +
      • +
    +
    • +
+

Questions? Issues? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
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+
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+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Linux_and_BSD/Fedora_38/index.html b/Setup_Guides/Linux_and_BSD/Fedora_38/index.html new file mode 100644 index 0000000..197d6c4 --- /dev/null +++ b/Setup_Guides/Linux_and_BSD/Fedora_38/index.html @@ -0,0 +1,1544 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Fedora 38 - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Fedora 38

+ +

Overview

+

The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on a single system, please follow the steps below to configure Fedora 38 to use Quad9.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+

IPv4

+
    +
  • +

    Click the Network or WiFi icon in the system tray at the top-right corner of the screen.

    +
      +
    • Click the > next to the active connection.
        +
      • Select Wired Settings or Wireless Settings.
        • +
      +
      • +
    +
    • +
  • +

    Click the ⚙ icon next to your connection.

    +
    • +
  • +

    Click the IPv4 tab

    +
      +
    • Disable Automatic DNS
        +
      • Enter the Quad9 IP addresses of your preferred service.
        • +
      +
      • +
    +
    • +
+

Multiple IP addresses can be entered in the list using comas.

+

9.9.9.9, 149.112.112.112

+
    +
  • If you will not use IPv6, click Apply to complete the setup process, and then confirm you're using Quad9.
    • +
+

IPv6 (Optional)

+

If your network supports IPv6, it's also recommended to configure the Quad9 IPv6 addresses. If you're not sure if IPv6 is configured on your network, you can test that here: https://test-ipv6.com/

+
    +
  • Select the IPv6 tab
      +
    • Disable Automatic DNS
        +
      • Enter the Quad9 IP addresses of your preferred service.
        • +
      +
      • +
    +
    • +
+

Multiple IP addresses can be entered in the list using comas.

+

2620:fe::fe, 2620:fe::9

+
    +
  • Click Apply to complete the setup process.
    • +
+

Verify Configuration

+

Confirm you're using Quad9 by visiting on.quad9.net in your preferred browser.

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
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FreeBSD (Encrypted)

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Overview

+

This article describes how to configure and use FreeBSD's pre-installed "local_unbound" service in order to send encrypted DNS via DNS over TLS to Quad9.

+

This was tested using FreeBSD 13.1, but should work with 12.X as well.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+
+

Warning

+

FreeBSD, by default, installs a local instance of Unbound DNS. This is meant to act as a local, caching DNS forwarder for the local machine only, and is not intended to act as a DNS forwarder for other network devices. If you want to run Unbound DNS on FreeBSD for the purposes of running a caching DNS forwarder that will be used by multiple devices on the network, FreeBSD recommends installing the dns/unbound package instead. These instructions are only valid for the "local_unbound" service.

+
+

Instructions

+

You will need the sudo command to run the commands below. Alternatively, you can simply use the su command to become the root user and execute these commands directly as the root user, in which case, you'll need to remove "sudo" from all the commands below.

+
    +
  • Install the dig command so you can test DNS resolution is working as expected:
    • +
+
pkg install bind-tools
+
+
    +
  • Verify local_unbound is Enabled
    • +
+
sudo grep unbound /etc/rc.conf
+
+

If the following output is produced, local_unbound is already enabled, and you can skip to the next section:

+
local_unbound_enable="YES"
+
+
    +
  • If there is no output after this command, then local_unbound must be enabled.
      +
    • Tell the system that we want to use local_unbound: +
      echo 'local_unbound_enable="YES"' >> /etc/rc.conf
+
      • +
    +
    • +
+

Then reboot the system (yes, really):

+
reboot
+
+
    +
  • Enable local_unbound:
    • +
+
sudo local-unbound-setup
+
+

The output should similar to this, but may differ slightly:

+
destination: 
+Extracting forwarders from /etc/resolv.conf.
+/var/unbound/forward.conf not modified
+/var/unbound/lan-zones.conf not modified
+/var/unbound/control.conf not modified
+/var/unbound/unbound.conf not modified
+local_unbound not running? (check /var/run/local_unbound.pid).
+Starting local_unbound.
+/etc/resolvconf.conf created
+Original /etc/resolv.conf saved as /var/backups/resolv.conf.20220625.200835
+
+

Configuring local_unbound for DNS over TLS to Quad9

+

This command will back up the default configuration files, download the modified config files from the attachment of this article, and restart the local_unbound service.

+
sudo mv /var/unbound/forward.conf /var/unbound/forward-ORIG.conf && sudo mv /var/unbound/unbound.conf /var/unbound/unbound-ORIG.conf && sudo fetch -o /var/unbound/unbound.conf https://docs.quad9.net/assets/conf/freebsd/unbound.conf && sudo fetch -o /var/unbound/forward.conf https://docs.quad9.net/assets/conf/freebsd/forward.conf && sudo service local_unbound restart
+
+

These files are configured for our 9.9.9.9 service by default, without IPv6. If you'd like to use the .10 or .11 service instead, and/or enable IPv6, open the /var/unbound/forward.conf file and un-comment/comment out the appropriate lines.

+

Verify Configuration

+

You'll need two Terminal sessions/windows

+

In the first session, start a packet capture to filter for DNS over TLS traffic:

+
sudo tcpdump -n 'port 853'
+
+

In the second session, generate some DNS lookups:

+
dig +short quad9.net && dig +short www.quad9.net && dig +short zombo.com
+
+

Refer back to the first session. If you see any output, your system is now using DNS over TLS to send encrypted DNS to Quad9:

+
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
+listening on em0, link-type EN10MB (Ethernet), capture size 262144 bytes
+20:30:21.004625 IP 192.168.1.118.29017 > 149.112.112.112.853: Flags [S], seq 255439876, win 65535, options [mss 1460,nop,wscale 6,sackOK,TS val 2441683586 ecr 0], length 0
+20:30:21.011088 IP 149.112.112.112.853 > 192.168.1.118.29017: Flags [S.], seq 838572319, ack 255439877, win 28960, options [mss 1460,nop,nop,TS val 3171725219 ecr 2441683586,nop,wscale 8], length 0
+20:30:21.011140 IP 192.168.1.118.29017 > 149.112.112.112.853: Flags [.], ack 1, win 1027, options [nop,nop,TS val 2441683592 ecr 3171725219], length 0
+20:30:21.011628 IP 192.168.1.118.29017 > 149.112.112.112.853: Flags [P.], seq 1:294, ack 1, win 1027, options [nop,nop,TS val 2441683592 ecr 3171725219], length 293
+20:30:21.017885 IP 149.112.112.112.853 > 192.168.1.118.29017: Flags [.], ack 294, win 118, options [nop,nop,TS val 3171725226 ecr 2441683592], length 0
+20:30:21.018447 IP 149.112.112.112.853 > 192.168.1.118.29017: Flags [.], seq 1:1449, ack 294, win 118, options [nop,nop,TS val 3171725227 ecr 2441683592], length 1448
+20:30:21.018453 IP 149.112.112.112.853 > 192.168.1.118.29017: Flags [.], seq 1449:2897, ack 294, win 118, options [nop,nop,TS val 3171725227 ecr 2441683592], length 1448
+
+

Undo

+

To undo the configuration changes to local_unbound, simply run this command to restore the original files and restart local_unbound:

+
sudo mv /var/unbound/forward-ORIG.conf /var/unbound/forward.conf && sudo mv /var/unbound/unbound-ORIG.conf /var/unbound/unbound.conf && sudo service local_unbound restart
+
+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
+ + + +
+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Linux_and_BSD/Linux_Mint_21.2/index.html b/Setup_Guides/Linux_and_BSD/Linux_Mint_21.2/index.html new file mode 100644 index 0000000..715fc99 --- /dev/null +++ b/Setup_Guides/Linux_and_BSD/Linux_Mint_21.2/index.html @@ -0,0 +1,1518 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Linux Mint 21.2 - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+ + + + + + +
+
+ + + +
+
+
+ + + + + + + +
+
+
+ + + + +
+
+ + + + +

Linux Mint 21.2

+ +

Overview

+

The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on a single system, please follow the steps below to configure Linux Mint to use Quad9.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+
    +
  • Click the Network or Wi-Fi icon on the system tray in the bottom-right corner.
      +
    • Click Network Settings
        +
      • Click the ⚙ icon on the bottom-right corner of the dialogue window.
        • +
      +
      • +
    +
    • +
+

IPv4

+
    +
  • Select IPv4 on the left-side menu.
      +
    • In the DNS section:
        +
      • Disable Automatic
          +
        • Click the :plus: botton to add a second Server field.
            +
          • Enter 9.9.9.9 in the first Server field, and 149.112.112.112 in the second.
              +
            • Click Apply
              • +
            +
            • +
          +
          • +
        +
        • +
      +
      • +
    +
    • +
+

Verify Configuration

+

Confirm you're using Quad9 by visiting on.quad9.net in your preferred browser.

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
+ + + +
+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Linux_and_BSD/MX_Linux_23/index.html b/Setup_Guides/Linux_and_BSD/MX_Linux_23/index.html new file mode 100644 index 0000000..3094742 --- /dev/null +++ b/Setup_Guides/Linux_and_BSD/MX_Linux_23/index.html @@ -0,0 +1,1498 @@ + + + + + + + + + + + + + + + + + + + + + + + + + MX Linux 23 - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
+
+ +
+ + + + + + +
+ + +
+ +
+ + + + + + +
+
+ + + +
+
+
+ + + + + + + +
+
+
+ + + + +
+
+ + + + +

MX Linux 23

+ +

Overview

+

The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on a single system, please follow the steps below to configure MX Linux 23 to use Quad9.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+
    +
  • +

    Right click on the Network/WiFi icon in the system tray on the left side of the screen.

    +
      +
    • Select Edit Connections
        +
      • Select your connection Type (Wired or Wi-Fi), then click the ⚙ button at the bottom of the window.
        • +
      +
      • +
    +
    • +
  • +

    Select the IPv4 Settings tab.

    +
      +
    • Change Method to Automatic (DHCP) addresses only
        +
      • In the DNS Servers field, add: 9.9.9.9,149.112.112.112
          +
        • Click Save
          • +
        +
        • +
      +
      • +
    +
    • +
+

Verify Configuration

+

Confirm you're using Quad9 by visiting on.quad9.net in your preferred browser.

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
+ + + +
+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Linux_and_BSD/OpenBSD_(Encrypted)/index.html b/Setup_Guides/Linux_and_BSD/OpenBSD_(Encrypted)/index.html new file mode 100644 index 0000000..5d0b24e --- /dev/null +++ b/Setup_Guides/Linux_and_BSD/OpenBSD_(Encrypted)/index.html @@ -0,0 +1,1539 @@ + + + + + + + + + + + + + + + + + + + + + + + + + OpenBSD (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+ +
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+
+ + + + +
+
+ + + + +

OpenBSD (Encrypted)

+ +

Overview

+

This article describes how to configure and use Unbound on OpenBSD in order to send encrypted DNS via DNS over TLS to Quad9.

+

This was tested using OpenBSD 7.1.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+
+

Warning

+

Unbound DNS is installed by default on standard OpenBSD installations. This is meant to act as a local, caching DNS forwarder for the local machine only, and is not intended to act as a DNS forwarder for other network devices. If you want to run Unbound DNS on OpenBSD for the purposes of running a caching DNS forwarder that will be used by multiple devices on the network, you can modify the interface and access-control values in unbound.conf appropriately, which by default, only allow DNS queries from localhost.

+
+

Instructions

+

You must be logged in as the root user directly or by running the su command and typing in your password in a Terminal session.

+
    +
  • Back up the default unbound.conf file and download the replacement unbound.conf file, which is pre-configured for sending DNS queries to Quad9 via DNS over TLS.
    • +
+
+

Note

+

You're encouraged to download and inspect the unbound.conf file in a text editor, which is attached to this article, before downloading it to your OpenBSD system.

+
+
mv /var/unbound/etc/unbound.conf /var/unbound/etc/unbound.BAK && ftp -o /var/unbound/etc/unbound.conf https://docs.quad9.net/assets/conf/openbsd/unbound.conf
+
+

Optional: If your network supports IPv6, open the /var/unbound/etc/unbound.conf file on OpenBSD with your favorite text editor, and make the following changes, removing the # (comment) before these lines begin.

+

Before

+
# do-ip6: no
+# forward-addr: 2620:fe::fe@853#dns.quad9.net
+# forward-addr: 2620:fe::9@853#dns.quad9.net
+
+

After

+
do-ip6: yes
+forward-addr: 2620:fe::fe@853#dns.quad9.net
+forward-addr: 2620:fe::9@853#dns.quad9.net
+
+
    +
  • Set Unbound to start on system startup, and enable the service (run these commands one at a time):
    • +
+

rcctl enable unbound
+
+
rcctl start unbound
+

+

Verify Configuration

+

Open a separate/second Terminal session to the OpenBSD system as the root user and start a packet capture, filtering for port 853 (DNS over TLS port): +tcpdump -n 'port 853'

+
    +
  • On your first Terminal session, make sure Unbound can answer DNS queries: +dig +short quad9.net @127.0.0.1
    • +
+

The result should be: 216.21.3.77

+

On your second Terminal session, tcpdump should show output like this, which confirms that the DNS query was sent to Quad9 with DNS over TLS: +

tcpdump: listening on em0, link-type EN10MB
+00:29:08.307240 192.168.1.194.42064 > 149.112.112.112.853: S 3620809840:3620809840(0) win 16384 <mss 1460,nop,nop,sackOK,nop,wscale 6,nop,nop,timestamp 495425124 0> (DF)
+00:29:08.313467 149.112.112.112.853 > 192.168.1.194.42064: S 1684627303:1684627303(0) ack 3620809841 win 28960 <mss 1460,nop,nop,timestamp 3541989193 495425124,nop,wscale 8> (DF)
+00:29:08.313559 192.168.1.194.42064 > 149.112.112.112.853: . ack 1 win 256 <nop,nop,timestamp 495425124 3541989193> (DF)
+00:29:08.313895 192.168.1.194.42064 > 149.112.112.112.853: P 1:310(309) ack 1 win 256 <nop,nop,timestamp 495425124 3541989193> (DF)
+00:29:08.319973 149.112.112.112.853 > 192.168.1.194.42064: . ack 310 win 118 <nop,nop,timestamp 3541989200 495425124> (DF)
+00:29:08.320719 149.112.112.112.853 > 192.168.1.194.42064: . 1:1449(1448) ack 310 win 118 
+

+

Set your system to start using Unbound for DNS by backing up the existing resolv.conf file and set 127.0.0.1 as the DNS server for the system: +

cp /etc/resolv.conf /etc/resolv.BAK && echo "nameserver 127.0.0.1" > /etc/resolv.conf
+

+

Undo

+

If you want to stop using Unbound as the DNS server, simply restore the backed-up resolv.conf file:

+
mv /etc/resolv.BAK /etc/resolv.conf
+
+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
+ + + +
+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Linux_and_BSD/Ubuntu_20.04_and_22.04/index.html b/Setup_Guides/Linux_and_BSD/Ubuntu_20.04_and_22.04/index.html new file mode 100644 index 0000000..3b314e5 --- /dev/null +++ b/Setup_Guides/Linux_and_BSD/Ubuntu_20.04_and_22.04/index.html @@ -0,0 +1,1538 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Ubuntu 20.04 and 22.04 - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
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+ + + + +

Ubuntu 20.04 and 22.04

+ +

Overview

+

The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on a single system, please follow the steps below to configure Ubuntu 22.04 or 22.04 LTS to use Quad9.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+

IPv4

+
    +
  • +

    From the Ubuntu desktop, select the drop down menu in the top right corner of the screen, expand either Wired Connection or Wireless Connection based on your connection type, then select Wired Settings or Wireless Settings.

    +
    • +
  • +

    Click the ⚙ icon next to your connection.

    +
    • +
  • +

    Click the IPv4 tab

    +
      +
    • Disable Automatic DNS
        +
      • Enter the Quad9 IP addresses of your preferred service.
        • +
      +
      • +
    +
    • +
+

Multiple IP addresses can be entered in the list using comas.

+

9.9.9.9, 149.112.112.112

+
    +
  • If you will not use IPv6, click Apply to complete the setup process, and then confirm you're using Quad9.
    • +
+

IPv6 (Optional)

+

If your network/computer support IPv6, it's also recommended to configure the Quad9 IPv6 addresses. If you're not sure if IPv6 is configured on your network, you can test that here: https://test-ipv6.com/

+
    +
  • Select the IPv6 tab
      +
    • Disable Automatic DNS
        +
      • Enter the Quad9 IP addresses of your preferred service.
        • +
      +
      • +
    +
    • +
+

Multiple IP addresses can be entered in the list using comas.

+

2620:fe::fe, 2620:fe::9

+
    +
  • Click Apply to complete the setup process.
    • +
+

Verify Configuration

+

Confirm you're using Quad9 by visiting on.quad9.net in your preferred browser.

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
+ + + +
+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Linux_and_BSD/Ubuntu_22.04_(Encrypted)/index.html b/Setup_Guides/Linux_and_BSD/Ubuntu_22.04_(Encrypted)/index.html new file mode 100644 index 0000000..8019257 --- /dev/null +++ b/Setup_Guides/Linux_and_BSD/Ubuntu_22.04_(Encrypted)/index.html @@ -0,0 +1,1525 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Ubuntu 22.04 (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ + + + +
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+ + + + +

Ubuntu 22.04 (Encrypted)

+ +

Overview

+

Note: The maintainers of systemd-resolved emphasize that this DNS over TLS implementation is currently a work in progress. You may consider using Stubby instead if experiencing performance issues. See here for Ubuntu 18.04 / 20.04 + Stubby instructions.

+

Ubuntu 22.04 and Linux Mint 20.3 or later support DNS over TLS natively in systemd-resolved, but the option is not available in the GUI.

+
+

Bug

+

While this is technically also supported in Ubuntu 20.04, we do not recommend using this method for 20.04, since it uses an older systemd-resolve version which has problems.

+
+
+

Bug

+

The DNSSEC option should not be enabled in systemd-resolved. It is extremely buggy, and it would only duplicate the DNSSEC validation process which Quad9 already performs, significantly reducing performance.

+
+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+
    +
  • +

    Configure Quad9 in the Network Settings (Ubuntu, Linux Mint).

    +
    • +
  • +

    Open the Terminal application, and copy/paste these commands to enable DNS over TLS. When prompted for your password, type it in and hit Enter.

    +
    • +
+
sudo sed -i 's/#DNSOverTLS=no/DNSOverTLS=yes/g' /etc/systemd/resolved.conf
+
+
    +
  • Restart the systemd-resolvd and networking services to recognize the changes to the file:
    • +
+
sudo systemctl restart systemd-resolved.service && sudo service network-manager restart
+
+

Verify Configuration

+
    +
  • Confirm that DNS over TLS is being used by opening the Terminal application and running the following command, typing in your password and pressing `Enter``:
    • +
+

$ dig +short txt proto.on.quad9.net.
+
+If the response is dot., then it is working! If the response is do53-udp., then it's still using plaintext. If there is no response, that means that Quad9 may not have been configured probably in the Network Settings.

+

Undo

+

If you experience any issues or want to undo this configuration change:

+
    +
  • Open the Terminal application, and copy/paste these commands to disable DNS over TLS. You'll be prompted for your password.
    • +
+
sudo sed -i 's/DNSOverTLS=yes/#DNSOverTLS=no/g' /etc/systemd/resolved.conf
+
+
    +
  • Restart the systemd-resolvd and networking services to recognize the changes to the file we just made:
    • +
+
sudo systemctl restart systemd-resolved.service && sudo service network-manager restart
+
+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
+ + + +
+
+
+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/MacOS/Big_Sur_and_later_(Encrypted)/index.html b/Setup_Guides/MacOS/Big_Sur_and_later_(Encrypted)/index.html new file mode 100644 index 0000000..5d8208e --- /dev/null +++ b/Setup_Guides/MacOS/Big_Sur_and_later_(Encrypted)/index.html @@ -0,0 +1,1614 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Big Sur and later (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+ + + + +

Big Sur and later (Encrypted)

+ +

Overview

+

DNS over TLS (DoT) and DNS over HTTPS (DoH) are now supported natively in MacOS Big Sur and later.

+

Please follow the steps below to install the Quad9 DNS Profile.

+
+

VPNs, iCloud Private Relay, Little Snitch

+

When using iCloud Private Relay, most VPN clients, or Little Snitch, it will not utilize/respect this DNS profile.

+
    +
  • +

    VPN: do not follow these instructions. Instead set Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN client's documentation for further information.

    +
    • +
  • +

    Apple Private Relay: do not follow these instructions. Apple private relay will use its own DNS servers at the system level, with no way to override it

    +
    • +
+
+
+

Firefox

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
+
+

Choosing DNS over TLS or DNS over HTTPS

+

DNS over TLS is recommended if the device will mainly connect to Wi-Fi networks you control, or on corporate networks where DNS over TLS is allowed.

+

DNS over HTTPS is recommended if the device will frequently connect to guest Wi-Fi, and/or networks you do not administrate, as DoH is not as commonly blocked on firewalls.

+

Before You Start

+
+

nslookup and dig

+

The App Store, as well as the dig and nslookup commands in a Terminal do not use encrypted DNS. This is by design.

+
+
+

DNS over TLS

+

If connected to a Wi-Fi network which blocks DNS over TLS, which may occur on restrictive network firewalls, you will have to disable the profile or disconnect from the network to regain DNS resolution. This solution does not allow for unencrypted "fallback" behavior. DNS over HTTPS is recommended for most users

+
+
+

This profile will expire!

+

These profiles are only valid until they expire, at which point, they will automatically disable until a new profile is installed. This is by design of Apple, and there is no way around it."

+
+

Download Profile

+

Download one of the profiles here directly using Safari on your MacOS device. You must use Safari to download the file.

+
+

Note

+

If you do not know which file to choose, we recommend DNS over HTTPS - 9.9.9.9 (DNSSEC, Threat-Blocking)

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+
    +
  • +

    9.9.9.9 (DNSSEC, Threat-Blocking)

    +
      +
    • DNS over TLS - 9.9.9.9 (Expires Jan 29, 2025)
        +
      • SHA256: 6d826edcf0e7f89c32352266896c8aacd96da8074789d1ecf01f9f60fcc63d8d
        • +
      +
      • +
    • DNS over HTTPS - 9.9.9.9 (Expires Jan 29, 2025)
        +
      • SHA256: eeabc4e42bd701e0afc74c9da706024e2df40cca38d9ae3f6be92eaa91986db1
        • +
      +
      • +
    +
    • +
  • +

    9.9.9.10 (No DNSSEC, no Threat-Blocking)

    +
      +
    • DNS over TLS - 9.9.9.10 (Expires Jan 29, 2025)
        +
      • SHA256: cde1057b6dc6f61f73963299a22e7bb2eaa17100cdc60e69896c1f132804859c
        • +
      +
      • +
    • DNS over HTTPS - 9.9.9.10 (Expires Jan 29, 2025)
        +
      • SHA256: 5dc6b70a7e6d0971a6e988c4f46423d4bdbc66f443d6d92f43c3719675304ea7
        • +
      +
      • +
    +
    • +
  • +

    9.9.9.11 (DNSSEC, Threat-Blocking, with ECS)

    +
      +
    • DNS over TLS - 9.9.9.11 (Expires Jan 29, 2025)
        +
      • SHA256: 8126f0187de219a0e9df2e2df104df1ffc0f2efa2af3e6d5c441268b3f6a020d
        • +
      +
      • +
    • DNS over HTTPS - 9.9.9.11 (Expires Jan 29, 2025)
        +
      • SHA256: 8c9ce407e7032d91252be58c65237d3014710df6622d37d7c0ed40bb80502e70
        • +
      +
      • +
    +
    • +
  • +

    9.9.9.12 (No DNSSEC, no Threat-Blocking, with ECS)

    +
      +
    • DNS over TLS - 9.9.9.12 (Expires Jan 29, 2025)
        +
      • SHA256: fe5943d6ad5dd553cf321e7be251cc6da68db1056ab6d754e581c8ab2e3adbb4
        • +
      +
      • +
    • DNS over HTTPS - 9.9.9.12 (Expires Jan 29, 2025)
        +
      • SHA256: 79cd0536250e6a1292b318a490057c17d03fd0c90768fad2f999c59b58d89345
        • +
      +
      • +
    +
    • +
+

Installation

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    +
  • Navigate to your Downloads folder and select to the profile you just downloaded.
      +
    • Open Settings > Profile Downloaded and select the Quad9 profile you opened.
        +
      • Click Install
          +
        • Enter your phone's passcode
          • +
        +
        • +
      +
      • +
    +
    • +
+
+

Note

+

You will receive a warning message warning that your network traffic may be filtered or monitored by the DNS server. While Quad9’s profile can protect your device by filtering potentially malicious traffic, none of your traffic will be logged by Quad9. Please refer to our Privacy Policy for more information

+
+
    +
  • +

    Select Install, then Install again.

    +
    • +
  • +

    The profile is now installed. Select Done

    +
    • +
+

Verify Configuration

+

To confirm the installation was successful, visit on.quad9.net

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Miscellaneous/Cloudflared_and_Quad9/index.html b/Setup_Guides/Miscellaneous/Cloudflared_and_Quad9/index.html new file mode 100644 index 0000000..eed21eb --- /dev/null +++ b/Setup_Guides/Miscellaneous/Cloudflared_and_Quad9/index.html @@ -0,0 +1,1428 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Cloudflared and Quad9 - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Cloudflared and Quad9

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Cloudflared is a DNS over HTTPS proxy that can be configured to use Quad9 for DNS resolution.

+
    +
  • In the cloudflared.yml configuration file, replace the Cloudflare IPs in the proxy-dns-upstream section with the Quad9 addresses associated with your desired features.
      +
    • Restart the cloudflared service
      • +
    +
    • +
+

Before (Cloudflare DoH Servers) +

proxy-dns-upstream:
+
+- https://1.1.1.1/dns-query
+- https://1.0.0.1/dns-query
+

+

IPv4 +

proxy-dns-upstream:
+
+- https://9.9.9.9/dns-query
+- https://149.112.112.112/dns-query
+

+

IPv6 +

proxy-dns-upstream:
+
+- https://[2620:fe::fe]/dns-query
+- https://[2620:fe::9]/dns-query
+

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Miscellaneous/Pi-Hole/index.html b/Setup_Guides/Miscellaneous/Pi-Hole/index.html new file mode 100644 index 0000000..5d8ad53 --- /dev/null +++ b/Setup_Guides/Miscellaneous/Pi-Hole/index.html @@ -0,0 +1,1518 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Pi Hole - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Pi Hole

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Overview

+

Pi-Hole is a popular DNS forwarder, often used primarily for blocking domains specifically associated with ads and tracking.

+

Pi-Hole Setup

+

For detailed setup instructions of Pi-Hole itself, please see the Official Pi-Hole Documentation.

+

Quad9 Setup

+

Once you have installed Pi-Hole and can access the administration panel, Quad9 is already one of the default options.

+
    +
  • +

    In the Admin panel, navigate to Settings -> DNS

    +
      +
    • Check both IPv4 boxes next to Quad9 (filtered, DNSSEC)
        +
      • If your network support IPv6, it's also recommended to check both IPv6 boxes. If you're not sure if IPv6 is configured on your network, you can test that here: https://test-ipv6.com/
        • +
      +
      • +
    +
    • +
  • +

    Check/Enable the options:

    +
      +
    • Never forward non-FQDNs and Never forward reverse lookups for private IP ranges to prevent sending unanswerable DNS queries to Quad9.
        +
      • Click Save at the bottom.
        • +
      +
      • +
    +
    • +
+

Verify Configuration

+

Once Quad9 has been configured in Pi-Hole, you can configure your router or a single computer to use the Pi-Hole's IP address as a DNS server. If the Query Log is enabled (Settings -> Privacy [tab]), you should see Quad9 recorded in the Status column:

+

You can also confirm if Quad9 is being used manually on Linux, MacOS, or Windows.

+

Blocked Domains

+

Domains which are blocked by Quad9 will record Blocked (external, NXRA) in the Status column of the Query Log:

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Open-Source_Routers/IPFire_(Encrypted)/index.html b/Setup_Guides/Open-Source_Routers/IPFire_(Encrypted)/index.html new file mode 100644 index 0000000..49f6c32 --- /dev/null +++ b/Setup_Guides/Open-Source_Routers/IPFire_(Encrypted)/index.html @@ -0,0 +1,1542 @@ + + + + + + + + + + + + + + + + + + + + + + + + + IPFire (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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IPFire (Encrypted)

+ +

Overview

+

IPFire is an open-source firewall and router, used in both consumer and commercial environments.

+

IPFire utilizes Unbound, which has built-in DNS over TLS support, with the configuration being accessible in the GUI.

+

This setup guide was tested using IPFire 2.27

+
+

Backup Time!

+

Before making changes to a production environment, we recommend backing up the existing configuration

+
+

Instructions

+
    +
  • +

    Navigate to System -> Domain Name System

    +
      +
    • Under DNS Servers, click Add
        +
      • Go through this process twice, one for each Quad9 IP address, where the TLS Hostname will always be dns.quad9.net
          +
        • IP address: 9.9.9.9
          • +
        • IP address: 149.112.112.112
          • +
        +
        • +
      +
      • +
    +
    • +
  • +

    Use ISP-assigned DNS Servers: Disabled

    +
    • +
  • Protocol for DNS Queries: TLS
    • +
  • Enable Safe Search: Disabled
    • +
  • QNAME Minimisation: Disabled
    • +
  • Click Save
    • +
+

Verify Configuratiom

+

GUI

+

Navigate to Status -> Net-Traffic in the top menu, and search for an active connect to either 9.9.9.9 or 149.112.112.112 via port 853 TCP

+

CLI

+
    +
  • Connect to your IPFire device via SSH
    • +
  • Install the tshark package
    • +
+
pakfire -y install tshark
+
+
    +
  • Start a packet capture with tshark to filter for DNS over TLS traffic:
    • +
+
tshark -i any 'port 853'
+
+

If the IPFire device is using DNS over HTTPS for DNS queries, you will see output like this: +

1 0.000000000 192.168.1.150 → 9.9.9.9 TCP 76 37226 → 853 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 SACK_PERM=1 TSval=3103990808 TSecr=0 WS=512
+2 0.006914259 9.9.9.9 → 192.168.1.150 TCP 76 853 → 37226 [SYN, ACK] Seq=0 Ack=1 Win=28960 Len=0 MSS=1460 TSval=2447463919 TSecr=3103990808 WS=256
+3 0.006948874 192.168.1.150 → 9.9.9.9 TCP 68 37226 → 853 [ACK] Seq=1 Ack=1 Win=64512 Len=0 TSval=3103990815 TSecr=2447463919
+4 0.007110658 192.168.1.150 → 9.9.9.9 TLSv1 387 Client Hello
+5 0.013306457 9.9.9.9 → 192.168.1.150 TCP 68 853 → 37226 [ACK] Seq=1 Ack=320 Win=30208 Len=0 TSval=2447463926 TSecr=3103990815
+6 0.013926633 9.9.9.9 → 192.168.1.150 TLSv1.3 2964 Server Hello, Change Cipher Spec, Application Data
+7 0.013945067 192.168.1.150 → 9.9.9.9 TCP 68 37226 → 853 [ACK] Seq=320 Ack=2897 Win=62464 Len=0 TSval=3103990822 TSecr=2447463926
+

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

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+ +
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+
+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Open-Source_Routers/MikroTik_RouterOS_(Encrypted)/index.html b/Setup_Guides/Open-Source_Routers/MikroTik_RouterOS_(Encrypted)/index.html new file mode 100644 index 0000000..d2666c4 --- /dev/null +++ b/Setup_Guides/Open-Source_Routers/MikroTik_RouterOS_(Encrypted)/index.html @@ -0,0 +1,1538 @@ + + + + + + + + + + + + + + + + + + + + + + + + + MikroTik RouterOS (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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MikroTik RouterOS (Encrypted)

+ +

Overview

+

This article describes how to configure your MikroTik router using RouterOS to send encrypted DNS queries to Quad9 using DNS over HTTPS.

+

RouterOS >=6.4.7 is required. These instructions were tested using RouterOS 7.1.3.

+
+

Backup Time!

+

Before making changes to a production environment, we recommend backing up the existing configuration

+
+

Instructions

+
    +
  • +

    Connect to your MikroTik router's management interface via SSH or console. The username and password will be the same as if using Webfig (GUI).

    +
    • +
  • +

    In order for MikroTik to perform certificate verification of the Quad9 DNS over HTTPS domain, we need to download and import the DigiCert Global Root CA certificate.

    +
      +
    • Download the certificate to your MikroTik router:
      • +
    +
    • +
+
/tool/fetch mode=https url="https://cacerts.digicert.com/DigiCertGlobalRootCA.crt.pem"
+
+
    +
  • Import the certificate into the local certificate store. When prompted for a passphrase, just hit enter for no passphrase:
    • +
+
/certificate/import file-name=DigiCertGlobalRootCA.crt.pem
+
+

The resulting output should be:

+
passphrase: 
+certificates-imported: 1
+private-keys-imported: 0
+files-imported: 1
+decryption-failures: 0
+keys-with-no-certificate: 0
+
+
    +
  • Log into Webfig (GUI), and navigate to IP -> DNS on the left-side menu.
    • +
  • In the Servers field, set: 9.9.9.9, 149.112.112.112, 2620:fe::fe, 2620:fe::9
    • +
+
+

Warning

+

If your network does not support IPv6, then the IPv6 addresses should not be added, as it may result in a percentage of your DNS requests failing. Not sure if you have IPv6? Test here.

+
+
    +
  • Use DoH Server: https://dns.quad9.net/dns-query
    • +
  • Verify DoH Certificate: Enabled
    • +
  • Allow Remote Requests: Enabled
    • +
+
+

Warning

+

Don't forget to configure the firewall rules to prevent non-local IP address from using this as a DNS server.

+
+
    +
  1. Click Apply at the top.
    2. +
+

Verify Configuration

+

To confirm that the MikroTik router is sending DNS queries to Quad9 using DNS over HTTPS, you can use the packet sniffer tool to filter for packets being sent to/from Quad9 IP addresses using port 443 (HTTPS):

+
tool/sniffer/quick port=443 ip-address=9.9.9.9,149.112.112.112
+
+

If DNS queries sent to the MikroTik router are being forwarded to Quad9 using DNS over HTTPS, you will see any output.

+
Columns: INTERFACE, TIME, NUM, DIR, SRC-MAC, DST-MAC, SRC-ADDRESS, DST-ADDRESS, PROTOCOL, SIZE, CPU
+INTERFACE TIME NUM DIR SRC-MAC DST-MAC SRC-ADDRESS DST-ADDRESS PROTOCOL SIZE CPU
+ether1 6.886 5 <- 04:F0:21:45:C9:0C 08:00:27:7D:3B:33 9.9.9.9:443 (https) 192.168.1.222:59348 ip:tcp 66 0
+ether1 6.887 6 <- 04:F0:21:45:C9:0C 08:00:27:7D:3B:33 9.9.9.9:443 (https) 192.168.1.222:59348 ip:tcp 1514 0
+ether1 6.887 7 -> 08:00:27:7D:3B:33 04:F0:21:45:C9:0C 192.168.1.222:59348 9.9.9.9:443 (https) ip:tcp 66 0
+ether1 6.887 8 <- 04:F0:21:45:C9:0C 08:00:27:7D:3B:33 9.9.9.9:443 (https) 192.168.1.222:59348 ip:tcp 1514 0
+ether1 6.887 9 -> 08:00:27:7D:3B:33 04:F0:21:45:C9:0C 192.168.1.222:59348 9.9.9.9:443 (https) ip:tcp 66 0
+
+

If you do not yet have endpoints using the MikroTik router for DNS, you can manually query the MikroTik router to facilitate testing and checking for the output generated above from Terminal (Linux/macOS) or Command Prompt (Windows), replacing 192.168.1.1 with the LAN IP address of your MikroTik router.

+
nslookup quad9.net 192.168.1.1
+
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Get Support

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OPNsense (Encrypted)

+ +

Overview

+

OPNsense is an open-source firewall, used in both consumer and commercial environments.

+

OPNsense utilizes Unbound, which has built-in DNS over TLS support, with the configuration being accessible in the GUI.

+
+

Backup Time!

+

Before making changes to a production environment, we recommend backing up the existing configuration

+
+

Instructions

+
    +
  • Navigate to Services -> Unbound DNS -> DNS over TLS on the left-side menu
      +
    • Click the + button
        +
      • Add 4 entries, using dns.quad9.net in the Verify CN Field, and 853 in the Server Port: field.
        • +
      +
      • +
    +
    • +
+

Server IP: 9.9.9.9 +Server IP: 149.112.112.112 +Server IP: 2620:fe::fe +Server IP: 2620:fe::9

+
+

IPv6

+

If your network does not have IPv6, which you can test here, then IPv6 addresses should not be added, as it may result in a percentage of your DNS requests failing.

+
+
    +
  • +

    Click Apply to save the changes.

    +
    • +
  • +

    Navigate to System -> Settings -> General on the left-side menu.

    +
    • +
  • +

    Disable Allow DNS server list to be overridden by DHCP/PPP on WAN

    +
    • +
  • Click Save
    • +
  • Click Apply at the top of the page
    • +
+

Verify Configuration

+

To confirm that OPNsense is now sending your queries via DNS over TLS, you can run a packet capture in command line, such as:

+
tcpdump -i em0 'port 853'
+
+
+

Note

+

You may have to adjust the interface name from em0 to that of your device's WAN interface.

+
+

You can also test from a macOS, Linux, or Windows system that is connected to this OPNsense router/firewall.

+

Get Support

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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Open-Source_Routers/OpenWrt_LuCi/index.html b/Setup_Guides/Open-Source_Routers/OpenWrt_LuCi/index.html new file mode 100644 index 0000000..ca86d79 --- /dev/null +++ b/Setup_Guides/Open-Source_Routers/OpenWrt_LuCi/index.html @@ -0,0 +1,1494 @@ + + + + + + + + + + + + + + + + + + + + + + + + + OpenWrt LuCi - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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OpenWrt LuCi

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Overview

+

The OpenWrt Project is a Linux operating system targeting embedded devices, which is often used as an open-source solution for routers and firewalls.

+

This guide covers setting Quad9 in the DNS forwarder settings. When using your OpenWrt router as a DNS server, it will forward DNS requests to Quad9.

+
+

Backup Time!

+

Before making changes to a production environment, we recommend backing up the existing configuration

+
+

Instructions

+
    +
  • +

    Log into your LuCI control panel, typically by opening http://192.168.1.1 in your browser.

    +
    • +
  • +

    Navigate to Network -> DHCP and DNS

    +
      +
    • Set 9.9.9.9 and 149.112.112.112, or the addresses of your preferred Quad9 service in the "DNS forwardings" input fields.
      • +
    +
    • +
  • +

    If your network supports IPv6, you can also add 2620:fe::fe and 2620:fe::9, or the IPv6 addresses of your preferred Quad9 service.

    +
    • +
  • +

    Navigate to Resolv and Hosts Files sub-tab, and make sure Ignore resolv file is Enabled.

    +
    • +
  • +

    Click Save & Apply at the bottom. Since you are not changing the DHCP settings, the change should be instantaneous .

    +
    • +
+

Verify Configuration

+
    +
  • Confirm you're using Quad9 on Linux, MacOS, or Windows.
    • +
+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Open-Source_Routers/pfSense_(Encrypted)/index.html b/Setup_Guides/Open-Source_Routers/pfSense_(Encrypted)/index.html new file mode 100644 index 0000000..e4414bd --- /dev/null +++ b/Setup_Guides/Open-Source_Routers/pfSense_(Encrypted)/index.html @@ -0,0 +1,1505 @@ + + + + + + + + + + + + + + + + + + + + + + + + + pfSense (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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pfSense (Encrypted)

+ +

Overview

+

pfSense is an open-source firewall and router, used in both consumer and commercial environments.

+

pfSense has documentation for DNS over TLS, which we recommend reviewing in addition to this article.

+

pfSense utilizes Unbound, which has built-in DNS over TLS support, with the configuration being accessible in the GUI.

+
+

Backup Time!

+

Before making changes to a production environment, we recommend backing up the existing configuration

+
+

Instructions

+

Navigate to System -> Generate Setup on the top menu.

+
    +
  • Click Add DNS Server until there are 4 rows of entries available.
    • +
  • Add the Quad9 IPv4 and IPv6 addresses on the left fields: +9.9.9.9,149.112.112.112,2620:fe::fe,2620:fe::9
    • +
+
+

Warning

+

If your network does not have IPv6, which you can test here, then IPv6 addresses should not be added, as it may result in a percentage of your DNS requests failing.

+
+
    +
  • Add dns.quad9.net on all the Hostname fields on the right.
    • +
+

Click "Save" at the bottom of the screen.

+

Navigate to Services -> DNS Forwarder on the top menu. +* Make sure Enable DNS forwarder is disabled. If it is enabled, disable it, and click Save at the bottom of the page.

+

Navigate to Services -> DNS Resolver on the top menu.

+
    +
  • Scroll down until you find the section seen in the following screenshot.
    • +
  • Disable Enable DNSSEC Support if enabled.
    • +
+
+

DNSSEC

+

DNSSEC is already enforced by Quad9, and enabling DNSSEC at the forwarder level can cause false DNSSEC failures.

+
+
    +
  • Enable DNS Query Forwarding
    • +
  • Enable Use SSL/TLS for outgoing DNS queries to Forwarding Servers
    • +
  • Click Save at the bottom of the screen.
    • +
  • Click Apply Changes near the top of the screen to apply the saved changes.
    • +
+

Veryify Configuration

+

You can confirm that pfSense is now sending your queries via DNS over TLS using the built-in Packet Capture Tool.

+

You can also run a test from a macOS, Linux, or Windows system on the network.

+

Get Support

+ + + + + + + + + + + + + + + + +
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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Windows/Windows_10/index.html b/Setup_Guides/Windows/Windows_10/index.html new file mode 100644 index 0000000..18aa6d3 --- /dev/null +++ b/Setup_Guides/Windows/Windows_10/index.html @@ -0,0 +1,1545 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Windows 10 - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Windows 10

+ +

Overview

+

The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on an individual Windows device, please follow the steps below to configure Windows 10 to use Quad9.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+

IPv4

+
    +
  • +

    Right click on the Network icon (Wired or WiFi) in the system tray and click Open Network & Internet Settings.

    +
    • +
  • +

    Click Change adapter options

    +
    • +
  • +

    Select Properties.

    +
    • +
  • +

    Select Internet Protocol Version 4 (TCP/IPv4). Then, click Properties.

    +
    • +
  • +

    Select Use the following DNS server addresses.

    +
      +
    • Enter: 9.9.9.9 in Preferred DNS Server
      • +
    • Enter: 149.112.112.112 in Alternate DNS Server.
      • +
    +
    • +
  • Click OK.
    • +
+

IPv6

+

If your networks supports IPv6, it's also recommended to configure the Quad9 IPv6 addresses. If you're not sure if IPv6 is configured on your network, you can test that here: https://test-ipv6.com/

+
    +
  • +

    Select Internet Protocol Version 6 (TCP/IPv6)

    +
      +
    • Click Properties.
      • +
    +
    • +
  • +

    Select Use the following DNS server addresses.

    +
      +
    • Enter: 2620:fe::fe in Preferred DNS Server
      • +
    • Enter: 2620:fe::9 in Alternate DNS Server.
        +
      • Click OK.
        • +
      +
      • +
    +
    • +
  • +

    Close all configuration windows.

    +
    • +
+

Verify Configuration

+

Confirm you're using Quad9 by visiting on.quad9.net in your preferred browser.

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/Windows/Windows_11_(Encrypted)/index.html b/Setup_Guides/Windows/Windows_11_(Encrypted)/index.html new file mode 100644 index 0000000..0b2e6cb --- /dev/null +++ b/Setup_Guides/Windows/Windows_11_(Encrypted)/index.html @@ -0,0 +1,1545 @@ + + + + + + + + + + + + + + + + + + + + + + + + + Windows 11 (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Windows 11 (Encrypted)

+ +

Overview

+

The easiest way to set Quad9 on your entire network is via your router settings. If you'd prefer to set Quad9 on an individual Windows device, please follow the steps below to configure Windows 11 to use Quad9.

+
+

Firefox, VPNs

+
    +
  • Firefox is set to use Cloudflare DNS by default in some regions. If you're using Firefox, check that this is disabled.
    • +
  • VPNs typically do not respect the system or router-level DNS settings. If you're using a VPN, configure Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN provider's documentation for further information.
    • +
+
+

Instructions

+

IPv4

+
    +
  • +

    Right click the Network or WiFi icon on the system tray, and left click Network and Internet Settings

    +
    • +
  • +

    Select Ethernet or WiFi, depending on your connection type.

    +
    • +
  • +

    Scroll down and click Edit next to DNS server assignment

    +
    • +
  • +

    Make the following changes:

    +
      +
    • Change Automatic (DHCP) to Manual
      • +
    • Toggle the On switch to change the DNS server
      • +
    • Enter into Preferred DNS: 9.9.9.9
        +
      • Set Preferred DNS encryption to Encrypted Only (DNS over HTTPS)
        • +
      +
      • +
    • Enter into Alternate DNS: 149.112.112.112
        +
      • Set Alternate DNS encryption to Encrypted Only (DNS over HTTPS)
        • +
      +
      • +
    +
    • +
+
+

Note

+

If using a laptop that roams to other networks which may block DNS over HTTPS, consider choosing Encryption preferred, unencrypted allowed instead of Encrypted Only.

+
+
    +
  • Click Save
    • +
+

IPv6

+

If using IPv6, which you can confirm here, you should also scroll down and set up Quad9 on IPv6. +Note: if Windows is not configured with an IPv6 address, setting up an IPv6 DNS server could cause DNS resolution to fail.

+

Verify Configuration

+
    +
  • Open the Terminal application, and execute this command:
    • +
+
Resolve-DnsName -Type txt proto.on.quad9.net.
+
+

The output should show doh. (DNS over HTTPS) in the NameHost section if you set Quad9 in the Network Settings and enabled encryption.

+
Name                           Type   TTL   Section    NameHost
+----                           ----   ---   -------    --------
+proto.on.quad9.net             CNAME  60    Answer     doh
+
+

Questions? Issues? Didn't work? Contact us!

+

Get Support

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+ + + + + + + + + + \ No newline at end of file diff --git a/Setup_Guides/iOS/iOS_14_and_later_(Encrypted)/index.html b/Setup_Guides/iOS/iOS_14_and_later_(Encrypted)/index.html new file mode 100644 index 0000000..2c78853 --- /dev/null +++ b/Setup_Guides/iOS/iOS_14_and_later_(Encrypted)/index.html @@ -0,0 +1,1603 @@ + + + + + + + + + + + + + + + + + + + + + + + iOS 14 and later (Encrypted) - Quad9 Documentation + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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iOS 14 and later (Encrypted)

+ +

Overview

+

Please follow the steps below to install the Quad9 DNS Profile. Requires iOS 14 or later.

+
+

VPNs, iCloud Private Relay, Little Snitch

+

When using iCloud Private Relay, most VPN clients, or Little Snitch, it will not utilize/respect this DNS profile.

+
    +
  • +

    VPN: do not follow these instructions. Instead set Quad9's IP addresses in the Custom DNS settings of your VPN client. Refer to your VPN client's documentation for further information.

    +
    • +
  • +

    Apple Private Relay: do not follow these instructions. Apple private relay will use its own DNS servers at the system level, with no way to override it.

    +
    • +
+
+

TLS vs HTTPS

+

DNS over HTTPS is recommended for most users. If the device will frequently connect to guest Wi-Fi and/or networks you do not administrate. HTTPS has a minuscule chance of being blocked on firewalls.

+

DNS over TLS is recommended only if the device will mainly connect to Wi-Fi networks you control, or on corporate networks where DNS over TLS is allowed. TLS has a higher chance of being blocked on firewalls.

+

Before You Start

+
+

nslookup and dig

+

The App Store, as well as the dig and nslookup commands in a Terminal do not use encrypted DNS. This is by design.

+
+
+

DNS over TLS

+

If connected to a Wi-Fi network which blocks DNS over TLS, which may occur on restrictive network firewalls, you will have to disable the profile or disconnect from the network to regain DNS resolution. This solution does not allow for unencrypted "fallback" behavior. DNS over HTTPS is recommended for most users.

+
+
+

Profiles expire on January 29th, 2025!

+

These profiles are only valid until they expire, at which point, they will automatically disable until a new profile is installed. This is by design of Apple, and there is no way around it.

+

Remind yourself to download a new version a few days before they expire by adding a calendar event:

+

Add Calendar Event (.ics)

+
+

Download Profile

+

Download one of the profiles here directly using Safari on your iOS device. This will not work if downloaded with a different browser.

+
    +
  • +

    9.9.9.9 (DNSSEC, Threat-Blocking)

    +
      +
    • Recommended: HTTPS (.9)
        +
      • SHA256: eeabc4e42bd701e0afc74c9da706024e2df40cca38d9ae3f6be92eaa91986db1
        • +
      +
      • +
    • TLS (.9)
        +
      • SHA256: 6d826edcf0e7f89c32352266896c8aacd96da8074789d1ecf01f9f60fcc63d8d
        • +
      +
      • +
    +
    • +
  • +

    9.9.9.10 (No DNSSEC, no Threat-Blocking)

    +
      +
    • HTTPS (.10)
        +
      • SHA256: 5dc6b70a7e6d0971a6e988c4f46423d4bdbc66f443d6d92f43c3719675304ea7
        • +
      +
      • +
    • TLS (.10)
        +
      • SHA256: cde1057b6dc6f61f73963299a22e7bb2eaa17100cdc60e69896c1f132804859c
        • +
      +
      • +
    +
    • +
  • +

    9.9.9.11 (DNSSEC, Threat-Blocking, with ECS)

    +
      +
    • HTTPS (.11)
        +
      • SHA256: 8c9ce407e7032d91252be58c65237d3014710df6622d37d7c0ed40bb80502e70
        • +
      +
      • +
    • TLS (.11)
        +
      • SHA256: 8126f0187de219a0e9df2e2df104df1ffc0f2efa2af3e6d5c441268b3f6a020d
        • +
      +
      • +
    +
    • +
  • +

    9.9.9.12 (No DNSSEC, no Threat-Blocking, with ECS)

    +
      +
    • HTTPS (.12)
        +
      • SHA256: 79cd0536250e6a1292b318a490057c17d03fd0c90768fad2f999c59b58d89345
        • +
      +
      • +
    • TLS (.12)
        +
      • SHA256: fe5943d6ad5dd553cf321e7be251cc6da68db1056ab6d754e581c8ab2e3adbb4
        • +
      +
      • +
    +
    • +
+

Installation

+
    +
  • Navigate to your Downloads folder and select to the profile you just downloaded.
      +
    • Open Settings > Profile Downloaded and select the Quad9 profile you opened.
        +
      • Click Install.
          +
        • Enter your phone's passcode.
          • +
        +
        • +
      +
      • +
    +
    • +
+
+

Note

+

You will receive a warning message warning that your network traffic may be filtered or monitored by the DNS server. While Quad9’s profile can protect your device by filtering potentially malicious traffic, none of your traffic will be logged by Quad9. Please refer to our Privacy Policy for more information.

+
+
    +
  • +

    Select Install, then Install again.

    +
    • +
  • +

    The profile is now installed. Select Done.

    +
    • +
+

Verify Configuration

+

To confirm the installation was successful, visit on.quad9.net

+

Questions? Issues? Didn't work? Contact us!

+

Get Support

+ + + + + + + + + + + + + + + + +
+
+ + + +
+ +
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+ + + + + + + + + + \ No newline at end of file diff --git a/assets/conf/freebsd/forward.conf b/assets/conf/freebsd/forward.conf new file mode 100644 index 0000000..2afb362 --- /dev/null +++ b/assets/conf/freebsd/forward.conf @@ -0,0 +1,32 @@ +# This file was generated by local-unbound-setup. +# Modifications will be overwritten. +forward-zone: + name: "." + forward-tls-upstream: yes # Use DNS-over-TLS + forward-first: no # do NOT send direct +###IPv4 +# 9.9.9.9 - Threat-blocking with DNSSEC + forward-addr: 9.9.9.9@853#dns.quad9.net + forward-addr: 149.112.112.112@853#dns.quad9.net + +# 9.9.9.11 - Threat blocking, DNSSEC, and ECS +# forward-addr: 9.9.9.11@853#dns11.quad9.net +# forward-addr: 149.112.112.11@853#dns11.quad9.net + +# 9.9.9.10 - No threat blocking, no DNSSEC +# forward-addr: 9.9.9.10@853#dns10.quad9.net +# forward-addr: 149.112.112.10@853#dns10.quad9.net + + +###IPv6 - Uncomment if your system is configured for IPv6. +# 9.9.9.9 - Threat-blocking with DNSSEC +# forward-addr: 2620:fe::fe@853#dns.quad9.net +# forward-addr: 2620:fe::9@853#dns.quad9.net + +# 9.9.9.11 - Threat blocking, DNSSEC, and ECS +# forward-addr: 2620:fe::11@853#dns11.quad9.net +# forward-addr: 2620:fe::fe:11@853#dns11.quad9.net + +# 9.9.9.10 - No threat blocking, no DNSSEC +# forward-addr: 2620:fe::10@853#dns10.quad9.net +# forward-addr: 2620:fe::fe:10@853#dns10.quad9.net diff --git a/assets/conf/freebsd/unbound.conf b/assets/conf/freebsd/unbound.conf new file mode 100644 index 0000000..f80b1c1 --- /dev/null +++ b/assets/conf/freebsd/unbound.conf @@ -0,0 +1,14 @@ +# This file was generated by local-unbound-setup. +# Modifications will be overwritten. +server: + username: unbound + directory: /var/unbound + chroot: /var/unbound + pidfile: /var/run/local_unbound.pid + #auto-trust-anchor-file: /var/unbound/root.key + tls-cert-bundle: /etc/ssl/cert.pem + +include: /var/unbound/forward.conf +include: /var/unbound/lan-zones.conf +include: /var/unbound/control.conf +include: /var/unbound/conf.d/*.conf diff --git a/assets/conf/mobileconfig/Quad9_Secured_DNS_over_HTTPS_ECS_20240201.mobileconfig b/assets/conf/mobileconfig/Quad9_Secured_DNS_over_HTTPS_ECS_20240201.mobileconfig new file mode 100644 index 0000000..394f2d2 Binary files /dev/null and b/assets/conf/mobileconfig/Quad9_Secured_DNS_over_HTTPS_ECS_20240201.mobileconfig differ diff --git a/assets/conf/openbsd/unbound.conf b/assets/conf/openbsd/unbound.conf new file mode 100644 index 0000000..5131208 --- /dev/null +++ b/assets/conf/openbsd/unbound.conf @@ -0,0 +1,87 @@ +# $OpenBSD: unbound.conf,v 1.21 2020/10/28 11:35:58 sthen Exp $ +# Modified by Quad9.net: +# - Disable DNSSEC Validation. Quad9 already performs DNSSEC validation, and DNSSEC validation on a forwarder significantly decreases performance due to duplicate DNSSEC validation and can occassionally result in a false BOGUS result. +# - DNS-over-TLS enabled. +# - Pre-populate all Quad9 services + +server: + interface: 127.0.0.1 + #interface: 127.0.0.1@5353 # listen on alternative port + interface: ::1 + #do-ip6: no + + # override the default "any" address to send queries; if multiple + # addresses are available, they are used randomly to counter spoofing + #outgoing-interface: 192.0.2.1 + #outgoing-interface: 2001:db8::53 + + access-control: 0.0.0.0/0 refuse + access-control: 127.0.0.0/8 allow + access-control: ::0/0 refuse + access-control: ::1 allow + + hide-identity: yes + hide-version: yes + + # Perform DNSSEC validation. + # + #auto-trust-anchor-file: "/var/unbound/db/root.key" + #val-log-level: 2 + + # Synthesize NXDOMAINs from DNSSEC NSEC chains. + # https://tools.ietf.org/html/rfc8198 + # + # aggressive-nsec: yes + + # Serve zones authoritatively from Unbound to resolver clients. + # Not for external service. + # + #local-zone: "local." static + #local-data: "mycomputer.local. IN A 192.0.2.51" + #local-zone: "2.0.192.in-addr.arpa." static + #local-data-ptr: "192.0.2.51 mycomputer.local" + + # Use TCP for "forward-zone" requests. Useful if you are making + # DNS requests over an SSH port forwarding. + # + #tcp-upstream: yes + + # CA Certificates used for forward-tls-upstream (RFC7858) hostname + # verification. Since it's outside the chroot it is only loaded at + # startup and thus cannot be changed via a reload. + tls-cert-bundle: "/etc/ssl/cert.pem" + +remote-control: + control-enable: yes + control-interface: /var/run/unbound.sock + +forward-zone: + name: "." + forward-tls-upstream: yes # Use DNS-over-TLS + forward-first: no # do NOT send direct +###IPv4 +# 9.9.9.9 - Threat-blocking with DNSSEC + forward-addr: 9.9.9.9@853#dns.quad9.net + forward-addr: 149.112.112.112@853#dns.quad9.net + +# 9.9.9.11 - Threat blocking, DNSSEC, and ECS +# forward-addr: 9.9.9.11@853#dns11.quad9.net +# forward-addr: 149.112.112.11@853#dns11.quad9.net + +# 9.9.9.10 - No threat blocking, no DNSSEC +# forward-addr: 9.9.9.10@853#dns10.quad9.net +# forward-addr: 149.112.112.10@853#dns10.quad9.net + + +###IPv6 - Uncomment if your system is configured for IPv6. +# 9.9.9.9 - Threat-blocking with DNSSEC +# forward-addr: 2620:fe::fe@853#dns.quad9.net +# forward-addr: 2620:fe::9@853#dns.quad9.net + +# 9.9.9.11 - Threat blocking, DNSSEC, and ECS +# forward-addr: 2620:fe::11@853#dns11.quad9.net +# forward-addr: 2620:fe::fe:11@853#dns11.quad9.net + +# 9.9.9.10 - No threat blocking, no DNSSEC +# forward-addr: 2620:fe::10@853#dns10.quad9.net +# forward-addr: 2620:fe::fe:10@853#dns10.quad9.net diff --git a/assets/images/favicon.png b/assets/images/favicon.png new file mode 100644 index 0000000..1cf13b9 Binary files /dev/null and b/assets/images/favicon.png differ diff --git a/assets/images/social/en/FAQs.png b/assets/images/social/en/FAQs.png new file mode 100644 index 0000000..3b6619d Binary files /dev/null and b/assets/images/social/en/FAQs.png differ diff --git a/assets/images/social/en/Quad9_For_Organizations/DNS_Forwarder_Best_Practices.png b/assets/images/social/en/Quad9_For_Organizations/DNS_Forwarder_Best_Practices.png new file mode 100644 index 0000000..b2b1b05 Binary files /dev/null and b/assets/images/social/en/Quad9_For_Organizations/DNS_Forwarder_Best_Practices.png differ diff --git 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i.subscribe({next({offset:a}){o.style.setProperty("--md-tooltip-x",`${a.x}px`),o.style.setProperty("--md-tooltip-y",`${a.y}px`)},complete(){o.style.removeProperty("--md-tooltip-x"),o.style.removeProperty("--md-tooltip-y")}}),S(i.pipe(b(({active:a})=>a)),i.pipe(_e(250),b(({active:a})=>!a))).subscribe({next({active:a}){a?(e.insertAdjacentElement("afterend",o),e.setAttribute("aria-describedby",r),e.removeAttribute("title")):(o.remove(),e.removeAttribute("aria-describedby"),e.setAttribute("title",t))},complete(){o.remove(),e.removeAttribute("aria-describedby"),e.setAttribute("title",t)}}),i.pipe(Le(16,me)).subscribe(({active:a})=>{o.classList.toggle("md-tooltip--active",a)}),i.pipe(ct(125,me),b(()=>!!e.offsetParent),m(()=>e.offsetParent.getBoundingClientRect()),m(({x:a})=>a)).subscribe({next(a){a?o.style.setProperty("--md-tooltip-0",`${-a}px`):o.style.removeProperty("--md-tooltip-0")},complete(){o.style.removeProperty("--md-tooltip-0")}}),Qa(o,e).pipe(E(a=>i.next(a)),L(()=>i.complete()),m(a=>R({ref:e},a)))}).pipe(Qe(se))}function Ka({viewport$:e}){if(!B("header.autohide"))return I(!1);let t=e.pipe(m(({offset:{y:n}})=>n),Ye(2,1),m(([n,i])=>[nMath.abs(i-n.y)>100),m(([,[n]])=>n),K()),o=Ve("search");return z([e,o]).pipe(m(([{offset:n},i])=>n.y>400&&!i),K(),v(n=>n?r:I(!1)),Q(!1))}function Nn(e,t){return C(()=>z([ge(e),Ka(t)])).pipe(m(([{height:r},o])=>({height:r,hidden:o})),K((r,o)=>r.height===o.height&&r.hidden===o.hidden),G(1))}function zn(e,{header$:t,main$:r}){return C(()=>{let o=new g,n=o.pipe(X(),ne(!0));o.pipe(Z("active"),We(t)).subscribe(([{active:a},{hidden:s}])=>{e.classList.toggle("md-header--shadow",a&&!s),e.hidden=s});let i=ue($("[title]",e)).pipe(b(()=>B("content.tooltips")),oe(a=>Vn(a)));return r.subscribe(o),t.pipe(U(n),m(a=>R({ref:e},a)),Pe(i.pipe(U(n))))})}function Ya(e,{viewport$:t,header$:r}){return mr(e,{viewport$:t,header$:r}).pipe(m(({offset:{y:o}})=>{let{height:n}=ce(e);return{active:o>=n}}),Z("active"))}function qn(e,t){return C(()=>{let r=new g;r.subscribe({next({active:n}){e.classList.toggle("md-header__title--active",n)},complete(){e.classList.remove("md-header__title--active")}});let o=fe(".md-content h1");return typeof o=="undefined"?O:Ya(o,t).pipe(E(n=>r.next(n)),L(()=>r.complete()),m(n=>R({ref:e},n)))})}function Qn(e,{viewport$:t,header$:r}){let o=r.pipe(m(({height:i})=>i),K()),n=o.pipe(v(()=>ge(e).pipe(m(({height:i})=>({top:e.offsetTop,bottom:e.offsetTop+i})),Z("bottom"))));return z([o,n,t]).pipe(m(([i,{top:a,bottom:s},{offset:{y:p},size:{height:c}}])=>(c=Math.max(0,c-Math.max(0,a-p,i)-Math.max(0,c+p-s)),{offset:a-i,height:c,active:a-i<=p})),K((i,a)=>i.offset===a.offset&&i.height===a.height&&i.active===a.active))}function Ba(e){let t=__md_get("__palette")||{index:e.findIndex(o=>matchMedia(o.getAttribute("data-md-color-media")).matches)},r=Math.max(0,Math.min(t.index,e.length-1));return I(...e).pipe(oe(o=>d(o,"change").pipe(m(()=>o))),Q(e[r]),m(o=>({index:e.indexOf(o),color:{media:o.getAttribute("data-md-color-media"),scheme:o.getAttribute("data-md-color-scheme"),primary:o.getAttribute("data-md-color-primary"),accent:o.getAttribute("data-md-color-accent")}})),G(1))}function Kn(e){let t=$("input",e),r=x("meta",{name:"theme-color"});document.head.appendChild(r);let o=x("meta",{name:"color-scheme"});document.head.appendChild(o);let n=$t("(prefers-color-scheme: light)");return C(()=>{let i=new g;return i.subscribe(a=>{if(document.body.setAttribute("data-md-color-switching",""),a.color.media==="(prefers-color-scheme)"){let s=matchMedia("(prefers-color-scheme: light)"),p=document.querySelector(s.matches?"[data-md-color-media='(prefers-color-scheme: light)']":"[data-md-color-media='(prefers-color-scheme: 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Gr=Vt(Yr());function Ga(e){e.setAttribute("data-md-copying","");let t=e.closest("[data-copy]"),r=t?t.getAttribute("data-copy"):e.innerText;return e.removeAttribute("data-md-copying"),r.trimEnd()}function Bn({alert$:e}){Gr.default.isSupported()&&new F(t=>{new Gr.default("[data-clipboard-target], [data-clipboard-text]",{text:r=>r.getAttribute("data-clipboard-text")||Ga(P(r.getAttribute("data-clipboard-target")))}).on("success",r=>t.next(r))}).pipe(E(t=>{t.trigger.focus()}),m(()=>Ee("clipboard.copied"))).subscribe(e)}function Gn(e,t){return e.protocol=t.protocol,e.hostname=t.hostname,e}function Ja(e,t){let r=new Map;for(let o of $("url",e)){let n=P("loc",o),i=[Gn(new URL(n.textContent),t)];r.set(`${i[0]}`,i);for(let a of $("[rel=alternate]",o)){let s=a.getAttribute("href");s!=null&&i.push(Gn(new URL(s),t))}}return r}function ur(e){return mn(new URL("sitemap.xml",e)).pipe(m(t=>Ja(t,new URL(e))),ve(()=>I(new Map)))}function Xa(e,t){if(!(e.target instanceof Element))return O;let 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g,o=r.pipe(X(),ne(!0));z([t.pipe(Ae(It)),r],(i,a)=>a).pipe(Z("value")).subscribe(({value:i})=>t.next({type:2,data:i})),r.pipe(Z("focus")).subscribe(({focus:i})=>{i&&Je("search",i)}),d(e.form,"reset").pipe(U(o)).subscribe(()=>e.focus());let n=P("header [for=__search]");return d(n,"click").subscribe(()=>e.focus()),ns(e,{worker$:t}).pipe(E(i=>r.next(i)),L(()=>r.complete()),m(i=>R({ref:e},i)),G(1))}function si(e,{worker$:t,query$:r}){let o=new g,n=tn(e.parentElement).pipe(b(Boolean)),i=e.parentElement,a=P(":scope > :first-child",e),s=P(":scope > :last-child",e);Ve("search").subscribe(l=>s.setAttribute("role",l?"list":"presentation")),o.pipe(ee(r),Ur(t.pipe(Ae(It)))).subscribe(([{items:l},{value:f}])=>{switch(l.length){case 0:a.textContent=f.length?Ee("search.result.none"):Ee("search.result.placeholder");break;case 1:a.textContent=Ee("search.result.one");break;default:let u=sr(l.length);a.textContent=Ee("search.result.other",u)}});let p=o.pipe(E(()=>s.innerHTML=""),v(({items:l})=>S(I(...l.slice(0,10)),I(...l.slice(10)).pipe(Ye(4),Vr(n),v(([f])=>f)))),m(Tn),pe());return p.subscribe(l=>s.appendChild(l)),p.pipe(oe(l=>{let f=fe("details",l);return typeof f=="undefined"?O:d(f,"toggle").pipe(U(o),m(()=>f))})).subscribe(l=>{l.open===!1&&l.offsetTop<=i.scrollTop&&i.scrollTo({top:l.offsetTop})}),t.pipe(b(dr),m(({data:l})=>l)).pipe(E(l=>o.next(l)),L(()=>o.complete()),m(l=>R({ref:e},l)))}function is(e,{query$:t}){return t.pipe(m(({value:r})=>{let o=xe();return o.hash="",r=r.replace(/\s+/g,"+").replace(/&/g,"%26").replace(/=/g,"%3D"),o.search=`q=${r}`,{url:o}}))}function ci(e,t){let r=new g,o=r.pipe(X(),ne(!0));return r.subscribe(({url:n})=>{e.setAttribute("data-clipboard-text",e.href),e.href=`${n}`}),d(e,"click").pipe(U(o)).subscribe(n=>n.preventDefault()),is(e,t).pipe(E(n=>r.next(n)),L(()=>r.complete()),m(n=>R({ref:e},n)))}function pi(e,{worker$:t,keyboard$:r}){let o=new g,n=Se("search-query"),i=S(d(n,"keydown"),d(n,"focus")).pipe(be(se),m(()=>n.value),K());return o.pipe(We(i),m(([{suggest:s},p])=>{let c=p.split(/([\s-]+)/);if(s!=null&&s.length&&c[c.length-1]){let l=s[s.length-1];l.startsWith(c[c.length-1])&&(c[c.length-1]=l)}else c.length=0;return c})).subscribe(s=>e.innerHTML=s.join("").replace(/\s/g," ")),r.pipe(b(({mode:s})=>s==="search")).subscribe(s=>{switch(s.type){case"ArrowRight":e.innerText.length&&n.selectionStart===n.value.length&&(n.value=e.innerText);break}}),t.pipe(b(dr),m(({data:s})=>s)).pipe(E(s=>o.next(s)),L(()=>o.complete()),m(()=>({ref:e})))}function li(e,{index$:t,keyboard$:r}){let o=ye();try{let n=ni(o.search,t),i=Se("search-query",e),a=Se("search-result",e);d(e,"click").pipe(b(({target:p})=>p instanceof Element&&!!p.closest("a"))).subscribe(()=>Je("search",!1)),r.pipe(b(({mode:p})=>p==="search")).subscribe(p=>{let c=Re();switch(p.type){case"Enter":if(c===i){let l=new Map;for(let f of $(":first-child [href]",a)){let 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z([t,r.pipe(Q(xe()),b(o=>!!o.searchParams.get("h")))]).pipe(m(([o,n])=>oi(o.config)(n.searchParams.get("h"))),m(o=>{var a;let n=new Map,i=document.createNodeIterator(e,NodeFilter.SHOW_TEXT);for(let s=i.nextNode();s;s=i.nextNode())if((a=s.parentElement)!=null&&a.offsetHeight){let p=s.textContent,c=o(p);c.length>p.length&&n.set(s,c)}for(let[s,p]of n){let{childNodes:c}=x("span",null,p);s.replaceWith(...Array.from(c))}return{ref:e,nodes:n}}))}function as(e,{viewport$:t,main$:r}){let o=e.closest(".md-grid"),n=o.offsetTop-o.parentElement.offsetTop;return z([r,t]).pipe(m(([{offset:i,height:a},{offset:{y:s}}])=>(a=a+Math.min(n,Math.max(0,s-i))-n,{height:a,locked:s>=i+n})),K((i,a)=>i.height===a.height&&i.locked===a.locked))}function Jr(e,o){var n=o,{header$:t}=n,r=io(n,["header$"]);let i=P(".md-sidebar__scrollwrap",e),{y:a}=Ue(i);return C(()=>{let s=new g,p=s.pipe(X(),ne(!0)),c=s.pipe(Le(0,me));return c.pipe(ee(t)).subscribe({next([{height:l},{height:f}]){i.style.height=`${l-2*a}px`,e.style.top=`${f}px`},complete(){i.style.height="",e.style.top=""}}),c.pipe(Ae()).subscribe(()=>{for(let l of $(".md-nav__link--active[href]",e)){if(!l.clientHeight)continue;let f=l.closest(".md-sidebar__scrollwrap");if(typeof f!="undefined"){let u=l.offsetTop-f.offsetTop,{height:h}=ce(f);f.scrollTo({top:u-h/2})}}}),ue($("label[tabindex]",e)).pipe(oe(l=>d(l,"click").pipe(be(se),m(()=>l),U(p)))).subscribe(l=>{let f=P(`[id="${l.htmlFor}"]`);P(`[aria-labelledby="${l.id}"]`).setAttribute("aria-expanded",`${f.checked}`)}),as(e,r).pipe(E(l=>s.next(l)),L(()=>s.complete()),m(l=>R({ref:e},l)))})}function fi(e,t){if(typeof t!="undefined"){let r=`https://api.github.com/repos/${e}/${t}`;return Ct(Ne(`${r}/releases/latest`).pipe(ve(()=>O),m(o=>({version:o.tag_name})),Be({})),Ne(r).pipe(ve(()=>O),m(o=>({stars:o.stargazers_count,forks:o.forks_count})),Be({}))).pipe(m(([o,n])=>R(R({},o),n)))}else{let r=`https://api.github.com/users/${e}`;return Ne(r).pipe(m(o=>({repositories:o.public_repos})),Be({}))}}function ui(e,t){let r=`https://${e}/api/v4/projects/${encodeURIComponent(t)}`;return Ne(r).pipe(ve(()=>O),m(({star_count:o,forks_count:n})=>({stars:o,forks:n})),Be({}))}function di(e){let t=e.match(/^.+github\.com\/([^/]+)\/?([^/]+)?/i);if(t){let[,r,o]=t;return fi(r,o)}if(t=e.match(/^.+?([^/]*gitlab[^/]+)\/(.+?)\/?$/i),t){let[,r,o]=t;return ui(r,o)}return O}var ss;function cs(e){return ss||(ss=C(()=>{let t=__md_get("__source",sessionStorage);if(t)return I(t);if(ae("consent").length){let o=__md_get("__consent");if(!(o&&o.github))return O}return di(e.href).pipe(E(o=>__md_set("__source",o,sessionStorage)))}).pipe(ve(()=>O),b(t=>Object.keys(t).length>0),m(t=>({facts:t})),G(1)))}function hi(e){let t=P(":scope > :last-child",e);return C(()=>{let r=new g;return 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rt=Nn(Se("header"),{viewport$:Oe}),Ft=ot.pipe(m(()=>Se("main")),v(e=>Qn(e,{viewport$:Oe,header$:rt})),G(1)),ds=S(...ae("consent").map(e=>xn(e,{target$:Ot})),...ae("dialog").map(e=>Dn(e,{alert$:eo})),...ae("header").map(e=>zn(e,{viewport$:Oe,header$:rt,main$:Ft})),...ae("palette").map(e=>Kn(e)),...ae("progress").map(e=>Yn(e,{progress$:to})),...ae("search").map(e=>li(e,{index$:Mi,keyboard$:Zr})),...ae("source").map(e=>hi(e))),hs=C(()=>S(...ae("announce").map(e=>gn(e)),...ae("content").map(e=>Un(e,{viewport$:Oe,target$:Ot,print$:Oi})),...ae("content").map(e=>B("search.highlight")?mi(e,{index$:Mi,location$:jt}):O),...ae("header-title").map(e=>qn(e,{viewport$:Oe,header$:rt})),...ae("sidebar").map(e=>e.getAttribute("data-md-type")==="navigation"?Nr(Si,()=>Jr(e,{viewport$:Oe,header$:rt,main$:Ft})):Nr(hr,()=>Jr(e,{viewport$:Oe,header$:rt,main$:Ft}))),...ae("tabs").map(e=>bi(e,{viewport$:Oe,header$:rt})),...ae("toc").map(e=>vi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Ot})),...ae("top").map(e=>gi(e,{viewport$:Oe,header$:rt,main$:Ft,target$:Ot})))),Li=ot.pipe(v(()=>hs),Pe(ds),G(1));Li.subscribe();window.document$=ot;window.location$=jt;window.target$=Ot;window.keyboard$=Zr;window.viewport$=Oe;window.tablet$=hr;window.screen$=Si;window.print$=Oi;window.alert$=eo;window.progress$=to;window.component$=Li;})(); 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"sourcesContent": ["(function (global, factory) {\n typeof exports === 'object' && typeof module !== 'undefined' ? factory() :\n typeof define === 'function' && define.amd ? define(factory) :\n (factory());\n}(this, (function () { 'use strict';\n\n /**\n * Applies the :focus-visible polyfill at the given scope.\n * A scope in this case is either the top-level Document or a Shadow Root.\n *\n * @param {(Document|ShadowRoot)} scope\n * @see https://github.com/WICG/focus-visible\n */\n function applyFocusVisiblePolyfill(scope) {\n var hadKeyboardEvent = true;\n var hadFocusVisibleRecently = false;\n var hadFocusVisibleRecentlyTimeout = null;\n\n var inputTypesAllowlist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n };\n\n /**\n * Helper function for legacy browsers and iframes which sometimes focus\n * elements like document, body, and non-interactive SVG.\n * @param {Element} el\n */\n function isValidFocusTarget(el) {\n if (\n el &&\n el !== document &&\n el.nodeName !== 'HTML' &&\n el.nodeName !== 'BODY' &&\n 'classList' in el &&\n 'contains' in el.classList\n ) {\n return true;\n }\n return false;\n }\n\n /**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} el\n * @return {boolean}\n */\n function focusTriggersKeyboardModality(el) {\n var type = el.type;\n var tagName = el.tagName;\n\n if (tagName === 'INPUT' && inputTypesAllowlist[type] && !el.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !el.readOnly) {\n return true;\n }\n\n if (el.isContentEditable) {\n return true;\n }\n\n return false;\n }\n\n /**\n * Add the `focus-visible` class to the given element if it was not added by\n * the author.\n * @param {Element} el\n */\n function addFocusVisibleClass(el) {\n if (el.classList.contains('focus-visible')) {\n return;\n }\n el.classList.add('focus-visible');\n el.setAttribute('data-focus-visible-added', '');\n }\n\n /**\n * Remove the `focus-visible` class from the given element if it was not\n * originally added by the author.\n * @param {Element} el\n */\n function removeFocusVisibleClass(el) {\n if (!el.hasAttribute('data-focus-visible-added')) {\n return;\n }\n el.classList.remove('focus-visible');\n el.removeAttribute('data-focus-visible-added');\n }\n\n /**\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "/*!\n * clipboard.js v2.0.11\n * https://clipboardjs.com/\n *\n * Licensed MIT \u00A9 Zeno Rocha\n */\n(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"ClipboardJS\"] = factory();\n\telse\n\t\troot[\"ClipboardJS\"] = factory();\n})(this, function() {\nreturn /******/ (function() { // webpackBootstrap\n/******/ \tvar __webpack_modules__ = ({\n\n/***/ 686:\n/***/ (function(__unused_webpack_module, __webpack_exports__, __webpack_require__) {\n\n\"use strict\";\n\n// EXPORTS\n__webpack_require__.d(__webpack_exports__, {\n \"default\": function() { return /* binding */ clipboard; }\n});\n\n// EXTERNAL MODULE: ./node_modules/tiny-emitter/index.js\nvar tiny_emitter = __webpack_require__(279);\nvar tiny_emitter_default = /*#__PURE__*/__webpack_require__.n(tiny_emitter);\n// EXTERNAL MODULE: ./node_modules/good-listener/src/listen.js\nvar listen = __webpack_require__(370);\nvar listen_default = /*#__PURE__*/__webpack_require__.n(listen);\n// EXTERNAL MODULE: ./node_modules/select/src/select.js\nvar src_select = __webpack_require__(817);\nvar select_default = /*#__PURE__*/__webpack_require__.n(src_select);\n;// CONCATENATED MODULE: ./src/common/command.js\n/**\n * Executes a given operation type.\n * @param {String} type\n * @return {Boolean}\n */\nfunction command(type) {\n try {\n return document.execCommand(type);\n } catch (err) {\n return false;\n }\n}\n;// CONCATENATED MODULE: ./src/actions/cut.js\n\n\n/**\n * Cut action wrapper.\n * @param {String|HTMLElement} target\n * @return {String}\n */\n\nvar ClipboardActionCut = function ClipboardActionCut(target) {\n var selectedText = select_default()(target);\n command('cut');\n return selectedText;\n};\n\n/* harmony default export */ var actions_cut = (ClipboardActionCut);\n;// CONCATENATED MODULE: ./src/common/create-fake-element.js\n/**\n * Creates a fake textarea element with a value.\n * @param {String} value\n * @return {HTMLElement}\n */\nfunction createFakeElement(value) {\n var isRTL = document.documentElement.getAttribute('dir') === 'rtl';\n var fakeElement = document.createElement('textarea'); // Prevent zooming on iOS\n\n fakeElement.style.fontSize = '12pt'; // Reset box model\n\n fakeElement.style.border = '0';\n fakeElement.style.padding = '0';\n fakeElement.style.margin = '0'; // Move element out of screen horizontally\n\n fakeElement.style.position = 'absolute';\n fakeElement.style[isRTL ? 'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Create fake copy action wrapper using a fake element.\n * @param {String} target\n * @param {Object} options\n * @return {String}\n */\n\nvar fakeCopyAction = function fakeCopyAction(value, options) {\n var fakeElement = createFakeElement(value);\n options.container.appendChild(fakeElement);\n var selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n return selectedText;\n};\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n selectedText = fakeCopyAction(target, options);\n } else if (target instanceof HTMLInputElement && !['text', 'search', 'url', 'tel', 'password'].includes(target === null || target === void 0 ? void 0 : target.type)) {\n // If input type doesn't support `setSelectionRange`. Simulate it. https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/setSelectionRange\n selectedText = fakeCopyAction(target.value, options);\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*\n * Copyright (c) 2016-2024 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"focus-visible\"\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getActiveElement,\n getOptionalElement,\n requestJSON,\n setLocation,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchScript,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountAnnounce,\n mountBackToTop,\n mountConsent,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountProgress,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantNavigation,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchEllipsis,\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Functions - @todo refactor\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch search index\n *\n * @returns Search index observable\n */\nfunction fetchSearchIndex(): Observable {\n if (location.protocol === \"file:\") {\n return watchScript(\n `${new URL(\"search/search_index.js\", config.base)}`\n )\n .pipe(\n // @ts-ignore - @todo fix typings\n map(() => __index),\n shareReplay(1)\n )\n } else {\n return requestJSON(\n new URL(\"search/search_index.json\", config.base)\n )\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget(location$)\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? fetchSearchIndex()\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject()\nsetupClipboardJS({ alert$ })\n\n/* Set up progress indicator */\nconst progress$ = new Subject()\n\n/* Set up instant navigation, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantNavigation({ location$, viewport$, progress$ })\n .subscribe(document$)\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement(\"link[rel=prev]\")\n if (typeof prev !== \"undefined\")\n setLocation(prev)\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement(\"link[rel=next]\")\n if (typeof next !== \"undefined\")\n setLocation(next)\n break\n\n /* Expand navigation, see https://bit.ly/3ZjG5io */\n case \"Enter\":\n const active = getActiveElement()\n if (active instanceof HTMLLabelElement)\n active.click()\n }\n })\n\n/* Set up patches */\npatchEllipsis({ viewport$, document$ })\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Consent */\n ...getComponentElements(\"consent\")\n .map(el => mountConsent(el, { target$ })),\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Progress bar */\n ...getComponentElements(\"progress\")\n .map(el => mountProgress(el, { progress$ })),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Announcement bar */\n ...getComponentElements(\"announce\")\n .map(el => mountAnnounce(el)),\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { viewport$, target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, {\n viewport$, header$, main$, target$\n })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.progress$ = progress$ /* Progress indicator subject */\nwindow.component$ = component$ /* Component observable */\n", "/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global Reflect, Promise */\r\n\r\nvar extendStatics = function(d, b) {\r\n extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n return extendStatics(d, b);\r\n};\r\n\r\nexport function __extends(d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());\r\n}\r\n\r\nexport var __assign = function() {\r\n __assign = Object.assign || function __assign(t) {\r\n for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n s = arguments[i];\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n }\r\n return t;\r\n }\r\n return __assign.apply(this, arguments);\r\n}\r\n\r\nexport function __rest(s, e) {\r\n var t = {};\r\n for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)\r\n t[p] = s[p];\r\n if (s != null && typeof Object.getOwnPropertySymbols === \"function\")\r\n for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {\r\n if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))\r\n t[p[i]] = s[p[i]];\r\n }\r\n return t;\r\n}\r\n\r\nexport function __decorate(decorators, target, key, desc) {\r\n var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;\r\n if (typeof Reflect === \"object\" && typeof Reflect.decorate === \"function\") r = Reflect.decorate(decorators, target, key, desc);\r\n else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;\r\n return c > 3 && r && Object.defineProperty(target, key, r), r;\r\n}\r\n\r\nexport function __param(paramIndex, decorator) {\r\n return function (target, key) { decorator(target, key, paramIndex); }\r\n}\r\n\r\nexport function __metadata(metadataKey, metadataValue) {\r\n if (typeof Reflect === \"object\" && typeof Reflect.metadata === \"function\") return Reflect.metadata(metadataKey, metadataValue);\r\n}\r\n\r\nexport function __awaiter(thisArg, _arguments, P, generator) {\r\n function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }\r\n return new (P || (P = Promise))(function (resolve, reject) {\r\n function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }\r\n function rejected(value) { try { step(generator[\"throw\"](value)); } catch (e) { reject(e); } }\r\n function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }\r\n step((generator = generator.apply(thisArg, _arguments || [])).next());\r\n });\r\n}\r\n\r\nexport function __generator(thisArg, body) {\r\n var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;\r\n return g = { next: verb(0), \"throw\": verb(1), \"return\": verb(2) }, typeof Symbol === \"function\" && (g[Symbol.iterator] = function() { return this; }), g;\r\n function verb(n) { return function (v) { return step([n, v]); }; }\r\n function step(op) {\r\n if (f) throw new TypeError(\"Generator is already executing.\");\r\n while (_) try {\r\n if (f = 1, y && (t = op[0] & 2 ? y[\"return\"] : op[0] ? y[\"throw\"] || ((t = y[\"return\"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;\r\n if (y = 0, t) op = [op[0] & 2, t.value];\r\n switch (op[0]) {\r\n case 0: case 1: t = op; break;\r\n case 4: _.label++; return { value: op[1], done: false };\r\n case 5: _.label++; y = op[1]; op = [0]; continue;\r\n case 7: op = _.ops.pop(); _.trys.pop(); continue;\r\n default:\r\n if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }\r\n if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }\r\n if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }\r\n if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }\r\n if (t[2]) _.ops.pop();\r\n _.trys.pop(); continue;\r\n }\r\n op = body.call(thisArg, _);\r\n } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }\r\n if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };\r\n }\r\n}\r\n\r\nexport var __createBinding = Object.create ? (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });\r\n}) : (function(o, m, k, k2) {\r\n if (k2 === undefined) k2 = k;\r\n o[k2] = m[k];\r\n});\r\n\r\nexport function __exportStar(m, o) {\r\n for (var p in m) if (p !== \"default\" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);\r\n}\r\n\r\nexport function __values(o) {\r\n var s = typeof Symbol === \"function\" && Symbol.iterator, m = s && o[s], i = 0;\r\n if (m) return m.call(o);\r\n if (o && typeof o.length === \"number\") return {\r\n next: function () {\r\n if (o && i >= o.length) o = void 0;\r\n return { value: o && o[i++], done: !o };\r\n }\r\n };\r\n throw new TypeError(s ? \"Object is not iterable.\" : \"Symbol.iterator is not defined.\");\r\n}\r\n\r\nexport function __read(o, n) {\r\n var m = typeof Symbol === \"function\" && o[Symbol.iterator];\r\n if (!m) return o;\r\n var i = m.call(o), r, ar = [], e;\r\n try {\r\n while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);\r\n }\r\n catch (error) { e = { error: error }; }\r\n finally {\r\n try {\r\n if (r && !r.done && (m = i[\"return\"])) m.call(i);\r\n }\r\n finally { if (e) throw e.error; }\r\n }\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spread() {\r\n for (var ar = [], i = 0; i < arguments.length; i++)\r\n ar = ar.concat(__read(arguments[i]));\r\n return ar;\r\n}\r\n\r\n/** @deprecated */\r\nexport function __spreadArrays() {\r\n for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;\r\n for (var r = Array(s), k = 0, i = 0; i < il; i++)\r\n for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)\r\n r[k] = a[j];\r\n return r;\r\n}\r\n\r\nexport function __spreadArray(to, from, pack) {\r\n if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {\r\n if (ar || !(i in from)) {\r\n if (!ar) ar = Array.prototype.slice.call(from, 0, i);\r\n ar[i] = from[i];\r\n }\r\n }\r\n return to.concat(ar || Array.prototype.slice.call(from));\r\n}\r\n\r\nexport function __await(v) {\r\n return this instanceof __await ? (this.v = v, this) : new __await(v);\r\n}\r\n\r\nexport function __asyncGenerator(thisArg, _arguments, generator) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var g = generator.apply(thisArg, _arguments || []), i, q = [];\r\n return i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i;\r\n function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }\r\n function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }\r\n function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }\r\n function fulfill(value) { resume(\"next\", value); }\r\n function reject(value) { resume(\"throw\", value); }\r\n function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }\r\n}\r\n\r\nexport function __asyncDelegator(o) {\r\n var i, p;\r\n return i = {}, verb(\"next\"), verb(\"throw\", function (e) { throw e; }), verb(\"return\"), i[Symbol.iterator] = function () { return this; }, i;\r\n function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === \"return\" } : f ? f(v) : v; } : f; }\r\n}\r\n\r\nexport function __asyncValues(o) {\r\n if (!Symbol.asyncIterator) throw new TypeError(\"Symbol.asyncIterator is not defined.\");\r\n var m = o[Symbol.asyncIterator], i;\r\n return m ? m.call(o) : (o = typeof __values === \"function\" ? __values(o) : o[Symbol.iterator](), i = {}, verb(\"next\"), verb(\"throw\"), verb(\"return\"), i[Symbol.asyncIterator] = function () { return this; }, i);\r\n function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }\r\n function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }\r\n}\r\n\r\nexport function __makeTemplateObject(cooked, raw) {\r\n if (Object.defineProperty) { Object.defineProperty(cooked, \"raw\", { value: raw }); } else { cooked.raw = raw; }\r\n return cooked;\r\n};\r\n\r\nvar __setModuleDefault = Object.create ? (function(o, v) {\r\n Object.defineProperty(o, \"default\", { enumerable: true, value: v });\r\n}) : function(o, v) {\r\n o[\"default\"] = v;\r\n};\r\n\r\nexport function __importStar(mod) {\r\n if (mod && mod.__esModule) return mod;\r\n var result = {};\r\n if (mod != null) for (var k in mod) if (k !== \"default\" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);\r\n __setModuleDefault(result, mod);\r\n return result;\r\n}\r\n\r\nexport function __importDefault(mod) {\r\n return (mod && mod.__esModule) ? mod : { default: mod };\r\n}\r\n\r\nexport function __classPrivateFieldGet(receiver, state, kind, f) {\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a getter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot read private member from an object whose class did not declare it\");\r\n return kind === \"m\" ? f : kind === \"a\" ? f.call(receiver) : f ? f.value : state.get(receiver);\r\n}\r\n\r\nexport function __classPrivateFieldSet(receiver, state, value, kind, f) {\r\n if (kind === \"m\") throw new TypeError(\"Private method is not writable\");\r\n if (kind === \"a\" && !f) throw new TypeError(\"Private accessor was defined without a setter\");\r\n if (typeof state === \"function\" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError(\"Cannot write private member to an object whose class did not declare it\");\r\n return (kind === \"a\" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;\r\n}\r\n", "/**\n * Returns true if the object is a function.\n * @param value The value to check\n */\nexport function isFunction(value: any): value is (...args: any[]) => any {\n return typeof value === 'function';\n}\n", "/**\n * Used to create Error subclasses until the community moves away from ES5.\n *\n * This is because compiling from TypeScript down to ES5 has issues with subclassing Errors\n * as well as other built-in types: https://github.com/Microsoft/TypeScript/issues/12123\n *\n * @param createImpl A factory function to create the actual constructor implementation. The returned\n * function should be a named function that calls `_super` internally.\n */\nexport function createErrorClass(createImpl: (_super: any) => any): T {\n const _super = (instance: any) => {\n Error.call(instance);\n instance.stack = new Error().stack;\n };\n\n const ctorFunc = createImpl(_super);\n ctorFunc.prototype = Object.create(Error.prototype);\n ctorFunc.prototype.constructor = ctorFunc;\n return ctorFunc;\n}\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface UnsubscriptionError extends Error {\n readonly errors: any[];\n}\n\nexport interface UnsubscriptionErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (errors: any[]): UnsubscriptionError;\n}\n\n/**\n * An error thrown when one or more errors have occurred during the\n * `unsubscribe` of a {@link Subscription}.\n */\nexport const UnsubscriptionError: UnsubscriptionErrorCtor = createErrorClass(\n (_super) =>\n function UnsubscriptionErrorImpl(this: any, errors: (Error | string)[]) {\n _super(this);\n this.message = errors\n ? `${errors.length} errors occurred during unsubscription:\n${errors.map((err, i) => `${i + 1}) ${err.toString()}`).join('\\n ')}`\n : '';\n this.name = 'UnsubscriptionError';\n this.errors = errors;\n }\n);\n", "/**\n * Removes an item from an array, mutating it.\n * @param arr The array to remove the item from\n * @param item The item to remove\n */\nexport function arrRemove(arr: T[] | undefined | null, item: T) {\n if (arr) {\n const index = arr.indexOf(item);\n 0 <= index && arr.splice(index, 1);\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { UnsubscriptionError } from './util/UnsubscriptionError';\nimport { SubscriptionLike, TeardownLogic, Unsubscribable } from './types';\nimport { arrRemove } from './util/arrRemove';\n\n/**\n * Represents a disposable resource, such as the execution of an Observable. A\n * Subscription has one important method, `unsubscribe`, that takes no argument\n * and just disposes the resource held by the subscription.\n *\n * Additionally, subscriptions may be grouped together through the `add()`\n * method, which will attach a child Subscription to the current Subscription.\n * When a Subscription is unsubscribed, all its children (and its grandchildren)\n * will be unsubscribed as well.\n *\n * @class Subscription\n */\nexport class Subscription implements SubscriptionLike {\n /** @nocollapse */\n public static EMPTY = (() => {\n const empty = new Subscription();\n empty.closed = true;\n return empty;\n })();\n\n /**\n * A flag to indicate whether this Subscription has already been unsubscribed.\n */\n public closed = false;\n\n private _parentage: Subscription[] | Subscription | null = null;\n\n /**\n * The list of registered finalizers to execute upon unsubscription. Adding and removing from this\n * list occurs in the {@link #add} and {@link #remove} methods.\n */\n private _finalizers: Exclude[] | null = null;\n\n /**\n * @param initialTeardown A function executed first as part of the finalization\n * process that is kicked off when {@link #unsubscribe} is called.\n */\n constructor(private initialTeardown?: () => void) {}\n\n /**\n * Disposes the resources held by the subscription. May, for instance, cancel\n * an ongoing Observable execution or cancel any other type of work that\n * started when the Subscription was created.\n * @return {void}\n */\n unsubscribe(): void {\n let errors: any[] | undefined;\n\n if (!this.closed) {\n this.closed = true;\n\n // Remove this from it's parents.\n const { _parentage } = this;\n if (_parentage) {\n this._parentage = null;\n if (Array.isArray(_parentage)) {\n for (const parent of _parentage) {\n parent.remove(this);\n }\n } else {\n _parentage.remove(this);\n }\n }\n\n const { initialTeardown: initialFinalizer } = this;\n if (isFunction(initialFinalizer)) {\n try {\n initialFinalizer();\n } catch (e) {\n errors = e instanceof UnsubscriptionError ? e.errors : [e];\n }\n }\n\n const { _finalizers } = this;\n if (_finalizers) {\n this._finalizers = null;\n for (const finalizer of _finalizers) {\n try {\n execFinalizer(finalizer);\n } catch (err) {\n errors = errors ?? [];\n if (err instanceof UnsubscriptionError) {\n errors = [...errors, ...err.errors];\n } else {\n errors.push(err);\n }\n }\n }\n }\n\n if (errors) {\n throw new UnsubscriptionError(errors);\n }\n }\n }\n\n /**\n * Adds a finalizer to this subscription, so that finalization will be unsubscribed/called\n * when this subscription is unsubscribed. If this subscription is already {@link #closed},\n * because it has already been unsubscribed, then whatever finalizer is passed to it\n * will automatically be executed (unless the finalizer itself is also a closed subscription).\n *\n * Closed Subscriptions cannot be added as finalizers to any subscription. Adding a closed\n * subscription to a any subscription will result in no operation. (A noop).\n *\n * Adding a subscription to itself, or adding `null` or `undefined` will not perform any\n * operation at all. (A noop).\n *\n * `Subscription` instances that are added to this instance will automatically remove themselves\n * if they are unsubscribed. Functions and {@link Unsubscribable} objects that you wish to remove\n * will need to be removed manually with {@link #remove}\n *\n * @param teardown The finalization logic to add to this subscription.\n */\n add(teardown: TeardownLogic): void {\n // Only add the finalizer if it's not undefined\n // and don't add a subscription to itself.\n if (teardown && teardown !== this) {\n if (this.closed) {\n // If this subscription is already closed,\n // execute whatever finalizer is handed to it automatically.\n execFinalizer(teardown);\n } else {\n if (teardown instanceof Subscription) {\n // We don't add closed subscriptions, and we don't add the same subscription\n // twice. Subscription unsubscribe is idempotent.\n if (teardown.closed || teardown._hasParent(this)) {\n return;\n }\n teardown._addParent(this);\n }\n (this._finalizers = this._finalizers ?? []).push(teardown);\n }\n }\n }\n\n /**\n * Checks to see if a this subscription already has a particular parent.\n * This will signal that this subscription has already been added to the parent in question.\n * @param parent the parent to check for\n */\n private _hasParent(parent: Subscription) {\n const { _parentage } = this;\n return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));\n }\n\n /**\n * Adds a parent to this subscription so it can be removed from the parent if it\n * unsubscribes on it's own.\n *\n * NOTE: THIS ASSUMES THAT {@link _hasParent} HAS ALREADY BEEN CHECKED.\n * @param parent The parent subscription to add\n */\n private _addParent(parent: Subscription) {\n const { _parentage } = this;\n this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;\n }\n\n /**\n * Called on a child when it is removed via {@link #remove}.\n * @param parent The parent to remove\n */\n private _removeParent(parent: Subscription) {\n const { _parentage } = this;\n if (_parentage === parent) {\n this._parentage = null;\n } else if (Array.isArray(_parentage)) {\n arrRemove(_parentage, parent);\n }\n }\n\n /**\n * Removes a finalizer from this subscription that was previously added with the {@link #add} method.\n *\n * Note that `Subscription` instances, when unsubscribed, will automatically remove themselves\n * from every other `Subscription` they have been added to. This means that using the `remove` method\n * is not a common thing and should be used thoughtfully.\n *\n * If you add the same finalizer instance of a function or an unsubscribable object to a `Subscription` instance\n * more than once, you will need to call `remove` the same number of times to remove all instances.\n *\n * All finalizer instances are removed to free up memory upon unsubscription.\n *\n * @param teardown The finalizer to remove from this subscription\n */\n remove(teardown: Exclude): void {\n const { _finalizers } = this;\n _finalizers && arrRemove(_finalizers, teardown);\n\n if (teardown instanceof Subscription) {\n teardown._removeParent(this);\n }\n }\n}\n\nexport const EMPTY_SUBSCRIPTION = Subscription.EMPTY;\n\nexport function isSubscription(value: any): value is Subscription {\n return (\n value instanceof Subscription ||\n (value && 'closed' in value && isFunction(value.remove) && isFunction(value.add) && isFunction(value.unsubscribe))\n );\n}\n\nfunction execFinalizer(finalizer: Unsubscribable | (() => void)) {\n if (isFunction(finalizer)) {\n finalizer();\n } else {\n finalizer.unsubscribe();\n }\n}\n", "import { Subscriber } from './Subscriber';\nimport { ObservableNotification } from './types';\n\n/**\n * The {@link GlobalConfig} object for RxJS. It is used to configure things\n * like how to react on unhandled errors.\n */\nexport const config: GlobalConfig = {\n onUnhandledError: null,\n onStoppedNotification: null,\n Promise: undefined,\n useDeprecatedSynchronousErrorHandling: false,\n useDeprecatedNextContext: false,\n};\n\n/**\n * The global configuration object for RxJS, used to configure things\n * like how to react on unhandled errors. Accessible via {@link config}\n * object.\n */\nexport interface GlobalConfig {\n /**\n * A registration point for unhandled errors from RxJS. These are errors that\n * cannot were not handled by consuming code in the usual subscription path. For\n * example, if you have this configured, and you subscribe to an observable without\n * providing an error handler, errors from that subscription will end up here. This\n * will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onUnhandledError: ((err: any) => void) | null;\n\n /**\n * A registration point for notifications that cannot be sent to subscribers because they\n * have completed, errored or have been explicitly unsubscribed. By default, next, complete\n * and error notifications sent to stopped subscribers are noops. However, sometimes callers\n * might want a different behavior. For example, with sources that attempt to report errors\n * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.\n * This will _always_ be called asynchronously on another job in the runtime. This is because\n * we do not want errors thrown in this user-configured handler to interfere with the\n * behavior of the library.\n */\n onStoppedNotification: ((notification: ObservableNotification, subscriber: Subscriber) => void) | null;\n\n /**\n * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}\n * methods.\n *\n * @deprecated As of version 8, RxJS will no longer support this sort of injection of a\n * Promise constructor. If you need a Promise implementation other than native promises,\n * please polyfill/patch Promise as you see appropriate. Will be removed in v8.\n */\n Promise?: PromiseConstructorLike;\n\n /**\n * If true, turns on synchronous error rethrowing, which is a deprecated behavior\n * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe\n * call in a try/catch block. It also enables producer interference, a nasty bug\n * where a multicast can be broken for all observers by a downstream consumer with\n * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME\n * FOR MIGRATION REASONS.\n *\n * @deprecated As of version 8, RxJS will no longer support synchronous throwing\n * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad\n * behaviors described above. Will be removed in v8.\n */\n useDeprecatedSynchronousErrorHandling: boolean;\n\n /**\n * If true, enables an as-of-yet undocumented feature from v5: The ability to access\n * `unsubscribe()` via `this` context in `next` functions created in observers passed\n * to `subscribe`.\n *\n * This is being removed because the performance was severely problematic, and it could also cause\n * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have\n * their `this` context overwritten.\n *\n * @deprecated As of version 8, RxJS will no longer support altering the\n * context of next functions provided as part of an observer to Subscribe. Instead,\n * you will have access to a subscription or a signal or token that will allow you to do things like\n * unsubscribe and test closed status. Will be removed in v8.\n */\n useDeprecatedNextContext: boolean;\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetTimeoutFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearTimeoutFunction = (handle: TimerHandle) => void;\n\ninterface TimeoutProvider {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n delegate:\n | {\n setTimeout: SetTimeoutFunction;\n clearTimeout: ClearTimeoutFunction;\n }\n | undefined;\n}\n\nexport const timeoutProvider: TimeoutProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setTimeout(handler: () => void, timeout?: number, ...args) {\n const { delegate } = timeoutProvider;\n if (delegate?.setTimeout) {\n return delegate.setTimeout(handler, timeout, ...args);\n }\n return setTimeout(handler, timeout, ...args);\n },\n clearTimeout(handle) {\n const { delegate } = timeoutProvider;\n return (delegate?.clearTimeout || clearTimeout)(handle as any);\n },\n delegate: undefined,\n};\n", "import { config } from '../config';\nimport { timeoutProvider } from '../scheduler/timeoutProvider';\n\n/**\n * Handles an error on another job either with the user-configured {@link onUnhandledError},\n * or by throwing it on that new job so it can be picked up by `window.onerror`, `process.on('error')`, etc.\n *\n * This should be called whenever there is an error that is out-of-band with the subscription\n * or when an error hits a terminal boundary of the subscription and no error handler was provided.\n *\n * @param err the error to report\n */\nexport function reportUnhandledError(err: any) {\n timeoutProvider.setTimeout(() => {\n const { onUnhandledError } = config;\n if (onUnhandledError) {\n // Execute the user-configured error handler.\n onUnhandledError(err);\n } else {\n // Throw so it is picked up by the runtime's uncaught error mechanism.\n throw err;\n }\n });\n}\n", "/* tslint:disable:no-empty */\nexport function noop() { }\n", "import { CompleteNotification, NextNotification, ErrorNotification } from './types';\n\n/**\n * A completion object optimized for memory use and created to be the\n * same \"shape\" as other notifications in v8.\n * @internal\n */\nexport const COMPLETE_NOTIFICATION = (() => createNotification('C', undefined, undefined) as CompleteNotification)();\n\n/**\n * Internal use only. Creates an optimized error notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function errorNotification(error: any): ErrorNotification {\n return createNotification('E', undefined, error) as any;\n}\n\n/**\n * Internal use only. Creates an optimized next notification that is the same \"shape\"\n * as other notifications.\n * @internal\n */\nexport function nextNotification(value: T) {\n return createNotification('N', value, undefined) as NextNotification;\n}\n\n/**\n * Ensures that all notifications created internally have the same \"shape\" in v8.\n *\n * TODO: This is only exported to support a crazy legacy test in `groupBy`.\n * @internal\n */\nexport function createNotification(kind: 'N' | 'E' | 'C', value: any, error: any) {\n return {\n kind,\n value,\n error,\n };\n}\n", "import { config } from '../config';\n\nlet context: { errorThrown: boolean; error: any } | null = null;\n\n/**\n * Handles dealing with errors for super-gross mode. Creates a context, in which\n * any synchronously thrown errors will be passed to {@link captureError}. Which\n * will record the error such that it will be rethrown after the call back is complete.\n * TODO: Remove in v8\n * @param cb An immediately executed function.\n */\nexport function errorContext(cb: () => void) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n const isRoot = !context;\n if (isRoot) {\n context = { errorThrown: false, error: null };\n }\n cb();\n if (isRoot) {\n const { errorThrown, error } = context!;\n context = null;\n if (errorThrown) {\n throw error;\n }\n }\n } else {\n // This is the general non-deprecated path for everyone that\n // isn't crazy enough to use super-gross mode (useDeprecatedSynchronousErrorHandling)\n cb();\n }\n}\n\n/**\n * Captures errors only in super-gross mode.\n * @param err the error to capture\n */\nexport function captureError(err: any) {\n if (config.useDeprecatedSynchronousErrorHandling && context) {\n context.errorThrown = true;\n context.error = err;\n }\n}\n", "import { isFunction } from './util/isFunction';\nimport { Observer, ObservableNotification } from './types';\nimport { isSubscription, Subscription } from './Subscription';\nimport { config } from './config';\nimport { reportUnhandledError } from './util/reportUnhandledError';\nimport { noop } from './util/noop';\nimport { nextNotification, errorNotification, COMPLETE_NOTIFICATION } from './NotificationFactories';\nimport { timeoutProvider } from './scheduler/timeoutProvider';\nimport { captureError } from './util/errorContext';\n\n/**\n * Implements the {@link Observer} interface and extends the\n * {@link Subscription} class. While the {@link Observer} is the public API for\n * consuming the values of an {@link Observable}, all Observers get converted to\n * a Subscriber, in order to provide Subscription-like capabilities such as\n * `unsubscribe`. Subscriber is a common type in RxJS, and crucial for\n * implementing operators, but it is rarely used as a public API.\n *\n * @class Subscriber\n */\nexport class Subscriber extends Subscription implements Observer {\n /**\n * A static factory for a Subscriber, given a (potentially partial) definition\n * of an Observer.\n * @param next The `next` callback of an Observer.\n * @param error The `error` callback of an\n * Observer.\n * @param complete The `complete` callback of an\n * Observer.\n * @return A Subscriber wrapping the (partially defined)\n * Observer represented by the given arguments.\n * @nocollapse\n * @deprecated Do not use. Will be removed in v8. There is no replacement for this\n * method, and there is no reason to be creating instances of `Subscriber` directly.\n * If you have a specific use case, please file an issue.\n */\n static create(next?: (x?: T) => void, error?: (e?: any) => void, complete?: () => void): Subscriber {\n return new SafeSubscriber(next, error, complete);\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected isStopped: boolean = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n protected destination: Subscriber | Observer; // this `any` is the escape hatch to erase extra type param (e.g. R)\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * There is no reason to directly create an instance of Subscriber. This type is exported for typings reasons.\n */\n constructor(destination?: Subscriber | Observer) {\n super();\n if (destination) {\n this.destination = destination;\n // Automatically chain subscriptions together here.\n // if destination is a Subscription, then it is a Subscriber.\n if (isSubscription(destination)) {\n destination.add(this);\n }\n } else {\n this.destination = EMPTY_OBSERVER;\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `next` from\n * the Observable, with a value. The Observable may call this method 0 or more\n * times.\n * @param {T} [value] The `next` value.\n * @return {void}\n */\n next(value?: T): void {\n if (this.isStopped) {\n handleStoppedNotification(nextNotification(value), this);\n } else {\n this._next(value!);\n }\n }\n\n /**\n * The {@link Observer} callback to receive notifications of type `error` from\n * the Observable, with an attached `Error`. Notifies the Observer that\n * the Observable has experienced an error condition.\n * @param {any} [err] The `error` exception.\n * @return {void}\n */\n error(err?: any): void {\n if (this.isStopped) {\n handleStoppedNotification(errorNotification(err), this);\n } else {\n this.isStopped = true;\n this._error(err);\n }\n }\n\n /**\n * The {@link Observer} callback to receive a valueless notification of type\n * `complete` from the Observable. Notifies the Observer that the Observable\n * has finished sending push-based notifications.\n * @return {void}\n */\n complete(): void {\n if (this.isStopped) {\n handleStoppedNotification(COMPLETE_NOTIFICATION, this);\n } else {\n this.isStopped = true;\n this._complete();\n }\n }\n\n unsubscribe(): void {\n if (!this.closed) {\n this.isStopped = true;\n super.unsubscribe();\n this.destination = null!;\n }\n }\n\n protected _next(value: T): void {\n this.destination.next(value);\n }\n\n protected _error(err: any): void {\n try {\n this.destination.error(err);\n } finally {\n this.unsubscribe();\n }\n }\n\n protected _complete(): void {\n try {\n this.destination.complete();\n } finally {\n this.unsubscribe();\n }\n }\n}\n\n/**\n * This bind is captured here because we want to be able to have\n * compatibility with monoid libraries that tend to use a method named\n * `bind`. In particular, a library called Monio requires this.\n */\nconst _bind = Function.prototype.bind;\n\nfunction bind any>(fn: Fn, thisArg: any): Fn {\n return _bind.call(fn, thisArg);\n}\n\n/**\n * Internal optimization only, DO NOT EXPOSE.\n * @internal\n */\nclass ConsumerObserver implements Observer {\n constructor(private partialObserver: Partial>) {}\n\n next(value: T): void {\n const { partialObserver } = this;\n if (partialObserver.next) {\n try {\n partialObserver.next(value);\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n\n error(err: any): void {\n const { partialObserver } = this;\n if (partialObserver.error) {\n try {\n partialObserver.error(err);\n } catch (error) {\n handleUnhandledError(error);\n }\n } else {\n handleUnhandledError(err);\n }\n }\n\n complete(): void {\n const { partialObserver } = this;\n if (partialObserver.complete) {\n try {\n partialObserver.complete();\n } catch (error) {\n handleUnhandledError(error);\n }\n }\n }\n}\n\nexport class SafeSubscriber extends Subscriber {\n constructor(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((e?: any) => void) | null,\n complete?: (() => void) | null\n ) {\n super();\n\n let partialObserver: Partial>;\n if (isFunction(observerOrNext) || !observerOrNext) {\n // The first argument is a function, not an observer. The next\n // two arguments *could* be observers, or they could be empty.\n partialObserver = {\n next: (observerOrNext ?? undefined) as (((value: T) => void) | undefined),\n error: error ?? undefined,\n complete: complete ?? undefined,\n };\n } else {\n // The first argument is a partial observer.\n let context: any;\n if (this && config.useDeprecatedNextContext) {\n // This is a deprecated path that made `this.unsubscribe()` available in\n // next handler functions passed to subscribe. This only exists behind a flag\n // now, as it is *very* slow.\n context = Object.create(observerOrNext);\n context.unsubscribe = () => this.unsubscribe();\n partialObserver = {\n next: observerOrNext.next && bind(observerOrNext.next, context),\n error: observerOrNext.error && bind(observerOrNext.error, context),\n complete: observerOrNext.complete && bind(observerOrNext.complete, context),\n };\n } else {\n // The \"normal\" path. Just use the partial observer directly.\n partialObserver = observerOrNext;\n }\n }\n\n // Wrap the partial observer to ensure it's a full observer, and\n // make sure proper error handling is accounted for.\n this.destination = new ConsumerObserver(partialObserver);\n }\n}\n\nfunction handleUnhandledError(error: any) {\n if (config.useDeprecatedSynchronousErrorHandling) {\n captureError(error);\n } else {\n // Ideal path, we report this as an unhandled error,\n // which is thrown on a new call stack.\n reportUnhandledError(error);\n }\n}\n\n/**\n * An error handler used when no error handler was supplied\n * to the SafeSubscriber -- meaning no error handler was supplied\n * do the `subscribe` call on our observable.\n * @param err The error to handle\n */\nfunction defaultErrorHandler(err: any) {\n throw err;\n}\n\n/**\n * A handler for notifications that cannot be sent to a stopped subscriber.\n * @param notification The notification being sent\n * @param subscriber The stopped subscriber\n */\nfunction handleStoppedNotification(notification: ObservableNotification, subscriber: Subscriber) {\n const { onStoppedNotification } = config;\n onStoppedNotification && timeoutProvider.setTimeout(() => onStoppedNotification(notification, subscriber));\n}\n\n/**\n * The observer used as a stub for subscriptions where the user did not\n * pass any arguments to `subscribe`. Comes with the default error handling\n * behavior.\n */\nexport const EMPTY_OBSERVER: Readonly> & { closed: true } = {\n closed: true,\n next: noop,\n error: defaultErrorHandler,\n complete: noop,\n};\n", "/**\n * Symbol.observable or a string \"@@observable\". Used for interop\n *\n * @deprecated We will no longer be exporting this symbol in upcoming versions of RxJS.\n * Instead polyfill and use Symbol.observable directly *or* use https://www.npmjs.com/package/symbol-observable\n */\nexport const observable: string | symbol = (() => (typeof Symbol === 'function' && Symbol.observable) || '@@observable')();\n", "/**\n * This function takes one parameter and just returns it. Simply put,\n * this is like `(x: T): T => x`.\n *\n * ## Examples\n *\n * This is useful in some cases when using things like `mergeMap`\n *\n * ```ts\n * import { interval, take, map, range, mergeMap, identity } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(5));\n *\n * const result$ = source$.pipe(\n * map(i => range(i)),\n * mergeMap(identity) // same as mergeMap(x => x)\n * );\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * Or when you want to selectively apply an operator\n *\n * ```ts\n * import { interval, take, identity } from 'rxjs';\n *\n * const shouldLimit = () => Math.random() < 0.5;\n *\n * const source$ = interval(1000);\n *\n * const result$ = source$.pipe(shouldLimit() ? take(5) : identity);\n *\n * result$.subscribe({\n * next: console.log\n * });\n * ```\n *\n * @param x Any value that is returned by this function\n * @returns The value passed as the first parameter to this function\n */\nexport function identity(x: T): T {\n return x;\n}\n", "import { identity } from './identity';\nimport { UnaryFunction } from '../types';\n\nexport function pipe(): typeof identity;\nexport function pipe(fn1: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction): UnaryFunction;\nexport function pipe(fn1: UnaryFunction, fn2: UnaryFunction, fn3: UnaryFunction): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction\n): UnaryFunction;\nexport function pipe(\n fn1: UnaryFunction,\n fn2: UnaryFunction,\n fn3: UnaryFunction,\n fn4: UnaryFunction,\n fn5: UnaryFunction,\n fn6: UnaryFunction,\n fn7: UnaryFunction,\n fn8: UnaryFunction,\n fn9: UnaryFunction,\n ...fns: UnaryFunction[]\n): UnaryFunction;\n\n/**\n * pipe() can be called on one or more functions, each of which can take one argument (\"UnaryFunction\")\n * and uses it to return a value.\n * It returns a function that takes one argument, passes it to the first UnaryFunction, and then\n * passes the result to the next one, passes that result to the next one, and so on. \n */\nexport function pipe(...fns: Array>): UnaryFunction {\n return pipeFromArray(fns);\n}\n\n/** @internal */\nexport function pipeFromArray(fns: Array>): UnaryFunction {\n if (fns.length === 0) {\n return identity as UnaryFunction;\n }\n\n if (fns.length === 1) {\n return fns[0];\n }\n\n return function piped(input: T): R {\n return fns.reduce((prev: any, fn: UnaryFunction) => fn(prev), input as any);\n };\n}\n", "import { Operator } from './Operator';\nimport { SafeSubscriber, Subscriber } from './Subscriber';\nimport { isSubscription, Subscription } from './Subscription';\nimport { TeardownLogic, OperatorFunction, Subscribable, Observer } from './types';\nimport { observable as Symbol_observable } from './symbol/observable';\nimport { pipeFromArray } from './util/pipe';\nimport { config } from './config';\nimport { isFunction } from './util/isFunction';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A representation of any set of values over any amount of time. This is the most basic building block\n * of RxJS.\n *\n * @class Observable\n */\nexport class Observable implements Subscribable {\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n source: Observable | undefined;\n\n /**\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n */\n operator: Operator | undefined;\n\n /**\n * @constructor\n * @param {Function} subscribe the function that is called when the Observable is\n * initially subscribed to. This function is given a Subscriber, to which new values\n * can be `next`ed, or an `error` method can be called to raise an error, or\n * `complete` can be called to notify of a successful completion.\n */\n constructor(subscribe?: (this: Observable, subscriber: Subscriber) => TeardownLogic) {\n if (subscribe) {\n this._subscribe = subscribe;\n }\n }\n\n // HACK: Since TypeScript inherits static properties too, we have to\n // fight against TypeScript here so Subject can have a different static create signature\n /**\n * Creates a new Observable by calling the Observable constructor\n * @owner Observable\n * @method create\n * @param {Function} subscribe? the subscriber function to be passed to the Observable constructor\n * @return {Observable} a new observable\n * @nocollapse\n * @deprecated Use `new Observable()` instead. Will be removed in v8.\n */\n static create: (...args: any[]) => any = (subscribe?: (subscriber: Subscriber) => TeardownLogic) => {\n return new Observable(subscribe);\n };\n\n /**\n * Creates a new Observable, with this Observable instance as the source, and the passed\n * operator defined as the new observable's operator.\n * @method lift\n * @param operator the operator defining the operation to take on the observable\n * @return a new observable with the Operator applied\n * @deprecated Internal implementation detail, do not use directly. Will be made internal in v8.\n * If you have implemented an operator using `lift`, it is recommended that you create an\n * operator by simply returning `new Observable()` directly. See \"Creating new operators from\n * scratch\" section here: https://rxjs.dev/guide/operators\n */\n lift(operator?: Operator): Observable {\n const observable = new Observable();\n observable.source = this;\n observable.operator = operator;\n return observable;\n }\n\n subscribe(observerOrNext?: Partial> | ((value: T) => void)): Subscription;\n /** @deprecated Instead of passing separate callback arguments, use an observer argument. Signatures taking separate callback arguments will be removed in v8. Details: https://rxjs.dev/deprecations/subscribe-arguments */\n subscribe(next?: ((value: T) => void) | null, error?: ((error: any) => void) | null, complete?: (() => void) | null): Subscription;\n /**\n * Invokes an execution of an Observable and registers Observer handlers for notifications it will emit.\n *\n * Use it when you have all these Observables, but still nothing is happening.\n *\n * `subscribe` is not a regular operator, but a method that calls Observable's internal `subscribe` function. It\n * might be for example a function that you passed to Observable's constructor, but most of the time it is\n * a library implementation, which defines what will be emitted by an Observable, and when it be will emitted. This means\n * that calling `subscribe` is actually the moment when Observable starts its work, not when it is created, as it is often\n * the thought.\n *\n * Apart from starting the execution of an Observable, this method allows you to listen for values\n * that an Observable emits, as well as for when it completes or errors. You can achieve this in two\n * of the following ways.\n *\n * The first way is creating an object that implements {@link Observer} interface. It should have methods\n * defined by that interface, but note that it should be just a regular JavaScript object, which you can create\n * yourself in any way you want (ES6 class, classic function constructor, object literal etc.). In particular, do\n * not attempt to use any RxJS implementation details to create Observers - you don't need them. Remember also\n * that your object does not have to implement all methods. If you find yourself creating a method that doesn't\n * do anything, you can simply omit it. Note however, if the `error` method is not provided and an error happens,\n * it will be thrown asynchronously. Errors thrown asynchronously cannot be caught using `try`/`catch`. Instead,\n * use the {@link onUnhandledError} configuration option or use a runtime handler (like `window.onerror` or\n * `process.on('error)`) to be notified of unhandled errors. Because of this, it's recommended that you provide\n * an `error` method to avoid missing thrown errors.\n *\n * The second way is to give up on Observer object altogether and simply provide callback functions in place of its methods.\n * This means you can provide three functions as arguments to `subscribe`, where the first function is equivalent\n * of a `next` method, the second of an `error` method and the third of a `complete` method. Just as in case of an Observer,\n * if you do not need to listen for something, you can omit a function by passing `undefined` or `null`,\n * since `subscribe` recognizes these functions by where they were placed in function call. When it comes\n * to the `error` function, as with an Observer, if not provided, errors emitted by an Observable will be thrown asynchronously.\n *\n * You can, however, subscribe with no parameters at all. This may be the case where you're not interested in terminal events\n * and you also handled emissions internally by using operators (e.g. using `tap`).\n *\n * Whichever style of calling `subscribe` you use, in both cases it returns a Subscription object.\n * This object allows you to call `unsubscribe` on it, which in turn will stop the work that an Observable does and will clean\n * up all resources that an Observable used. Note that cancelling a subscription will not call `complete` callback\n * provided to `subscribe` function, which is reserved for a regular completion signal that comes from an Observable.\n *\n * Remember that callbacks provided to `subscribe` are not guaranteed to be called asynchronously.\n * It is an Observable itself that decides when these functions will be called. For example {@link of}\n * by default emits all its values synchronously. Always check documentation for how given Observable\n * will behave when subscribed and if its default behavior can be modified with a `scheduler`.\n *\n * #### Examples\n *\n * Subscribe with an {@link guide/observer Observer}\n *\n * ```ts\n * import { of } from 'rxjs';\n *\n * const sumObserver = {\n * sum: 0,\n * next(value) {\n * console.log('Adding: ' + value);\n * this.sum = this.sum + value;\n * },\n * error() {\n * // We actually could just remove this method,\n * // since we do not really care about errors right now.\n * },\n * complete() {\n * console.log('Sum equals: ' + this.sum);\n * }\n * };\n *\n * of(1, 2, 3) // Synchronously emits 1, 2, 3 and then completes.\n * .subscribe(sumObserver);\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Subscribe with functions ({@link deprecations/subscribe-arguments deprecated})\n *\n * ```ts\n * import { of } from 'rxjs'\n *\n * let sum = 0;\n *\n * of(1, 2, 3).subscribe(\n * value => {\n * console.log('Adding: ' + value);\n * sum = sum + value;\n * },\n * undefined,\n * () => console.log('Sum equals: ' + sum)\n * );\n *\n * // Logs:\n * // 'Adding: 1'\n * // 'Adding: 2'\n * // 'Adding: 3'\n * // 'Sum equals: 6'\n * ```\n *\n * Cancel a subscription\n *\n * ```ts\n * import { interval } from 'rxjs';\n *\n * const subscription = interval(1000).subscribe({\n * next(num) {\n * console.log(num)\n * },\n * complete() {\n * // Will not be called, even when cancelling subscription.\n * console.log('completed!');\n * }\n * });\n *\n * setTimeout(() => {\n * subscription.unsubscribe();\n * console.log('unsubscribed!');\n * }, 2500);\n *\n * // Logs:\n * // 0 after 1s\n * // 1 after 2s\n * // 'unsubscribed!' after 2.5s\n * ```\n *\n * @param {Observer|Function} observerOrNext (optional) Either an observer with methods to be called,\n * or the first of three possible handlers, which is the handler for each value emitted from the subscribed\n * Observable.\n * @param {Function} error (optional) A handler for a terminal event resulting from an error. If no error handler is provided,\n * the error will be thrown asynchronously as unhandled.\n * @param {Function} complete (optional) A handler for a terminal event resulting from successful completion.\n * @return {Subscription} a subscription reference to the registered handlers\n * @method subscribe\n */\n subscribe(\n observerOrNext?: Partial> | ((value: T) => void) | null,\n error?: ((error: any) => void) | null,\n complete?: (() => void) | null\n ): Subscription {\n const subscriber = isSubscriber(observerOrNext) ? observerOrNext : new SafeSubscriber(observerOrNext, error, complete);\n\n errorContext(() => {\n const { operator, source } = this;\n subscriber.add(\n operator\n ? // We're dealing with a subscription in the\n // operator chain to one of our lifted operators.\n operator.call(subscriber, source)\n : source\n ? // If `source` has a value, but `operator` does not, something that\n // had intimate knowledge of our API, like our `Subject`, must have\n // set it. We're going to just call `_subscribe` directly.\n this._subscribe(subscriber)\n : // In all other cases, we're likely wrapping a user-provided initializer\n // function, so we need to catch errors and handle them appropriately.\n this._trySubscribe(subscriber)\n );\n });\n\n return subscriber;\n }\n\n /** @internal */\n protected _trySubscribe(sink: Subscriber): TeardownLogic {\n try {\n return this._subscribe(sink);\n } catch (err) {\n // We don't need to return anything in this case,\n // because it's just going to try to `add()` to a subscription\n // above.\n sink.error(err);\n }\n }\n\n /**\n * Used as a NON-CANCELLABLE means of subscribing to an observable, for use with\n * APIs that expect promises, like `async/await`. You cannot unsubscribe from this.\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * #### Example\n *\n * ```ts\n * import { interval, take } from 'rxjs';\n *\n * const source$ = interval(1000).pipe(take(4));\n *\n * async function getTotal() {\n * let total = 0;\n *\n * await source$.forEach(value => {\n * total += value;\n * console.log('observable -> ' + value);\n * });\n *\n * return total;\n * }\n *\n * getTotal().then(\n * total => console.log('Total: ' + total)\n * );\n *\n * // Expected:\n * // 'observable -> 0'\n * // 'observable -> 1'\n * // 'observable -> 2'\n * // 'observable -> 3'\n * // 'Total: 6'\n * ```\n *\n * @param next a handler for each value emitted by the observable\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n */\n forEach(next: (value: T) => void): Promise;\n\n /**\n * @param next a handler for each value emitted by the observable\n * @param promiseCtor a constructor function used to instantiate the Promise\n * @return a promise that either resolves on observable completion or\n * rejects with the handled error\n * @deprecated Passing a Promise constructor will no longer be available\n * in upcoming versions of RxJS. This is because it adds weight to the library, for very\n * little benefit. If you need this functionality, it is recommended that you either\n * polyfill Promise, or you create an adapter to convert the returned native promise\n * to whatever promise implementation you wanted. Will be removed in v8.\n */\n forEach(next: (value: T) => void, promiseCtor: PromiseConstructorLike): Promise;\n\n forEach(next: (value: T) => void, promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n const subscriber = new SafeSubscriber({\n next: (value) => {\n try {\n next(value);\n } catch (err) {\n reject(err);\n subscriber.unsubscribe();\n }\n },\n error: reject,\n complete: resolve,\n });\n this.subscribe(subscriber);\n }) as Promise;\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): TeardownLogic {\n return this.source?.subscribe(subscriber);\n }\n\n /**\n * An interop point defined by the es7-observable spec https://github.com/zenparsing/es-observable\n * @method Symbol.observable\n * @return {Observable} this instance of the observable\n */\n [Symbol_observable]() {\n return this;\n }\n\n /* tslint:disable:max-line-length */\n pipe(): Observable;\n pipe(op1: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction): Observable;\n pipe(op1: OperatorFunction, op2: OperatorFunction, op3: OperatorFunction): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction\n ): Observable;\n pipe(\n op1: OperatorFunction,\n op2: OperatorFunction,\n op3: OperatorFunction,\n op4: OperatorFunction,\n op5: OperatorFunction,\n op6: OperatorFunction,\n op7: OperatorFunction,\n op8: OperatorFunction,\n op9: OperatorFunction,\n ...operations: OperatorFunction[]\n ): Observable;\n /* tslint:enable:max-line-length */\n\n /**\n * Used to stitch together functional operators into a chain.\n * @method pipe\n * @return {Observable} the Observable result of all of the operators having\n * been called in the order they were passed in.\n *\n * ## Example\n *\n * ```ts\n * import { interval, filter, map, scan } from 'rxjs';\n *\n * interval(1000)\n * .pipe(\n * filter(x => x % 2 === 0),\n * map(x => x + x),\n * scan((acc, x) => acc + x)\n * )\n * .subscribe(x => console.log(x));\n * ```\n */\n pipe(...operations: OperatorFunction[]): Observable {\n return pipeFromArray(operations)(this);\n }\n\n /* tslint:disable:max-line-length */\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: typeof Promise): Promise;\n /** @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise */\n toPromise(PromiseCtor: PromiseConstructorLike): Promise;\n /* tslint:enable:max-line-length */\n\n /**\n * Subscribe to this Observable and get a Promise resolving on\n * `complete` with the last emission (if any).\n *\n * **WARNING**: Only use this with observables you *know* will complete. If the source\n * observable does not complete, you will end up with a promise that is hung up, and\n * potentially all of the state of an async function hanging out in memory. To avoid\n * this situation, look into adding something like {@link timeout}, {@link take},\n * {@link takeWhile}, or {@link takeUntil} amongst others.\n *\n * @method toPromise\n * @param [promiseCtor] a constructor function used to instantiate\n * the Promise\n * @return A Promise that resolves with the last value emit, or\n * rejects on an error. If there were no emissions, Promise\n * resolves with undefined.\n * @deprecated Replaced with {@link firstValueFrom} and {@link lastValueFrom}. Will be removed in v8. Details: https://rxjs.dev/deprecations/to-promise\n */\n toPromise(promiseCtor?: PromiseConstructorLike): Promise {\n promiseCtor = getPromiseCtor(promiseCtor);\n\n return new promiseCtor((resolve, reject) => {\n let value: T | undefined;\n this.subscribe(\n (x: T) => (value = x),\n (err: any) => reject(err),\n () => resolve(value)\n );\n }) as Promise;\n }\n}\n\n/**\n * Decides between a passed promise constructor from consuming code,\n * A default configured promise constructor, and the native promise\n * constructor and returns it. If nothing can be found, it will throw\n * an error.\n * @param promiseCtor The optional promise constructor to passed by consuming code\n */\nfunction getPromiseCtor(promiseCtor: PromiseConstructorLike | undefined) {\n return promiseCtor ?? config.Promise ?? Promise;\n}\n\nfunction isObserver(value: any): value is Observer {\n return value && isFunction(value.next) && isFunction(value.error) && isFunction(value.complete);\n}\n\nfunction isSubscriber(value: any): value is Subscriber {\n return (value && value instanceof Subscriber) || (isObserver(value) && isSubscription(value));\n}\n", "import { Observable } from '../Observable';\nimport { Subscriber } from '../Subscriber';\nimport { OperatorFunction } from '../types';\nimport { isFunction } from './isFunction';\n\n/**\n * Used to determine if an object is an Observable with a lift function.\n */\nexport function hasLift(source: any): source is { lift: InstanceType['lift'] } {\n return isFunction(source?.lift);\n}\n\n/**\n * Creates an `OperatorFunction`. Used to define operators throughout the library in a concise way.\n * @param init The logic to connect the liftedSource to the subscriber at the moment of subscription.\n */\nexport function operate(\n init: (liftedSource: Observable, subscriber: Subscriber) => (() => void) | void\n): OperatorFunction {\n return (source: Observable) => {\n if (hasLift(source)) {\n return source.lift(function (this: Subscriber, liftedSource: Observable) {\n try {\n return init(liftedSource, this);\n } catch (err) {\n this.error(err);\n }\n });\n }\n throw new TypeError('Unable to lift unknown Observable type');\n };\n}\n", "import { Subscriber } from '../Subscriber';\n\n/**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional teardown logic here. This will only be called on teardown if the\n * subscriber itself is not already closed. This is called after all other teardown logic is executed.\n */\nexport function createOperatorSubscriber(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n onFinalize?: () => void\n): Subscriber {\n return new OperatorSubscriber(destination, onNext, onComplete, onError, onFinalize);\n}\n\n/**\n * A generic helper for allowing operators to be created with a Subscriber and\n * use closures to capture necessary state from the operator function itself.\n */\nexport class OperatorSubscriber extends Subscriber {\n /**\n * Creates an instance of an `OperatorSubscriber`.\n * @param destination The downstream subscriber.\n * @param onNext Handles next values, only called if this subscriber is not stopped or closed. Any\n * error that occurs in this function is caught and sent to the `error` method of this subscriber.\n * @param onError Handles errors from the subscription, any errors that occur in this handler are caught\n * and send to the `destination` error handler.\n * @param onComplete Handles completion notification from the subscription. Any errors that occur in\n * this handler are sent to the `destination` error handler.\n * @param onFinalize Additional finalization logic here. This will only be called on finalization if the\n * subscriber itself is not already closed. This is called after all other finalization logic is executed.\n * @param shouldUnsubscribe An optional check to see if an unsubscribe call should truly unsubscribe.\n * NOTE: This currently **ONLY** exists to support the strange behavior of {@link groupBy}, where unsubscription\n * to the resulting observable does not actually disconnect from the source if there are active subscriptions\n * to any grouped observable. (DO NOT EXPOSE OR USE EXTERNALLY!!!)\n */\n constructor(\n destination: Subscriber,\n onNext?: (value: T) => void,\n onComplete?: () => void,\n onError?: (err: any) => void,\n private onFinalize?: () => void,\n private shouldUnsubscribe?: () => boolean\n ) {\n // It's important - for performance reasons - that all of this class's\n // members are initialized and that they are always initialized in the same\n // order. This will ensure that all OperatorSubscriber instances have the\n // same hidden class in V8. This, in turn, will help keep the number of\n // hidden classes involved in property accesses within the base class as\n // low as possible. If the number of hidden classes involved exceeds four,\n // the property accesses will become megamorphic and performance penalties\n // will be incurred - i.e. inline caches won't be used.\n //\n // The reasons for ensuring all instances have the same hidden class are\n // further discussed in this blog post from Benedikt Meurer:\n // https://benediktmeurer.de/2018/03/23/impact-of-polymorphism-on-component-based-frameworks-like-react/\n super(destination);\n this._next = onNext\n ? function (this: OperatorSubscriber, value: T) {\n try {\n onNext(value);\n } catch (err) {\n destination.error(err);\n }\n }\n : super._next;\n this._error = onError\n ? function (this: OperatorSubscriber, err: any) {\n try {\n onError(err);\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._error;\n this._complete = onComplete\n ? function (this: OperatorSubscriber) {\n try {\n onComplete();\n } catch (err) {\n // Send any errors that occur down stream.\n destination.error(err);\n } finally {\n // Ensure finalization.\n this.unsubscribe();\n }\n }\n : super._complete;\n }\n\n unsubscribe() {\n if (!this.shouldUnsubscribe || this.shouldUnsubscribe()) {\n const { closed } = this;\n super.unsubscribe();\n // Execute additional teardown if we have any and we didn't already do so.\n !closed && this.onFinalize?.();\n }\n }\n}\n", "import { Subscription } from '../Subscription';\n\ninterface AnimationFrameProvider {\n schedule(callback: FrameRequestCallback): Subscription;\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n delegate:\n | {\n requestAnimationFrame: typeof requestAnimationFrame;\n cancelAnimationFrame: typeof cancelAnimationFrame;\n }\n | undefined;\n}\n\nexport const animationFrameProvider: AnimationFrameProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n schedule(callback) {\n let request = requestAnimationFrame;\n let cancel: typeof cancelAnimationFrame | undefined = cancelAnimationFrame;\n const { delegate } = animationFrameProvider;\n if (delegate) {\n request = delegate.requestAnimationFrame;\n cancel = delegate.cancelAnimationFrame;\n }\n const handle = request((timestamp) => {\n // Clear the cancel function. The request has been fulfilled, so\n // attempting to cancel the request upon unsubscription would be\n // pointless.\n cancel = undefined;\n callback(timestamp);\n });\n return new Subscription(() => cancel?.(handle));\n },\n requestAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.requestAnimationFrame || requestAnimationFrame)(...args);\n },\n cancelAnimationFrame(...args) {\n const { delegate } = animationFrameProvider;\n return (delegate?.cancelAnimationFrame || cancelAnimationFrame)(...args);\n },\n delegate: undefined,\n};\n", "import { createErrorClass } from './createErrorClass';\n\nexport interface ObjectUnsubscribedError extends Error {}\n\nexport interface ObjectUnsubscribedErrorCtor {\n /**\n * @deprecated Internal implementation detail. Do not construct error instances.\n * Cannot be tagged as internal: https://github.com/ReactiveX/rxjs/issues/6269\n */\n new (): ObjectUnsubscribedError;\n}\n\n/**\n * An error thrown when an action is invalid because the object has been\n * unsubscribed.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n *\n * @class ObjectUnsubscribedError\n */\nexport const ObjectUnsubscribedError: ObjectUnsubscribedErrorCtor = createErrorClass(\n (_super) =>\n function ObjectUnsubscribedErrorImpl(this: any) {\n _super(this);\n this.name = 'ObjectUnsubscribedError';\n this.message = 'object unsubscribed';\n }\n);\n", "import { Operator } from './Operator';\nimport { Observable } from './Observable';\nimport { Subscriber } from './Subscriber';\nimport { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';\nimport { Observer, SubscriptionLike, TeardownLogic } from './types';\nimport { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';\nimport { arrRemove } from './util/arrRemove';\nimport { errorContext } from './util/errorContext';\n\n/**\n * A Subject is a special type of Observable that allows values to be\n * multicasted to many Observers. Subjects are like EventEmitters.\n *\n * Every Subject is an Observable and an Observer. You can subscribe to a\n * Subject, and you can call next to feed values as well as error and complete.\n */\nexport class Subject extends Observable implements SubscriptionLike {\n closed = false;\n\n private currentObservers: Observer[] | null = null;\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n observers: Observer[] = [];\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n isStopped = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n hasError = false;\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n thrownError: any = null;\n\n /**\n * Creates a \"subject\" by basically gluing an observer to an observable.\n *\n * @nocollapse\n * @deprecated Recommended you do not use. Will be removed at some point in the future. Plans for replacement still under discussion.\n */\n static create: (...args: any[]) => any = (destination: Observer, source: Observable): AnonymousSubject => {\n return new AnonymousSubject(destination, source);\n };\n\n constructor() {\n // NOTE: This must be here to obscure Observable's constructor.\n super();\n }\n\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n lift(operator: Operator): Observable {\n const subject = new AnonymousSubject(this, this);\n subject.operator = operator as any;\n return subject as any;\n }\n\n /** @internal */\n protected _throwIfClosed() {\n if (this.closed) {\n throw new ObjectUnsubscribedError();\n }\n }\n\n next(value: T) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n if (!this.currentObservers) {\n this.currentObservers = Array.from(this.observers);\n }\n for (const observer of this.currentObservers) {\n observer.next(value);\n }\n }\n });\n }\n\n error(err: any) {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.hasError = this.isStopped = true;\n this.thrownError = err;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.error(err);\n }\n }\n });\n }\n\n complete() {\n errorContext(() => {\n this._throwIfClosed();\n if (!this.isStopped) {\n this.isStopped = true;\n const { observers } = this;\n while (observers.length) {\n observers.shift()!.complete();\n }\n }\n });\n }\n\n unsubscribe() {\n this.isStopped = this.closed = true;\n this.observers = this.currentObservers = null!;\n }\n\n get observed() {\n return this.observers?.length > 0;\n }\n\n /** @internal */\n protected _trySubscribe(subscriber: Subscriber): TeardownLogic {\n this._throwIfClosed();\n return super._trySubscribe(subscriber);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._checkFinalizedStatuses(subscriber);\n return this._innerSubscribe(subscriber);\n }\n\n /** @internal */\n protected _innerSubscribe(subscriber: Subscriber) {\n const { hasError, isStopped, observers } = this;\n if (hasError || isStopped) {\n return EMPTY_SUBSCRIPTION;\n }\n this.currentObservers = null;\n observers.push(subscriber);\n return new Subscription(() => {\n this.currentObservers = null;\n arrRemove(observers, subscriber);\n });\n }\n\n /** @internal */\n protected _checkFinalizedStatuses(subscriber: Subscriber) {\n const { hasError, thrownError, isStopped } = this;\n if (hasError) {\n subscriber.error(thrownError);\n } else if (isStopped) {\n subscriber.complete();\n }\n }\n\n /**\n * Creates a new Observable with this Subject as the source. You can do this\n * to create custom Observer-side logic of the Subject and conceal it from\n * code that uses the Observable.\n * @return {Observable} Observable that the Subject casts to\n */\n asObservable(): Observable {\n const observable: any = new Observable();\n observable.source = this;\n return observable;\n }\n}\n\n/**\n * @class AnonymousSubject\n */\nexport class AnonymousSubject extends Subject {\n constructor(\n /** @deprecated Internal implementation detail, do not use directly. Will be made internal in v8. */\n public destination?: Observer,\n source?: Observable\n ) {\n super();\n this.source = source;\n }\n\n next(value: T) {\n this.destination?.next?.(value);\n }\n\n error(err: any) {\n this.destination?.error?.(err);\n }\n\n complete() {\n this.destination?.complete?.();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n return this.source?.subscribe(subscriber) ?? EMPTY_SUBSCRIPTION;\n }\n}\n", "import { Subject } from './Subject';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\n\n/**\n * A variant of Subject that requires an initial value and emits its current\n * value whenever it is subscribed to.\n *\n * @class BehaviorSubject\n */\nexport class BehaviorSubject extends Subject {\n constructor(private _value: T) {\n super();\n }\n\n get value(): T {\n return this.getValue();\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n const subscription = super._subscribe(subscriber);\n !subscription.closed && subscriber.next(this._value);\n return subscription;\n }\n\n getValue(): T {\n const { hasError, thrownError, _value } = this;\n if (hasError) {\n throw thrownError;\n }\n this._throwIfClosed();\n return _value;\n }\n\n next(value: T): void {\n super.next((this._value = value));\n }\n}\n", "import { TimestampProvider } from '../types';\n\ninterface DateTimestampProvider extends TimestampProvider {\n delegate: TimestampProvider | undefined;\n}\n\nexport const dateTimestampProvider: DateTimestampProvider = {\n now() {\n // Use the variable rather than `this` so that the function can be called\n // without being bound to the provider.\n return (dateTimestampProvider.delegate || Date).now();\n },\n delegate: undefined,\n};\n", "import { Subject } from './Subject';\nimport { TimestampProvider } from './types';\nimport { Subscriber } from './Subscriber';\nimport { Subscription } from './Subscription';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * A variant of {@link Subject} that \"replays\" old values to new subscribers by emitting them when they first subscribe.\n *\n * `ReplaySubject` has an internal buffer that will store a specified number of values that it has observed. Like `Subject`,\n * `ReplaySubject` \"observes\" values by having them passed to its `next` method. When it observes a value, it will store that\n * value for a time determined by the configuration of the `ReplaySubject`, as passed to its constructor.\n *\n * When a new subscriber subscribes to the `ReplaySubject` instance, it will synchronously emit all values in its buffer in\n * a First-In-First-Out (FIFO) manner. The `ReplaySubject` will also complete, if it has observed completion; and it will\n * error if it has observed an error.\n *\n * There are two main configuration items to be concerned with:\n *\n * 1. `bufferSize` - This will determine how many items are stored in the buffer, defaults to infinite.\n * 2. `windowTime` - The amount of time to hold a value in the buffer before removing it from the buffer.\n *\n * Both configurations may exist simultaneously. So if you would like to buffer a maximum of 3 values, as long as the values\n * are less than 2 seconds old, you could do so with a `new ReplaySubject(3, 2000)`.\n *\n * ### Differences with BehaviorSubject\n *\n * `BehaviorSubject` is similar to `new ReplaySubject(1)`, with a couple of exceptions:\n *\n * 1. `BehaviorSubject` comes \"primed\" with a single value upon construction.\n * 2. `ReplaySubject` will replay values, even after observing an error, where `BehaviorSubject` will not.\n *\n * @see {@link Subject}\n * @see {@link BehaviorSubject}\n * @see {@link shareReplay}\n */\nexport class ReplaySubject extends Subject {\n private _buffer: (T | number)[] = [];\n private _infiniteTimeWindow = true;\n\n /**\n * @param bufferSize The size of the buffer to replay on subscription\n * @param windowTime The amount of time the buffered items will stay buffered\n * @param timestampProvider An object with a `now()` method that provides the current timestamp. This is used to\n * calculate the amount of time something has been buffered.\n */\n constructor(\n private _bufferSize = Infinity,\n private _windowTime = Infinity,\n private _timestampProvider: TimestampProvider = dateTimestampProvider\n ) {\n super();\n this._infiniteTimeWindow = _windowTime === Infinity;\n this._bufferSize = Math.max(1, _bufferSize);\n this._windowTime = Math.max(1, _windowTime);\n }\n\n next(value: T): void {\n const { isStopped, _buffer, _infiniteTimeWindow, _timestampProvider, _windowTime } = this;\n if (!isStopped) {\n _buffer.push(value);\n !_infiniteTimeWindow && _buffer.push(_timestampProvider.now() + _windowTime);\n }\n this._trimBuffer();\n super.next(value);\n }\n\n /** @internal */\n protected _subscribe(subscriber: Subscriber): Subscription {\n this._throwIfClosed();\n this._trimBuffer();\n\n const subscription = this._innerSubscribe(subscriber);\n\n const { _infiniteTimeWindow, _buffer } = this;\n // We use a copy here, so reentrant code does not mutate our array while we're\n // emitting it to a new subscriber.\n const copy = _buffer.slice();\n for (let i = 0; i < copy.length && !subscriber.closed; i += _infiniteTimeWindow ? 1 : 2) {\n subscriber.next(copy[i] as T);\n }\n\n this._checkFinalizedStatuses(subscriber);\n\n return subscription;\n }\n\n private _trimBuffer() {\n const { _bufferSize, _timestampProvider, _buffer, _infiniteTimeWindow } = this;\n // If we don't have an infinite buffer size, and we're over the length,\n // use splice to truncate the old buffer values off. Note that we have to\n // double the size for instances where we're not using an infinite time window\n // because we're storing the values and the timestamps in the same array.\n const adjustedBufferSize = (_infiniteTimeWindow ? 1 : 2) * _bufferSize;\n _bufferSize < Infinity && adjustedBufferSize < _buffer.length && _buffer.splice(0, _buffer.length - adjustedBufferSize);\n\n // Now, if we're not in an infinite time window, remove all values where the time is\n // older than what is allowed.\n if (!_infiniteTimeWindow) {\n const now = _timestampProvider.now();\n let last = 0;\n // Search the array for the first timestamp that isn't expired and\n // truncate the buffer up to that point.\n for (let i = 1; i < _buffer.length && (_buffer[i] as number) <= now; i += 2) {\n last = i;\n }\n last && _buffer.splice(0, last + 1);\n }\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Subscription } from '../Subscription';\nimport { SchedulerAction } from '../types';\n\n/**\n * A unit of work to be executed in a `scheduler`. An action is typically\n * created from within a {@link SchedulerLike} and an RxJS user does not need to concern\n * themselves about creating and manipulating an Action.\n *\n * ```ts\n * class Action extends Subscription {\n * new (scheduler: Scheduler, work: (state?: T) => void);\n * schedule(state?: T, delay: number = 0): Subscription;\n * }\n * ```\n *\n * @class Action\n */\nexport class Action extends Subscription {\n constructor(scheduler: Scheduler, work: (this: SchedulerAction, state?: T) => void) {\n super();\n }\n /**\n * Schedules this action on its parent {@link SchedulerLike} for execution. May be passed\n * some context object, `state`. May happen at some point in the future,\n * according to the `delay` parameter, if specified.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler.\n * @return {void}\n */\n public schedule(state?: T, delay: number = 0): Subscription {\n return this;\n }\n}\n", "import type { TimerHandle } from './timerHandle';\ntype SetIntervalFunction = (handler: () => void, timeout?: number, ...args: any[]) => TimerHandle;\ntype ClearIntervalFunction = (handle: TimerHandle) => void;\n\ninterface IntervalProvider {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n delegate:\n | {\n setInterval: SetIntervalFunction;\n clearInterval: ClearIntervalFunction;\n }\n | undefined;\n}\n\nexport const intervalProvider: IntervalProvider = {\n // When accessing the delegate, use the variable rather than `this` so that\n // the functions can be called without being bound to the provider.\n setInterval(handler: () => void, timeout?: number, ...args) {\n const { delegate } = intervalProvider;\n if (delegate?.setInterval) {\n return delegate.setInterval(handler, timeout, ...args);\n }\n return setInterval(handler, timeout, ...args);\n },\n clearInterval(handle) {\n const { delegate } = intervalProvider;\n return (delegate?.clearInterval || clearInterval)(handle as any);\n },\n delegate: undefined,\n};\n", "import { Action } from './Action';\nimport { SchedulerAction } from '../types';\nimport { Subscription } from '../Subscription';\nimport { AsyncScheduler } from './AsyncScheduler';\nimport { intervalProvider } from './intervalProvider';\nimport { arrRemove } from '../util/arrRemove';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncAction extends Action {\n public id: TimerHandle | undefined;\n public state?: T;\n // @ts-ignore: Property has no initializer and is not definitely assigned\n public delay: number;\n protected pending: boolean = false;\n\n constructor(protected scheduler: AsyncScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (this.closed) {\n return this;\n }\n\n // Always replace the current state with the new state.\n this.state = state;\n\n const id = this.id;\n const scheduler = this.scheduler;\n\n //\n // Important implementation note:\n //\n // Actions only execute once by default, unless rescheduled from within the\n // scheduled callback. This allows us to implement single and repeat\n // actions via the same code path, without adding API surface area, as well\n // as mimic traditional recursion but across asynchronous boundaries.\n //\n // However, JS runtimes and timers distinguish between intervals achieved by\n // serial `setTimeout` calls vs. a single `setInterval` call. An interval of\n // serial `setTimeout` calls can be individually delayed, which delays\n // scheduling the next `setTimeout`, and so on. `setInterval` attempts to\n // guarantee the interval callback will be invoked more precisely to the\n // interval period, regardless of load.\n //\n // Therefore, we use `setInterval` to schedule single and repeat actions.\n // If the action reschedules itself with the same delay, the interval is not\n // canceled. If the action doesn't reschedule, or reschedules with a\n // different delay, the interval will be canceled after scheduled callback\n // execution.\n //\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, delay);\n }\n\n // Set the pending flag indicating that this action has been scheduled, or\n // has recursively rescheduled itself.\n this.pending = true;\n\n this.delay = delay;\n // If this action has already an async Id, don't request a new one.\n this.id = this.id ?? this.requestAsyncId(scheduler, this.id, delay);\n\n return this;\n }\n\n protected requestAsyncId(scheduler: AsyncScheduler, _id?: TimerHandle, delay: number = 0): TimerHandle {\n return intervalProvider.setInterval(scheduler.flush.bind(scheduler, this), delay);\n }\n\n protected recycleAsyncId(_scheduler: AsyncScheduler, id?: TimerHandle, delay: number | null = 0): TimerHandle | undefined {\n // If this action is rescheduled with the same delay time, don't clear the interval id.\n if (delay != null && this.delay === delay && this.pending === false) {\n return id;\n }\n // Otherwise, if the action's delay time is different from the current delay,\n // or the action has been rescheduled before it's executed, clear the interval id\n if (id != null) {\n intervalProvider.clearInterval(id);\n }\n\n return undefined;\n }\n\n /**\n * Immediately executes this action and the `work` it contains.\n * @return {any}\n */\n public execute(state: T, delay: number): any {\n if (this.closed) {\n return new Error('executing a cancelled action');\n }\n\n this.pending = false;\n const error = this._execute(state, delay);\n if (error) {\n return error;\n } else if (this.pending === false && this.id != null) {\n // Dequeue if the action didn't reschedule itself. Don't call\n // unsubscribe(), because the action could reschedule later.\n // For example:\n // ```\n // scheduler.schedule(function doWork(counter) {\n // /* ... I'm a busy worker bee ... */\n // var originalAction = this;\n // /* wait 100ms before rescheduling the action */\n // setTimeout(function () {\n // originalAction.schedule(counter + 1);\n // }, 100);\n // }, 1000);\n // ```\n this.id = this.recycleAsyncId(this.scheduler, this.id, null);\n }\n }\n\n protected _execute(state: T, _delay: number): any {\n let errored: boolean = false;\n let errorValue: any;\n try {\n this.work(state);\n } catch (e) {\n errored = true;\n // HACK: Since code elsewhere is relying on the \"truthiness\" of the\n // return here, we can't have it return \"\" or 0 or false.\n // TODO: Clean this up when we refactor schedulers mid-version-8 or so.\n errorValue = e ? e : new Error('Scheduled action threw falsy error');\n }\n if (errored) {\n this.unsubscribe();\n return errorValue;\n }\n }\n\n unsubscribe() {\n if (!this.closed) {\n const { id, scheduler } = this;\n const { actions } = scheduler;\n\n this.work = this.state = this.scheduler = null!;\n this.pending = false;\n\n arrRemove(actions, this);\n if (id != null) {\n this.id = this.recycleAsyncId(scheduler, id, null);\n }\n\n this.delay = null!;\n super.unsubscribe();\n }\n }\n}\n", "import { Action } from './scheduler/Action';\nimport { Subscription } from './Subscription';\nimport { SchedulerLike, SchedulerAction } from './types';\nimport { dateTimestampProvider } from './scheduler/dateTimestampProvider';\n\n/**\n * An execution context and a data structure to order tasks and schedule their\n * execution. Provides a notion of (potentially virtual) time, through the\n * `now()` getter method.\n *\n * Each unit of work in a Scheduler is called an `Action`.\n *\n * ```ts\n * class Scheduler {\n * now(): number;\n * schedule(work, delay?, state?): Subscription;\n * }\n * ```\n *\n * @class Scheduler\n * @deprecated Scheduler is an internal implementation detail of RxJS, and\n * should not be used directly. Rather, create your own class and implement\n * {@link SchedulerLike}. Will be made internal in v8.\n */\nexport class Scheduler implements SchedulerLike {\n public static now: () => number = dateTimestampProvider.now;\n\n constructor(private schedulerActionCtor: typeof Action, now: () => number = Scheduler.now) {\n this.now = now;\n }\n\n /**\n * A getter method that returns a number representing the current time\n * (at the time this function was called) according to the scheduler's own\n * internal clock.\n * @return {number} A number that represents the current time. May or may not\n * have a relation to wall-clock time. May or may not refer to a time unit\n * (e.g. milliseconds).\n */\n public now: () => number;\n\n /**\n * Schedules a function, `work`, for execution. May happen at some point in\n * the future, according to the `delay` parameter, if specified. May be passed\n * some context object, `state`, which will be passed to the `work` function.\n *\n * The given arguments will be processed an stored as an Action object in a\n * queue of actions.\n *\n * @param {function(state: ?T): ?Subscription} work A function representing a\n * task, or some unit of work to be executed by the Scheduler.\n * @param {number} [delay] Time to wait before executing the work, where the\n * time unit is implicit and defined by the Scheduler itself.\n * @param {T} [state] Some contextual data that the `work` function uses when\n * called by the Scheduler.\n * @return {Subscription} A subscription in order to be able to unsubscribe\n * the scheduled work.\n */\n public schedule(work: (this: SchedulerAction, state?: T) => void, delay: number = 0, state?: T): Subscription {\n return new this.schedulerActionCtor(this, work).schedule(state, delay);\n }\n}\n", "import { Scheduler } from '../Scheduler';\nimport { Action } from './Action';\nimport { AsyncAction } from './AsyncAction';\nimport { TimerHandle } from './timerHandle';\n\nexport class AsyncScheduler extends Scheduler {\n public actions: Array> = [];\n /**\n * A flag to indicate whether the Scheduler is currently executing a batch of\n * queued actions.\n * @type {boolean}\n * @internal\n */\n public _active: boolean = false;\n /**\n * An internal ID used to track the latest asynchronous task such as those\n * coming from `setTimeout`, `setInterval`, `requestAnimationFrame`, and\n * others.\n * @type {any}\n * @internal\n */\n public _scheduled: TimerHandle | undefined;\n\n constructor(SchedulerAction: typeof Action, now: () => number = Scheduler.now) {\n super(SchedulerAction, now);\n }\n\n public flush(action: AsyncAction): void {\n const { actions } = this;\n\n if (this._active) {\n actions.push(action);\n return;\n }\n\n let error: any;\n this._active = true;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions.shift()!)); // exhaust the scheduler queue\n\n this._active = false;\n\n if (error) {\n while ((action = actions.shift()!)) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\n/**\n *\n * Async Scheduler\n *\n * Schedule task as if you used setTimeout(task, duration)\n *\n * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript\n * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating\n * in intervals.\n *\n * If you just want to \"defer\" task, that is to perform it right after currently\n * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),\n * better choice will be the {@link asapScheduler} scheduler.\n *\n * ## Examples\n * Use async scheduler to delay task\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * const task = () => console.log('it works!');\n *\n * asyncScheduler.schedule(task, 2000);\n *\n * // After 2 seconds logs:\n * // \"it works!\"\n * ```\n *\n * Use async scheduler to repeat task in intervals\n * ```ts\n * import { asyncScheduler } from 'rxjs';\n *\n * function task(state) {\n * console.log(state);\n * this.schedule(state + 1, 1000); // `this` references currently executing Action,\n * // which we reschedule with new state and delay\n * }\n *\n * asyncScheduler.schedule(task, 3000, 0);\n *\n * // Logs:\n * // 0 after 3s\n * // 1 after 4s\n * // 2 after 5s\n * // 3 after 6s\n * ```\n */\n\nexport const asyncScheduler = new AsyncScheduler(AsyncAction);\n\n/**\n * @deprecated Renamed to {@link asyncScheduler}. Will be removed in v8.\n */\nexport const async = asyncScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { Subscription } from '../Subscription';\nimport { QueueScheduler } from './QueueScheduler';\nimport { SchedulerAction } from '../types';\nimport { TimerHandle } from './timerHandle';\n\nexport class QueueAction extends AsyncAction {\n constructor(protected scheduler: QueueScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n public schedule(state?: T, delay: number = 0): Subscription {\n if (delay > 0) {\n return super.schedule(state, delay);\n }\n this.delay = delay;\n this.state = state;\n this.scheduler.flush(this);\n return this;\n }\n\n public execute(state: T, delay: number): any {\n return delay > 0 || this.closed ? super.execute(state, delay) : this._execute(state, delay);\n }\n\n protected requestAsyncId(scheduler: QueueScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n\n if ((delay != null && delay > 0) || (delay == null && this.delay > 0)) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n\n // Otherwise flush the scheduler starting with this action.\n scheduler.flush(this);\n\n // HACK: In the past, this was returning `void`. However, `void` isn't a valid\n // `TimerHandle`, and generally the return value here isn't really used. So the\n // compromise is to return `0` which is both \"falsy\" and a valid `TimerHandle`,\n // as opposed to refactoring every other instanceo of `requestAsyncId`.\n return 0;\n }\n}\n", "import { AsyncScheduler } from './AsyncScheduler';\n\nexport class QueueScheduler extends AsyncScheduler {\n}\n", "import { QueueAction } from './QueueAction';\nimport { QueueScheduler } from './QueueScheduler';\n\n/**\n *\n * Queue Scheduler\n *\n * Put every next task on a queue, instead of executing it immediately\n *\n * `queue` scheduler, when used with delay, behaves the same as {@link asyncScheduler} scheduler.\n *\n * When used without delay, it schedules given task synchronously - executes it right when\n * it is scheduled. However when called recursively, that is when inside the scheduled task,\n * another task is scheduled with queue scheduler, instead of executing immediately as well,\n * that task will be put on a queue and wait for current one to finish.\n *\n * This means that when you execute task with `queue` scheduler, you are sure it will end\n * before any other task scheduled with that scheduler will start.\n *\n * ## Examples\n * Schedule recursively first, then do something\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(() => {\n * queueScheduler.schedule(() => console.log('second')); // will not happen now, but will be put on a queue\n *\n * console.log('first');\n * });\n *\n * // Logs:\n * // \"first\"\n * // \"second\"\n * ```\n *\n * Reschedule itself recursively\n * ```ts\n * import { queueScheduler } from 'rxjs';\n *\n * queueScheduler.schedule(function(state) {\n * if (state !== 0) {\n * console.log('before', state);\n * this.schedule(state - 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * console.log('after', state);\n * }\n * }, 0, 3);\n *\n * // In scheduler that runs recursively, you would expect:\n * // \"before\", 3\n * // \"before\", 2\n * // \"before\", 1\n * // \"after\", 1\n * // \"after\", 2\n * // \"after\", 3\n *\n * // But with queue it logs:\n * // \"before\", 3\n * // \"after\", 3\n * // \"before\", 2\n * // \"after\", 2\n * // \"before\", 1\n * // \"after\", 1\n * ```\n */\n\nexport const queueScheduler = new QueueScheduler(QueueAction);\n\n/**\n * @deprecated Renamed to {@link queueScheduler}. Will be removed in v8.\n */\nexport const queue = queueScheduler;\n", "import { AsyncAction } from './AsyncAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\nimport { SchedulerAction } from '../types';\nimport { animationFrameProvider } from './animationFrameProvider';\nimport { TimerHandle } from './timerHandle';\n\nexport class AnimationFrameAction extends AsyncAction {\n constructor(protected scheduler: AnimationFrameScheduler, protected work: (this: SchedulerAction, state?: T) => void) {\n super(scheduler, work);\n }\n\n protected requestAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle {\n // If delay is greater than 0, request as an async action.\n if (delay !== null && delay > 0) {\n return super.requestAsyncId(scheduler, id, delay);\n }\n // Push the action to the end of the scheduler queue.\n scheduler.actions.push(this);\n // If an animation frame has already been requested, don't request another\n // one. If an animation frame hasn't been requested yet, request one. Return\n // the current animation frame request id.\n return scheduler._scheduled || (scheduler._scheduled = animationFrameProvider.requestAnimationFrame(() => scheduler.flush(undefined)));\n }\n\n protected recycleAsyncId(scheduler: AnimationFrameScheduler, id?: TimerHandle, delay: number = 0): TimerHandle | undefined {\n // If delay exists and is greater than 0, or if the delay is null (the\n // action wasn't rescheduled) but was originally scheduled as an async\n // action, then recycle as an async action.\n if (delay != null ? delay > 0 : this.delay > 0) {\n return super.recycleAsyncId(scheduler, id, delay);\n }\n // If the scheduler queue has no remaining actions with the same async id,\n // cancel the requested animation frame and set the scheduled flag to\n // undefined so the next AnimationFrameAction will request its own.\n const { actions } = scheduler;\n if (id != null && actions[actions.length - 1]?.id !== id) {\n animationFrameProvider.cancelAnimationFrame(id as number);\n scheduler._scheduled = undefined;\n }\n // Return undefined so the action knows to request a new async id if it's rescheduled.\n return undefined;\n }\n}\n", "import { AsyncAction } from './AsyncAction';\nimport { AsyncScheduler } from './AsyncScheduler';\n\nexport class AnimationFrameScheduler extends AsyncScheduler {\n public flush(action?: AsyncAction): void {\n this._active = true;\n // The async id that effects a call to flush is stored in _scheduled.\n // Before executing an action, it's necessary to check the action's async\n // id to determine whether it's supposed to be executed in the current\n // flush.\n // Previous implementations of this method used a count to determine this,\n // but that was unsound, as actions that are unsubscribed - i.e. cancelled -\n // are removed from the actions array and that can shift actions that are\n // scheduled to be executed in a subsequent flush into positions at which\n // they are executed within the current flush.\n const flushId = this._scheduled;\n this._scheduled = undefined;\n\n const { actions } = this;\n let error: any;\n action = action || actions.shift()!;\n\n do {\n if ((error = action.execute(action.state, action.delay))) {\n break;\n }\n } while ((action = actions[0]) && action.id === flushId && actions.shift());\n\n this._active = false;\n\n if (error) {\n while ((action = actions[0]) && action.id === flushId && actions.shift()) {\n action.unsubscribe();\n }\n throw error;\n }\n }\n}\n", "import { AnimationFrameAction } from './AnimationFrameAction';\nimport { AnimationFrameScheduler } from './AnimationFrameScheduler';\n\n/**\n *\n * Animation Frame Scheduler\n *\n * Perform task when `window.requestAnimationFrame` would fire\n *\n * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler\n * behaviour.\n *\n * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.\n * It makes sure scheduled task will happen just before next browser content repaint,\n * thus performing animations as efficiently as possible.\n *\n * ## Example\n * Schedule div height animation\n * ```ts\n * // html:
\n * import { animationFrameScheduler } from 'rxjs';\n *\n * const div = document.querySelector('div');\n *\n * animationFrameScheduler.schedule(function(height) {\n * div.style.height = height + \"px\";\n *\n * this.schedule(height + 1); // `this` references currently executing Action,\n * // which we reschedule with new state\n * }, 0, 0);\n *\n * // You will see a div element growing in height\n * ```\n */\n\nexport const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);\n\n/**\n * @deprecated Renamed to {@link animationFrameScheduler}. Will be removed in v8.\n */\nexport const animationFrame = animationFrameScheduler;\n", "import { Observable } from '../Observable';\nimport { SchedulerLike } from '../types';\n\n/**\n * A simple Observable that emits no items to the Observer and immediately\n * emits a complete notification.\n *\n * Just emits 'complete', and nothing else.\n *\n * ![](empty.png)\n *\n * A simple Observable that only emits the complete notification. It can be used\n * for composing with other Observables, such as in a {@link mergeMap}.\n *\n * ## Examples\n *\n * Log complete notification\n *\n * ```ts\n * import { EMPTY } from 'rxjs';\n *\n * EMPTY.subscribe({\n * next: () => console.log('Next'),\n * complete: () => console.log('Complete!')\n * });\n *\n * // Outputs\n * // Complete!\n * ```\n *\n * Emit the number 7, then complete\n *\n * ```ts\n * import { EMPTY, startWith } from 'rxjs';\n *\n * const result = EMPTY.pipe(startWith(7));\n * result.subscribe(x => console.log(x));\n *\n * // Outputs\n * // 7\n * ```\n *\n * Map and flatten only odd numbers to the sequence `'a'`, `'b'`, `'c'`\n *\n * ```ts\n * import { interval, mergeMap, of, EMPTY } from 'rxjs';\n *\n * const interval$ = interval(1000);\n * const result = interval$.pipe(\n * mergeMap(x => x % 2 === 1 ? of('a', 'b', 'c') : EMPTY),\n * );\n * result.subscribe(x => console.log(x));\n *\n * // Results in the following to the console:\n * // x is equal to the count on the interval, e.g. (0, 1, 2, 3, ...)\n * // x will occur every 1000ms\n * // if x % 2 is equal to 1, print a, b, c (each on its own)\n * // if x % 2 is not equal to 1, nothing will be output\n * ```\n *\n * @see {@link Observable}\n * @see {@link NEVER}\n * @see {@link of}\n * @see {@link throwError}\n */\nexport const EMPTY = new Observable((subscriber) => subscriber.complete());\n\n/**\n * @param scheduler A {@link SchedulerLike} to use for scheduling\n * the emission of the complete notification.\n * @deprecated Replaced with the {@link EMPTY} constant or {@link scheduled} (e.g. `scheduled([], scheduler)`). Will be removed in v8.\n */\nexport function empty(scheduler?: SchedulerLike) {\n return scheduler ? emptyScheduled(scheduler) : EMPTY;\n}\n\nfunction emptyScheduled(scheduler: SchedulerLike) {\n return new Observable((subscriber) => scheduler.schedule(() => subscriber.complete()));\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport function isScheduler(value: any): value is SchedulerLike {\n return value && isFunction(value.schedule);\n}\n", "import { SchedulerLike } from '../types';\nimport { isFunction } from './isFunction';\nimport { isScheduler } from './isScheduler';\n\nfunction last(arr: T[]): T | undefined {\n return arr[arr.length - 1];\n}\n\nexport function popResultSelector(args: any[]): ((...args: unknown[]) => unknown) | undefined {\n return isFunction(last(args)) ? args.pop() : undefined;\n}\n\nexport function popScheduler(args: any[]): SchedulerLike | undefined {\n return isScheduler(last(args)) ? args.pop() : undefined;\n}\n\nexport function popNumber(args: any[], defaultValue: number): number {\n return typeof last(args) === 'number' ? args.pop()! : defaultValue;\n}\n", "export const isArrayLike = ((x: any): x is ArrayLike => x && typeof x.length === 'number' && typeof x !== 'function');", "import { isFunction } from \"./isFunction\";\n\n/**\n * Tests to see if the object is \"thennable\".\n * @param value the object to test\n */\nexport function isPromise(value: any): value is PromiseLike {\n return isFunction(value?.then);\n}\n", "import { InteropObservable } from '../types';\nimport { observable as Symbol_observable } from '../symbol/observable';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being Observable (but not necessary an Rx Observable) */\nexport function isInteropObservable(input: any): input is InteropObservable {\n return isFunction(input[Symbol_observable]);\n}\n", "import { isFunction } from './isFunction';\n\nexport function isAsyncIterable(obj: any): obj is AsyncIterable {\n return Symbol.asyncIterator && isFunction(obj?.[Symbol.asyncIterator]);\n}\n", "/**\n * Creates the TypeError to throw if an invalid object is passed to `from` or `scheduled`.\n * @param input The object that was passed.\n */\nexport function createInvalidObservableTypeError(input: any) {\n // TODO: We should create error codes that can be looked up, so this can be less verbose.\n return new TypeError(\n `You provided ${\n input !== null && typeof input === 'object' ? 'an invalid object' : `'${input}'`\n } where a stream was expected. You can provide an Observable, Promise, ReadableStream, Array, AsyncIterable, or Iterable.`\n );\n}\n", "export function getSymbolIterator(): symbol {\n if (typeof Symbol !== 'function' || !Symbol.iterator) {\n return '@@iterator' as any;\n }\n\n return Symbol.iterator;\n}\n\nexport const iterator = getSymbolIterator();\n", "import { iterator as Symbol_iterator } from '../symbol/iterator';\nimport { isFunction } from './isFunction';\n\n/** Identifies an input as being an Iterable */\nexport function isIterable(input: any): input is Iterable {\n return isFunction(input?.[Symbol_iterator]);\n}\n", "import { ReadableStreamLike } from '../types';\nimport { isFunction } from './isFunction';\n\nexport async function* readableStreamLikeToAsyncGenerator(readableStream: ReadableStreamLike): AsyncGenerator {\n const reader = readableStream.getReader();\n try {\n while (true) {\n const { value, done } = await reader.read();\n if (done) {\n return;\n }\n yield value!;\n }\n } finally {\n reader.releaseLock();\n }\n}\n\nexport function isReadableStreamLike(obj: any): obj is ReadableStreamLike {\n // We don't want to use instanceof checks because they would return\n // false for instances from another Realm, like an