CodeBlock

A terminal-style code block with syntax-friendly display, line numbers, and a copy button.

CodeBlock

Demo

typescript

1const x = 1;

typescript

1function greet(name: string) {\n  return `Hello ${name}`;\n}

bash

docker compose up -d

<CodeBlock code="const x = 1;" language="typescript" />
<CodeBlock code="function greet(name: string) {\n  return `Hello ${name}`;\n}" language="typescript" color="success" />
<CodeBlock code="docker compose up -d" language="bash" color="secondary" :showLines="false" />

Props

code

Source code string to display.

<CodeBlock code="const x = 1;" language="typescript" />

language

Language label shown as a tag in the header.

javascript

1console.log("hi")

bash

1npm run dev

<CodeBlock code='console.log("hi")' language="javascript" />
<CodeBlock code="npm run dev" language="bash" />

color

Border accent color of the code block.

ts

1const x = 1;

ts

1const x = 1;

ts

1const x = 1;

<CodeBlock code="const x = 1;" language="ts" color="primary" />
<CodeBlock code="const x = 1;" language="ts" color="success" />
<CodeBlock code="const x = 1;" language="ts" color="danger" />

showLines

Toggle line numbers on the left gutter.

ts

1line 1\nline 2\nline 3

ts

line 1\nline 2\nline 3

<CodeBlock code="line 1\nline 2\nline 3" language="ts" showLines />
<CodeBlock code="line 1\nline 2\nline 3" language="ts" :showLines="false" />

maxHeight

Max height before the block becomes scrollable.

<CodeBlock code="..." language="ts" maxHeight="200px" />

formatter

Optional function to format code before syntax highlighting. Useful for auto-formatting with Prettier.

<script setup>
import { usePrettierFormatter } from '@dowardev/herdrate-vue'

const formatter = usePrettierFormatter()
</script>

<template>
  <CodeBlock code="const  x  =   1" language="typescript" :formatter="formatter" />
</template>

The formatter receives (code: string, language: string) and can return a string or Promise<string>.

Auto-formateo con usePrettierFormatter

usePrettierFormatter() retorna una función formateadora que usa Prettier para formatear código según el lenguaje.

Primero instala Prettier (opcional, necesario solo si usas el formateador):

npm i -D prettier

Lenguajes soportados

Lenguaje (language)	Parser Prettier	Plugin requerido	Built-in
javascript / js / jsx / mjs / cjs	babel	—	✅
typescript / ts / tsx / mts / cts	typescript	—	✅
json / jsonc / json5	json / jsonc / json5	—	✅
css / scss / less	css / scss / less	—	✅
html / vue / angular	html	—	✅
markdown / md / mdx	markdown	—	✅
yaml / yml	yaml	—	✅
graphql / gql	graphql	—	✅
flow	flow	—	✅
sql	—	prettier-plugin-sql	❌
python	—	@prettier/plugin-python	❌
ruby	—	@prettier/plugin-ruby	❌
java	—	prettier-plugin-java	❌
rust	—	prettier-plugin-rust	❌
toml	—	prettier-plugin-toml	❌
bash / sh / shell / zsh	—	prettier-plugin-sh	❌
csharp / cs	—	prettier-plugin-csharp	❌
xml	—	@prettier/plugin-xml	❌

Los lenguajes marcados con ❌ requieren instalar el plugin Prettier correspondiente:

npm i -D prettier-plugin-sql prettier-plugin-java prettier-plugin-rust

El composable detecta automáticamente los plugins instalados. Si un parser no está disponible, devuelve el código original sin formatear.

API

Prop	Type	Default	Description
code	string	''	Source code to display
language	string	''	Language label shown as tag
color	'primary' | 'secondary' | 'tertiary' | 'success' | 'warning' | 'danger' | 'light' | 'medium' | 'dark'	DEFAULT_COLOR	Border accent color
showLines	boolean	true	Show line numbers
maxHeight	string	'none'	Max height before scroll
formatter	(code: string, lang: string) => Promise\<string\> | string	—	Optional formatter function

Slots

Slot	Description
default	Alternative to code prop

Tokens usados

--font-mono, --bg, --bg-panel, --border, --text, --text-muted, --color-*