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Vue for CLIs. Build your CLI output using components.

Temir provides the same component-based UI building experience that Vue offers in the browser, but for command-line apps.

It uses Yoga to build Flexbox layouts in the terminal, so most CSS-like props are available in Temir as well. If you are already familiar with Vue, you already know Temir.

Since Temir is a Vue renderer, it means that most of the features of Vue are supported. Head over to Vue website for documentation on how to use it. Only Temir's methods will be documented in this readme.

---

Install

npm install @temir/core

Usage

<script lang="ts" setup>
import { ref } from '@vue/runtime-core'
import { TBox, TText } from '@temir/core'
const counter = ref(0)
setInterval(() => {
  counter.value++
}, 100)
</script>

<template>
  <TBox>
    <TText color="green">
      {{ counter }} tests passed
    </TText>
  </TBox>
</template>

HMR Support

Contents

• Getting Started

• Components

  • <Text>
  • <Box>
  • <Newline>
  • <Spacer>
  • <Link>
  • <Tab>
  • <Spinner>
  • <SelectInput>
  • 💻 Still working and welcome to contribute.

• Examples

  • hi-temir
    
  • borders
    
  • table
    
  • temir-link
    
  • temir-spinner
    
  • temir-tab
    
  • temir-select-input
    
  • Vitest
    

Getting Started

Use @temir/cli to quickly scaffold a new Temir-based CLI.

mkdir my-temir-cli

cd my-temir-cli

touch main.ts

npm install @temir/cli

# Dev

temir main.ts

# Build

temir build main.ts

You can also check it out this example to get started.Feel free to play around with the example and fork this repl at repl.it sandbox

Temir uses Yoga - a Flexbox layout engine to build great user interfaces for your CLIs using familiar CSS-like props you've used when building apps for the browser. It's important to remember that each element is a Flexbox container. Think of it as if each

in the browser had display: flex. See built-in component below for documentation on how to use Flexbox layouts in Ink. Note that all text must be wrapped in a component.

Components

<Text>

This component can display text, and change its style to make it bold, underline, italic or strikethrough.

<TText color="green">
  I am green
</TText>

<TText color="black" background-color="white">
  I am black on white
</TText>

<TText color="white">
  I am white
</TText>

<TText bold>
  I am bold
</TText>

<TText italic>
  I am italic
</TText>

<TText underline>
  I am underline
</TText>

<TText strikethrough>
  I am strikethrough
</TText>

<TText inverse>
  I am inversed
</TText>

Note: <Text> allows only text nodes and nested <Text> components inside of it. For example, <Box> component can't be used inside <Text>.

color

Type: string

Change text color. Temir uses chalk under the hood, so all its functionality is supported.

<TBox flex-direction="column">
  <TText color="green">
    Green
  </TText>
  <TText color="blue">
    Blue
  </TText>
  <TText color="red">
    Red
  </TText>
</TBox>

backgroundColor

Type: string

Same as color above, but for background.

<TBox flex-direction="column">
  <TText background-color="green">
    Green
  </TText>
  <TText background-color="blue">
    Blue
  </TText>
  <TText background-color="red">
    Red
  </TText>
</TBox>

dimColor

Type: boolean
Default: false

Dim the color (emit a small amount of light).

<Text color="red" dimColor>
	Dimmed Red
</Text>

bold

Type: boolean
Default: false

Make the text bold.

italic

Type: boolean
Default: false

Make the text italic.

underline

Type: boolean
Default: false

Make the text underlined.

strikethrough

Type: boolean
Default: false

Make the text crossed with a line.

inverse

Type: boolean
Default: false

Inverse background and foreground colors.

<TText color="yellow" inverse>
  Inversed Yellow
</TText>

wrap

Type: string
Allowed values: wrap truncate truncate-start truncate-middle truncate-end
Default: wrap

This property tells Temir to wrap or truncate text if its width is larger than container. If wrap is passed (by default), Temir will wrap text and split it into multiple lines. If truncate-* is passed, Temir will truncate text instead, which will result in one line of text with the rest cut off.

<template>
  <TBox :width="7">
    <TText>Hello World</TText>
  </TBox>
  //=> 'Hello\nWorld'

  // `truncate` is an alias to `truncate-end`
  <TBox :width="7">
    <TText wrap="truncate">
      Hello World
    </TText>
  </TBox>
  //=> 'Hello…'

  <TBox :width="7">
    <TText wrap="truncate-middle">
      Hello World
    </TText>
  </TBox>
  //=> 'He…ld'

  <TBox :width="7">
    <TText wrap="truncate-start">
      Hello World
    </TText>
  </TBox>
  //=> '…World'
</template>

<Box>

<Box> is an essential Temir component to build your layout. It's like <div style="display: flex"> in the browser.

<script>
import { TBox, TText } from '@temir/core'
</script>

<template>
  <TBox :margin="2">
    <TText>This is a box with margin</TText>
  </TBox>
</template>

Dimensions

width

Type: number string

Width of the element in spaces. You can also set it in percent, which will calculate the width based on the width of parent element.

<template>
  <TBox :width="4">
    <TText>X</TText>
  </TBox>

  //=> 'X   '
</template>

<template>
  <TBox :width="10">
    <TBox width="50%">
      <TText>X</TText>
    </TBox>

    <TText>
      Y
    </TText>
  </TBox>

  //=> 'X    Y'
</template>

height

Type: number string

Height of the element in lines (rows). You can also set it in percent, which will calculate the height based on the height of parent element.

<template>
  <TBox :height="4">
    <TText>X</TText>
  </TBox>
  //=> 'X\n\n\n'
</template>

<template>
  <TBox :height="6" flex-direction="column">
    <TBox height="50%">
      <TText>X</TText>
    </TBox>

    <TText>
      Y
    </TText>
  </TBox>
  //=> 'X\n\n\nY\n\n'
</template>

minWidth

Type: number

Sets a minimum width of the element. Percentages aren't supported yet, see facebook/yoga#872.

minHeight

Type: number

Sets a minimum height of the element. Percentages aren't supported yet, see facebook/yoga#872.

Padding

paddingTop

Type: number
Default: 0

Top padding.

paddingBottom

Type: number
Default: 0

Bottom padding.

paddingLeft

Type: number
Default: 0

Left padding.

paddingRight

Type: number
Default: 0

Right padding.

paddingX

Type: number
Default: 0

Horizontal padding. Equivalent to setting paddingLeft and paddingRight.

paddingY

Type: number
Default: 0

Vertical padding. Equivalent to setting paddingTop and paddingBottom.

padding

Type: number
Default: 0

Padding on all sides. Equivalent to setting paddingTop, paddingBottom, paddingLeft and paddingRight.

<template>
  <TBox :padding-top="2">
    <TText>Top</TText>
  </TBox>

  <TBox :padding-bottom="2">
    <TText>Bottom</TText>
  </TBox>

  <TBox :padding-left="2">
    <TText>Left</TText>
  </TBox>

  <TBox :padding-right="2">
    <TText>Right</TText>
  </TBox>

  <TBox :padding-x="2">
    <TText>Left and right</TText>
  </TBox>

  <TBox :padding-y="2">
    <TText>Top and bottom</TText>
  </TBox>

  <TBox :padding="2">
    <TText>Top, bottom, left and right</TText>
  </TBox>
</template>

Margin

marginTop

Type: number
Default: 0

Top margin.

marginBottom

Type: number
Default: 0

Bottom margin.

marginLeft

Type: number
Default: 0

Left margin.

marginRight

Type: number
Default: 0

Right margin.

marginX

Type: number
Default: 0

Horizontal margin. Equivalent to setting marginLeft and marginRight.

marginY

Type: number
Default: 0

Vertical margin. Equivalent to setting marginTop and marginBottom.

margin

Type: number
Default: 0

Margin on all sides. Equivalent to setting marginTop, marginBottom, marginLeft and marginRight.

<template>
  <TBox :margin-top="2">
    <TText>Top</TText>
  </TBox>

  <TBox :margin-bottom="2">
    <TText>Bottom</TText>
  </TBox>

  <TBox :margin-left="2">
    <TText>Left</TText>
  </TBox>

  <TBox :margin-right="2">
    <TText>Right</TText>
  </TBox>

  <TBox :margin-x="2">
    <TText>Left and right</TText>
  </TBox>

  <TBox :margin-y="2">
    <TText>Top and bottom</TText>
  </TBox>

  <TBox :margin="2">
    <TText>Top, bottom, left and right</TText>
  </TBox>
</template>

Flex

flexGrow

Type: number
Default: 0

See flex-grow.

<template>
  <TBox>
    <TText>Label:</TText>
    <TBox :flex-grow="1">
      <TText>Fills all remaining space</TText>
    </TBox>
  </TBox>
</template>

flexShrink

Type: number
Default: 1

See flex-shrink.

<template>
  <TBox :width="20">
    <TBox :flex-shrink="2" :width="10">
      <TText>Will be 1/4</TText>
    </TBox>

    <TBox :width="10">
      <TText>Will be 3/4</TText>
    </TBox>
  </TBox>
</template>

flexBasis

Type: number string

See flex-basis.

<template>
  <TBox :width="6">
    <TBox :flex-basis="3">
      <TText>X</TText>
    </TBox>

    <TText>
      Y
    </TText>
  </TBox>
  //=> 'X  Y'
</template>

<template>
  <TBox :width="6">
    <TBox flex-basis="50%">
      <TText>X</TText>
    </TBox>

    <TText>
      Y
    </TText>
  </TBox>
  //=> 'X  Y'
</template>

flexDirection

Type: string
Allowed values: row row-reverse column column-reverse

See flex-direction.

<template>
  <TBox>
    <TBox :margin-right="1">
      <TText>X</TText>
    </TBox>

    <TText>
      Y
    </TText>
  </TBox>
  // X Y

  <TBox flex-direction="row-reverse">
    <TText>X</TText>
    <TBox :margin-right="1">
      <TText>Y</TText>
    </TBox>
  </TBox>
  // Y X

  <TBox flex-direction="column">
    <TText>X</TText>
    <TText>Y</TText>
  </TBox>
  // X
  // Y

  <TBox flex-direction="column-reverse">
    <TText>X</TText>
    <TText>Y</TText>
  </TBox>
  // Y
  // X
</template>

alignItems

Type: string
Allowed values: flex-start center flex-end

See align-items.

<template>
  <TBox align-items="flex-start">
    <TBox :margin-right="1">
      <TText>X</TText>
    </TBox>

    <TText>
      A
      <TNewline />
      B
      <TNewline />
      C
    </TText>
  </TBox>
  // X A
  //   B
  //   C

  <TBox align-items="center">
    <TBox margin-right="1">
      <TText>X</TText>
    </TBox>

    <TText>
      A
      <TNewline />
      B
      <TNewline />
      C
    </TText>
  </TBox>
  //   A
  // X B
  //   C

  <TBox align-items="flex-end">
    <TBox margin-right="1">
      <TText>X</TText>
    </TBox>

    <TText>
      A
      <TNewline />
      B
      <TNewline />
      C
    </TText>
  </TBox>
  //   A
  //   B
  // X C
</template>

alignSelf

Type: string
Default: auto
Allowed values: auto flex-start center flex-end

See align-self.

<template>
  <TBox :height="3">
    <TBox align-self="flex-start">
      <TText>X</TText>
    </TBox>
  </TBox>
  // X
  //
  //

  <TBox :height="3">
    <TBox align-self="center">
      <TText>X</TText>
    </TBox>
  </TBox>
  //
  // X
  //

  <TBox :height="3">
    <TBox align-self="flex-end">
      <TText>X</TText>
    </TBox>
  </TBox>
  //
  //
  // X
</template>

justifyContent

Type: string
Allowed values: flex-start center flex-end space-between space-around

See justify-content.

<template>
  <TBox justify-content="flex-start">
    <TText>X</TText>
  </TBox>
  // [X      ]

  <TBox justify-content="center">
    <TText>X</TText>
  </TBox>
  // [   X   ]

  <TBox justify-content="flex-end">
    <TText>X</TText>
  </TBox>
  // [      X]

  <TBox justify-content="space-between">
    <TText>X</TText>
    <TText>Y</TText>
  </TBox>
  // [X      Y]

  <TBox justify-content="space-around">
    <TText>X</TText>
    <TText>Y</TText>
  </TBox>
  // [  X   Y  ]
</template>

Visibility

display

Type: string
Allowed values: flex none
Default: flex

Set this property to none to hide the element.

Borders

borderStyle

Type: string
Allowed values: single double round bold singleDouble doubleSingle classic

Add a border with a specified style. If borderStyle is undefined (which it is by default), no border will be added. Temir uses border styles from cli-boxes module.

<template>
  <TBox flex-direction="column">
    <TBox>
      <TBox border-style="single" :margin-right="2">
        <TText>single</TText>
      </TBox>

      <TBox border-style="double" :margin-right="2">
        <TText>double</TText>
      </TBox>

      <TBox border-style="round" :margin-right="2">
        <TText>round</TText>
      </TBox>

      <TBox border-style="bold">
        <TText>bold</TText>
      </TBox>
    </TBox>

    <TBox :margin-top="1">
      <TBox border-style="singleDouble" :margin-right="2">
        <TText>singleDouble</TText>
      </TBox>

      <TBox border-style="doubleSingle" :margin-right="2">
        <TText>doubleSingle</TText>
      </TBox>

      <TBox border-style="classic">
        <TText>classic</TText>
      </TBox>
    </TBox>
  </TBox>
</template>

borderColor

Type: string

Change border color. Accepts the same values as color in <Text> component.

<template>
  <TBox border-style="round" border-color="green">
    <TText>Green Rounded Box</TText>
  </TBox>
</template>

<Newline>

Adds one or more newline (\n) characters. Must be used within <Text> components.

count

Type: number
Default: 1

Number of newlines to insert.

<script>
import { TBox, TNewline, TText } from '@temir/core'
</script>

<template>
  <TBox>
    <TText>
      <TText color="green">
        Hello
      </TText>
      <TNewline />
      <TText color="red">
        World
      </TText>
    </TText>
  </TBox>
</template>

Output:

Hello
World

<Spacer>

A flexible space that expands along the major axis of its containing layout. It's useful as a shortcut for filling all the available spaces between elements.

For example, using <Spacer> in a <Box> with default flex direction (row) will position "Left" on the left side and will push "Right" to the right side.

<script lang="ts" setup>
import { TBox, TSpacer, TText } from '@temir/core'
</script>

<template>
  <TBox>
    <TText>Left</TText>
    <TSpacer />
    <TText>Right</TText>
  </TBox>
</template>

In a vertical flex direction (column), it will position "Top" to the top of the container and push "Bottom" to the bottom of it. Note, that container needs to be tall to enough to see this in effect.

<script lang="ts" setup>
import { TBox, TSpacer, TText } from '@temir/core'
</script>

<template>
  <TBox flex-direction="column" :height="10">
    <TText>Top</TText>
    <TSpacer />
    <TText>Bottom</TText>
  </TBox>
</template>

Credits

This project is highly inspired by ink

vite-node made the HMR support easily