mdResolve.js

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 const md = () => {
  return {
    name: 'md',
    configureServer() {
      // 用于开发
      ;async ({ app }) => {
        app.use(async (ctx, next) => {
          // koa
          if (ctx.path.endsWith('.md')) {
            ctx.type = 'js'
            // eslint-disable-next-line no-undef
            const filePath = path.join(process.cwd(), ctx.path)
            ctx.body = mdToJs(fs.readFileSync(filePath).toString())
          } else {
            await next()
          }
        })
      }
    },
    transform(code, id) {
      // 用于 rollup // 插件
      // 获取文件后缀名
      const fileArr = id.split('.') //根据.分割数组
      const fileType = fileArr[fileArr.length - 1] //取最后一个

      if (/md$/.test(fileType)) {
        return mdToJs(code)
      }
      return
    }
  }
}