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Tips

Tips are a collection of answers to user questions in GitHub Discussions and our Discord organized by topic.

Prompt

Allow Any Text Input When Choices Are Displayed

By default, arg is in "strict" mode which prevents submitting the prompt if your text input doesn't match a choice in the list. You can disable this by passing strict: false to arg:

// Name: Strict Mode Demo

import "@johnlindquist/kit"

let fruit = await arg({
    placeholder: "Select a fruit",
    hint: "Type 'Grape' and hit enter",
    strict: false
}, ["Apple", "Banana", "Cherry"])

await div(md(fruit))

Select a Choice with a Single Keystroke

Surround a letter in square brackets to make it a shortcut for a choice:

// Name: Single Keystroke Demo

import "@johnlindquist/kit"

let choice = await arg({
  placeholder: "Choose a color",
  choices: [
    {name: "[R]ed", value: "red"},
    {name: "[G]reen", value: "green"},
    {name: "[B]lue", value: "blue"},
  ],
})

await div(md(`You chose ${choice}`))

Adjust the CSS of Choices

You can pass a css object to arg to adjust the CSS of the choices, then use the className property of each choice to apply a class to that choice:

import "@johnlindquist/kit"

let choice = await arg({
  css: `
.light-purple {
  background-color: #c8a2c8;
}  
.medium-purple {
  background-color: #967bb6;
}
.dark-purple {
  background-color: #5d4777;
}

.focused {
  box-shadow: inset .5rem 0 0 0 #ffffffee;
}
  `,
  placeholder: "Choose a shade of purple",
  choices: [
    { name: "[L]ight Purple", value: "light-purple", className: "light-purple", focusedClassName: "focused" },
    { name: "[M]edium Purple", value: "medium-purple", className: "medium-purple", focusedClassName: "focused" },
    { name: "[D]ark Purple", value: "dark-purple", className: "dark-purple", focusedClassName: "focused" },
  ],
})

await div(md(`You chose ${choice}`))

Progress Panel

// Name: Progress Panel

import "@johnlindquist/kit"

let first = ""
let second = ""
let third = ""
let progressPanel = () =>
  md(`# Progress: 
- ${first || "Waiting first value"}
- ${second || "Waiting second value"}
- ${third || "Waiting third value"}
`)

first = await arg("Enter the first value", progressPanel)
second = await arg("Enter the second value", progressPanel)
third = await arg("Enter the third value", progressPanel)

await div(
  md(`# You entered:
- ${first}
- ${second}
- ${third}
`)
)

Force a User to Pick an Option

// Name: Force a User to Pick an Option

import "@johnlindquist/kit"

let animals = ["dog", "cat", "rabbit", "horse", "elephant"]
let secondsRemaining = 3
let getHint = secondsRemaining => `Hurry! You only have ${secondsRemaining} seconds to choose an animal...`

let animal = ""

animal = await arg(
  {
    hint: getHint(secondsRemaining),
    onInit: async () => {
      while (secondsRemaining > 0 && !animal) {
        setHint(getHint(secondsRemaining))
        await wait(1000)
        secondsRemaining--
      }

      if (!animal) exit()
    },
  },
  animals
)

await div(md(`# Phew! You made it! You chose ${animal}`))

Clipboard

Format Latest Clipboard Item

import "@johnlindquist/kit"

let text = await paste()
let newText = text.replace("a", "b")
await setSelectedText(newText)

Shortcuts

Return to the Main Script on Escape

await div({
  html: md(`# Hello`),
  shortcuts: [
    {
      key: "escape",
      onPress: async () => {
        await mainScript()
      },
    },
  ],
})

Data

Edit the Keys and Values of an Object

import "@johnlindquist/kit"

let data = {
  name: "John",
  age: 42,
  location: "USA",
}

let result = await fields(
  Object.entries(data).map(([key, value]) => ({
    name: key,
    label: key,
    value: String(value),
  }))
)

let newData = Object.entries(data).map(([key], i) => ({
  [key]: result[i],
}))

inspect(newData)

Prompt

Rewind Prompts

import { Shortcut } from "@johnlindquist/kit"

let currentStep = 0
let direction = 1

let shortcuts: Shortcut[] = [
  {
    key: "escape",
    onPress: async () => {
      submit("")
    },
  },
]

let step1 = async () =>
  await arg({
    placeholder: "one",
    shortcuts,
  })

let step2 = async () =>
  await arg({
    placeholder: "two",
    shortcuts,
  })

let step3 = async () =>
  await arg({
    placeholder: "three",
    shortcuts,
  })

let steps = [
  { prompt: step1, value: "" },
  { prompt: step2, value: "" },
  { prompt: step3, value: "" },
]

while (currentStep < steps.length) {
  let step = steps[currentStep]
  step.value = await step.prompt()
  direction = step.value ? 1 : -1
  currentStep += direction
  if (currentStep < 0) {
    exit() // Pressing escape on the first prompt will exit the script
  }
}

inspect(steps)

Audio

Cancel Audio with Keyboard Shortcut

import "@johnlindquist/kit"

// Start saying long thing
say(`I have so much to say I'm just going to keep talking until someone shuts me up`)

registerShortcut("opt x", () => {
  say("") //will cancel
  process.exit() // you need to exit or else the shortcuts will keep the script active
})

registerShortcut("opt y", () => {
  say("You're done", {
    name: "Alice",
    rate: 0.5,
    pitch: 2,
  })
  process.exit()
})

Desktop

Get Active App on Mac

// MAC ONLY!
import "@johnlindquist/kit"

// Always hide immmediately if you're not going to show a prompt
await hide()

// Note: This uses "https://www.npmjs.com/package/@johnlindquist/mac-frontmost" inside Kit.app,
// but you can import that package directly (or another similar package) if you prefer
let info = await getActiveAppInfo()
if (info.bundleIdentifier === "com.google.Chrome"){
  await keyboard.pressKey(Key.Meta, Key.T)
  await keyboard.releaseKey(Key.Meta, Key.T)
}