import { createUnplugin } from 'unplugin'

export const unplugin = createUnplugin((options: UserOptions) => {
  return {
    name: 'my-first-unplugin',
    // webpack's id filter is outside of loader logic,
    // an additional hook is needed for better perf on webpack
    transformInclude (id) {
      return id.endsWith('.vue')
    },
    // just like rollup transform
    transform (code) {
      return code.replace(/<template>/, `<template><div>Injected</div>`)
    },
    // more hooks coming
  }
})

export const vitePlugin = unplugin.vite
export const rollupPlugin = unplugin.rollup
export const webpackPlugin = unplugin.webpack
export const esbuildPlugin = unplugin.esbuild

// vite.config.ts
import MyUnplugin from './my-unplugin'

export default {
  plugins: [
    MyUnplugin.vite({ /* options */ })
  ]
}

// rollup.config.js
import MyUnplugin from './my-unplugin'

export default {
  plugins: [
    MyUnplugin.rollup({ /* options */ })
  ]
}

// webpack.config.js
module.exports = {
  plugins: [
    require('./my-unplugin').webpack({ /* options */ })
  ]
}

// esbuild.config.js
import { build } from 'esbuild'

build({
  plugins: [
    require('./my-unplugin').esbuild({ /* options */ })
  ]
})

export const unplugin = createUnplugin((options: UserOptions, meta) => {

  console.log(meta.framework) // 'vite' | 'rollup' | 'webpack' | 'esbuild'

  return {
    // common unplugin hooks
    name: 'my-first-unplugin',
    transformInclude (id) { /* ... */ },
    transform (code) { /* ... */  },
    
    // framework specific hooks
    vite: {
      // Vite config
      configureServer(server) {
        // configure Vite server
      }
    },
    rollup: {
      // Rollup config
    },
    webpack(compiler) {
      // configure Webpack compiler
    },
    esbuild: {
      // change the filter of onResolve and onLoad
      onResolveFilter?: RegExp
      onLoadFilter?: RegExp
      // or you can completely replace the setup logic
      setup?: EsbuildPlugin['setup']
    }
  }
})