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Nuxt MDC

Nuxt MDC

npm version npm downloads License Nuxt

MDC supercharges regular Markdown to write documents interacting deeply with any Vue component. MDC stands for MarkDown Components.

Features

  • Mix Markdown syntax with HTML tags or Vue components
  • Unwrap any generated content (ex: <p> added by each Markdown paragraph)
  • Use Vue components with named slots
  • Support inline components
  • Add attributes and classes to inline HTML tags

Learn more about the MDC syntax on https://content.nuxtjs.org/guide/writing/mdc

Install

# Using npm
npm install --save-dev @nuxtjs/mdc

# Using yarn
yarn add --dev @nuxtjs/mdc

# Using pnpm
pnpm add --dev @nuxtjs/mdc

Then, add @nuxtjs/mdc to the modules section of your nuxt.config.ts

export default defineNuxtConfig({
  modules: ['@nuxtjs/mdc']
})

That's it! You can start writing and rendering markdown files ✨

Rendering

@nuxtjs/mdc exposes three components to render markdown files.

<MDC>

Using <MDC>, you can parse and render markdown contents right inside your components/pages. This component takes raw markdown, parses it using the parseMarkdown function, and then renders it with <MDCRenderer>.

<script setup lang="ts">
const md = `
::alert
Hello MDC
::
`
</script>

<template>
  <MDC :value="md" tag="article" />
</template>

Note that ::alert will use the components/global/Alert.vue component.

<MDCRenderer>

This component will take the result of parseMarkdown function and render the contents. For example, this is an extended version of the sample code in the Browser section which uses MDCRenderer to render the parsed markdown.

<script setup lang="ts">
import { parseMarkdown } from '@nuxtjs/mdc/runtime'

const ast = await useAsyncData('markdown', () => parseMarkdown('::alert\nMissing markdown input\n::'))
</script>

<template>
  <MDCRenderer :body="ast.body" :data="ast.data" />
</template>

<MDCSlot>

This component is a replacement for Vue's <slot/> component, specifically designed for MDC. Using this component, you can render a component's children while removing one or multiple wrapping elements. In the below example, the Alert component receives text and its default slot (children). But if the component renders this slot using the normal <slot/>, it will render a <p> element around the text.

::alert
This is an Alert
::
<template>
  <div class="alert">
    <!-- Slot will render <p> tag around the text -->
    <slot />
  </div>
</template>

It is the default behavior of markdown to wrap every text inside a paragraph. MDC didn't come to break markdown behavior; instead, the goal of MDC is to make markdown powerful. In this example and all similar situations, you can use <MDCSlot /> to remove unwanted wrappers.

<template>
  <div class="alert">
    <!-- MDCSlot will only render the actual text without the wrapping <p> -->
    <MDCSlot unwrap="p" />
  </div>
</template>

Prose Components

Prose components are a list of components that will be rendered instead of regular HTML tags. For example, instead of rendering a <p> tag, @nuxtjs/mdc renders a <ProseP> component. This is useful when you want to add extra features to your markdown files. For example, you can add a copy button to your code blocks.

You can disable prose components by setting the prose option to false in nuxt.config.ts. Or extend the map of prose components to add your own components.

export default defineNuxtConfig({
  modules: ['@nuxtjs/mdc'],
  mdc: {
    components: {
      prose: false, // Disable predefined prose components
      map: {
        p: 'MyCustomPComponent'
      }
    }
  }
})

Here is the list of available prose components:

Tag Component Source Description
p <ProseP> ProseP.vue Paragraph
h1 <ProseH1> ProseH1.vue Heading 1
h2 <ProseH2> ProseH2.vue Heading 2
h3 <ProseH3> ProseH3.vue Heading 3
h4 <ProseH4> ProseH4.vue Heading 4
h5 <ProseH5> ProseH5.vue Heading 5
h6 <ProseH6> ProseH6.vue Heading 6
ul <ProseUl> ProseUl.vue Unordered List
ol <ProseOl> ProseOl.vue Ordered List
li <ProseLi> ProseLi.vue List Item
blockquote <ProseBlockquote> ProseBlockquote.vue Blockquote
hr <ProseHr> ProseHr.vue Horizontal Rule
pre <ProsePre> ProsePre.vue Preformatted Text
code <ProseCode> ProseCode.vue Code Block
table <ProseTable> ProseTable.vue Table
thead <ProseThead> ProseThead.vue Table Head
tbody <ProseTbody> ProseTbody.vue Table Body
tr <ProseTr> ProseTr.vue Table Row
th <ProseTh> ProseTh.vue Table Header
td <ProseTd> ProseTd.vue Table Data
a <ProseA> ProseA.vue Anchor Link
img <ProseImg> ProseImg.vue Image
em <ProseEm> ProseEm.vue Emphasis
strong <ProseStrong> ProseStrong.vue Strong

Parsing Markdown

Nuxt MDC exposes a handy helper to parse MDC files. You can import the parseMarkdown function from @nuxtjs/mdc/runtime and use it to parse markdown files written with MDC syntax.

Node.js

// server/api/parse-mdc.ts
import { parseMarkdown } from '@nuxtjs/mdc/runtime'

export default eventHandler(async () => {
  const mdc = [
    '# Hello MDC',
    '',
    '::alert',
    'This is an Alert',
    '::'
  ].join('\n')

  const ast = await parseMarkdown(mdc)

  return ast
})

Browser

The parseMarkdown function is a universal helper, and you can also use it in the browser, for example inside a Vue component.

<script setup lang="ts">
import { parseMarkdown } from '@nuxtjs/mdc/runtime'

const ast = await useAsyncData('markdown', () => parseMarkdown('::alert\nMissing markdown input\n::'))
</script>

<template>
  <MDCRenderer :body="ast.body" :data="ast.data" />
</template>

Options

The parseMarkdown helper also accepts options as the second argument to control the parser's behavior. (Checkout MDCParseOptions interface↗︎).

Name Default Description
remark.plugins {} Register / Configure parser's remark plugins.
rehype.options {} Configure remark-rehype options.
rehype.plugins {} Register / Configure parser's rehype plugins.
highlight false Control whether code blocks should highlight or not. You can also provide a custom highlighter.
toc.depth 2 Maximum heading depth to include in the table of contents.
toc.searchDepth 2 Maximum depth of nested tags to search for heading.

Checkout MDCParseOptions types↗︎.

Configurations

You can configure the module by providing the mdc property in your nuxt.config.js; here are the default options:

import { defineNuxtConfig } from 'nuxt/config'

export default defineNuxtConfig({
  modules: ['@nuxtjs/mdc'],
  mdc: {
    remarkPlugins: {
      plugins: {
        // Register/Configure remark plugin to extend the parser
      }
    },
    rehypePlugins: {
      options: {
        // Configure rehype options to extend the parser
      },
      plugins: {
        // Register/Configure rehype plugin to extend the parser
      }
    },
    headings: {
      anchorLinks: {
        // Enable/Disable heading anchor links. { h1: true, h2: false }
      }
    },
    highlight: false, // Control syntax highlighting
    components: {
      prose: false, // Add predefined map to render Prose Components instead of HTML tags, like p, ul, code
      map: {
        // This map will be used in `<MDCRenderer>` to control rendered components
      }
    }
  }
})

Checkout ModuleOptions types↗︎.

Contributing

You can contribute to this module online with CodeSandbox:

Edit @nuxtjs/mdc

Or locally:

  1. Clone this repository
  2. Install dependencies using pnpm install
  3. Start the development server using pnpm dev

License

MIT License

Copyright (c) NuxtLabs