antfu / unplugin-auto-import

Auto import APIs on-demand for Vite, Webpack and Rollup

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unplugin-auto-import

NPM version

Auto import APIs on-demand for Vite, Webpack, Rollup and esbuild. With TypeScript support. Powered by unplugin.


without

import { computed, ref } from 'vue'
const count = ref(0)
const doubled = computed(() => count.value * 2)

with

const count = ref(0)
const doubled = computed(() => count.value * 2)

without

import { useState } from 'react'
export function Counter() {
  const [count, setCount] = useState(0)
  return <div>{ count }</div>
}

with

export function Counter() {
  const [count, setCount] = useState(0)
  return <div>{ count }</div>
}

Install

npm i -D unplugin-auto-import
Vite
// vite.config.ts
import AutoImport from 'unplugin-auto-import/vite'

export default defineConfig({
  plugins: [
    AutoImport({ /* options */ }),
  ],
})

Example: playground/


Rollup
// rollup.config.js
import AutoImport from 'unplugin-auto-import/rollup'

export default {
  plugins: [
    AutoImport({ /* options */ }),
    // other plugins
  ],
}


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


Nuxt
// nuxt.config.js
export default {
  buildModules: [
    ['unplugin-auto-import/nuxt', { /* options */ }],
  ],
}

This module works for both Nuxt 2 and Nuxt Vite


Vue CLI
// vue.config.js
module.exports = {
  configureWebpack: {
    plugins: [
      require('unplugin-auto-import/webpack')({ /* options */ }),
    ],
  },
}


Quasar
// quasar.conf.js
const AutoImportPlugin = require('unplugin-auto-import/webpack')

module.exports = {
  build: {
    chainWebpack(chain) {
      chain.plugin('unplugin-auto-import').use(
        AutoImportPlugin({ /* options */ }),
      )
    },
  },
}


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

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


Configuration

AutoImport({
  // targets to transform
  include: [
    /\.[tj]sx?$/, // .ts, .tsx, .js, .jsx
    /\.vue$/, /\.vue\?vue/, // .vue
    /\.md$/, // .md
  ],

  // global imports to register
  imports: [
    // presets
    'vue',
    'vue-router',
    // custom
    {
      '@vueuse/core': [
        // named imports
        'useMouse', // import { useMouse } from '@vueuse/core',
        // alias
        ['useFetch', 'useMyFetch'], // import { useFetch as useMyFetch } from '@vueuse/core',
      ],
      'axios': [
        // default imports
        ['default', 'axios'], // import { default as axios } from 'axios',
      ],
      '[package-name]': [
        '[import-names]',
        // alias
        ['[from]', '[alias]'],
      ],
    },
  ],

  // Generate corresponding .eslintrc-auto-import.json file.
  // eslint globals Docs - https://eslint.org/docs/user-guide/configuring/language-options#specifying-globals
  eslintrc: {
    enabled: false, // Default `false`
    filepath: './.eslintrc-auto-import.json', // Default `./.eslintrc-auto-import.json`
    globalsPropValue: true, // Default `true`, (true | false | 'readonly' | 'readable' | 'writable' | 'writeable')
  },

  // custom resolvers
  // see https://github.com/antfu/unplugin-auto-import/pull/23/
  resolvers: [
    /* ... */
  ],

  // Filepath to generate corresponding .d.ts file.
  // Defaults to './auto-imports.d.ts' when `typescript` is installed locally.
  // Set `false` to disable.
  dts: './auto-imports.d.ts',
})

Refer to the type definitions for more options.

Presets

See src/presets.

ESLint - eslint(no-undef)

Configure options.eslintrc, and modify your eslint configuration file.

Example:

// .eslintrc.js

module.exports = {
  /* ... */
  extends: [
    // ...
    './.eslintrc-auto-import.json',
  ],
}

ESLint Docs: Extending Configuration Files

Note: .eslintrc-auto-import.json is generated automatically, If the configuration file changes do not take effect in time, please check the configuration file, restart eslint server or the editor

TypeScript

In order to properly hint types for auto-imported APIs, make sure:

  • to configure options.dts so that auto-imports.d.ts file is automatically generated
  • to include auto-imports.d.ts in tsconfig.json

FAQ

Compare to vue-global-api

You can think of this plugin as a successor to vue-global-api, but offering much more flexibility and bindings with libraries other than Vue (e.g. React).

Pros
  • Flexible and customizable
  • Tree-shakable (on-demand transforming)
  • No global population
Cons
  • Relying on build tools integrations (while vue-global-api is pure runtime) - but hey, we have supported quite a few of them already!

Sponsors

License

MIT License © 2021 Anthony Fu

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About

Auto import APIs on-demand for Vite, Webpack and Rollup

License:MIT License


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