使用Vite2+Vue3渲染Markdown文档的方法实践

自定义 Vite 插件

如果去网上相关问题，大部分都是这种方式，就是自定义插件，使得 Vite 支持 Markdown 渲染，具体做法如下：

在项目根目录创建 md.js 文件，填充如下内容：

import path from 'path';
import fs from 'fs';
import marked from 'marked';

const mdToJs = str => {
  const content = JSON.stringify(marked(str));
  return `export default ${content}`;
};

export function md() {
  return {
    configureServer: [ // 用于开发
      async ({ app }) => {
        app.use(async (ctx, next) => {
          // 获取后缀为 .md 的文件，将他变为 js 文件
          if (ctx.path.endsWith('.md')) {             
            ctx.type = 'js';
            const filePath = path.join(process.cwd(), ctx.path);
            ctx.body = mdToJs(fs.readFileSync(filePath).toString());
          } else {
            await next();
          }
        });
      },
    ],
    transforms: [{  // 用于 rollup
      test: context => context.path.endsWith('.md'),
      transform: ({ code }) => mdToJs(code)
    }]
  };
}

接着修改 vite.config.js，引入上面创建的插件。

import {md} from './md';

export default {
  plugins: [md()]
};

这样，在使用时，会将导入的 md 文件转换成 js 文件渲染。具体使用示例：

<template>
<article v-html="md" />
</template>

<script lang="ts">
import md from './xxx.md'
export default {
setup(){

  return {md}
  
  }
}

使用 vite-plugin-markdown

这款第三方插件不仅支持引入并渲染 Markdown 文件，并且支持渲染成各种格式，例入 HTML 字符串、React 或 Vue 的组件等。
安装 vite-plugin-markdown。

npm i vite-plugin-markdown

在 vite.config.js 中修改：

const mdPlugin = require('vite-plugin-markdown')

export default {
  plugins: [
    mdPlugin.plugin({
      mode: ['html'],
    })
  ]
}

配置中传入一个 options，选项对象，支持以下参数：

mode?: ('html' | 'toc' | 'react' | 'vue')[]

markdown?: (body: string) => string

markdownIt?: MarkdownIt | MarkdownIt.Options

各个模式下的渲染示例：

Import Front Matter attributes

---
title: Awesome Title
description: Describe this awesome content
tags:
  - "great"
  - "awesome"
  - "rad"
---
# This is awesome
Vite is an opinionated web dev build tool that serves your code via native ES Module imports during dev and bundles it with Rollup for production.

import { attributes } from './contents/the-doc.md';

console.log(attributes) //=> { title: 'Awesome Title', description: 'Describe this awesome content', tags: ['great', 'awesome', 'rad'] }

Import compiled HTML (Mode.HTML)

import { html } from './contents/the-doc.md';

console.log(html) 
//=> "<h1>This is awesome</h1><p>ite is an opinionated web dev build tool that serves your code via native ES Module imports during dev and bundles it with Rollup for production.</p>"

Import ToC metadata (Mode.TOC)

# vite

Vite is an opinionated web dev build tool that serves your code via native ES Module imports during dev and bundles it with Rollup for production.

## Status

## Getting Started

# Notes

import { toc } from './contents/the-doc.md'

console.log(toc)
//=> [{ level: '1', content: 'vite' }, { level: '2', content: 'Status' }, { level: '2', content: 'Getting Started' }, { level: '1', content: 'Notes' },]

Import as a React component (Mode.REACT)

import React from 'react'
import { ReactComponent } from './contents/the-doc.md'

function MyReactApp() {
  return (
    <div>
      <ReactComponent />
    </div>
}

Import as a Vue component (Mode.VUE)

<template>
  <article>
    <markdown-content />
  </article>
</template>

<script>
import { VueComponent } from './contents/the-doc.md'

export default {
  components: {
    MarkdownContent: VueComponent
  }
};
</script>

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