feat: implement MetroConfigHelper

.editorconfig

@@ -0,0 +1,12 @@
+
+root = true
+
+[*]
+end_of_line = crlf
+charset = utf-8
+
+[{src,scripts}/**.{ts,json,js,tsx}]
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 4

.github/CONTRIBUTING.md

@@ -0,0 +1,3 @@
+# Example Contributing Guidelines
+
+This is an example of GitHub's contributing guidelines file. Check out GitHub's [CONTRIBUTING.md help center article](https://help.github.com/articles/setting-guidelines-for-repository-contributors/) for more information.

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,11 @@
+* **I'm submitting a ...**
+[ ] bug report
+[ ] feature request
+[ ] question about the decisions made in the repository
+[ ] question about how to use this project
+
+* **Summary**
+
+
+
+* **Other information** (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. StackOverflow, personal fork, etc.)

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,13 @@
+* **What kind of change does this PR introduce?** (Bug fix, feature, docs update, ...)
+
+
+
+* **What is the current behavior?** (You can also link to an open issue here)
+
+
+
+* **What is the new behavior (if this is a feature change)?**
+
+
+
+* **Other information**:

.gitignore

@@ -0,0 +1,13 @@
+node_modules
+build
+test
+src/**.js
+.idea/*
+
+coverage
+.nyc_output
+*.log
+
+yarn.lock
+
+.vscode/

.npmignore

@@ -0,0 +1,14 @@
+src
+test
+tsconfig.json
+tsconfig.module.json
+tslint.json
+.travis.yml
+.github
+.prettierignore
+.vscode
+build/docs
+**/*.spec.*
+coverage
+.nyc_output
+*.log

.prettierignore

@@ -0,0 +1,2 @@
+# package.json is formatted by package managers, so we ignore it here
+package.json

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Flávio Lisbôa
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,84 @@
+# react-native-monorepo-helper
+
+A helper library that makes React Native development in monorepo projects easier.
+
+If you're having problems with Metro/Haste not finding your files and/or 
+dependencies, or that your `nohoist` config is becoming a bit unwieldly,
+this tool can help you out! It'll provide a `CustomResolver` and setup 
+project roots and watch folders for your `rn-cli.config.js`. TypeScript
+configuration automation is also optionally provided. 
+
+P.S.: The tool itself is developed in TypeScript, so no need for a `@types`
+package, fellow TypeScript programmers! :)
+
+
+## Installation
+
+For NPM users:
+
+```sh
+npm install --save-dev react-native-monorepo-helper
+```
+
+For Yarn users:
+
+```sh
+yarn add --dev react-native-monorepo-helper
+```
+
+## Usage
+
+Considering a project with a structure similar to the following:
+
+```
+myproj/
+├── package.json
+├── node_modules/
+└── packages/
+    ├── myproj-react-native-app/
+    ├── node_modules/
+    │   ├── android/
+    │   ├── ios/
+    │   ├── index.js
+    │   ├── package.json
+    │   └── rn-cli.config.js
+    └── myproj-lib
+        ├── index.js
+        └── package.json
+```
+
+First, be sure to `nohoist` React Native and any dependency that needs to be
+`react-native link`ed. You can either use Lerna or Yarn Workspaces to configure
+your monorepo project.
+
+In your `rn-cli.config.js`:
+
+```js
+const projectRoot = __dirname;
+const metroConfig = require('react-native-monorepo-helper').default;
+
+module.exports = metroConfig(projectRoot);
+```
+
+Optionally, you can use a configuration helper, and tweak the options for your
+needs, e.g. setting up TypeScript:
+
+```js
+const projectRoot = __dirname;
+const metroConfigHelper = require('react-native-monorepo-helper') 
+    .metroConfigHelper;
+
+module.exports = metroConfigHelper(projectRoot)
+    .typeScript(true)
+    .watchFolder("external/folder/a", "external/folder/b")
+    .defaultConfig({
+        // Documentation: https://facebook.github.io/metro/docs/en/configuration
+        port: 9091
+    })
+    .generate();
+```
+
+
+## License
+
+MIT.