Awesome

unplugin-detect-duplicated-deps

Detect duplicate packaged dependencies

effect

Installation

npm i -D unplugin-detect-duplicated-deps

Usage

You can use the jsdoc to check option description and default value.

// vite.config.ts
import UnpluginDetectDuplicatedDeps from 'unplugin-detect-duplicated-deps/vite';

export default defineConfig({
  plugins: [UnpluginDetectDuplicatedDeps()],
});

</details> <details> <summary>Rollup</summary>

// rollup.config.js
import UnpluginDetectDuplicatedDeps from 'unplugin-detect-duplicated-deps/rollup';

export default {
  plugins: [UnpluginDetectDuplicatedDeps()],
};

</details> <details> <summary>Webpack</summary>

// webpack.config.mjs
import UnpluginDetectDuplicatedDeps from 'unplugin-detect-duplicated-deps/webpack';

const config = {
  plugins: [UnpluginDetectDuplicatedDeps()],
};

</details>

Use as build checker

export default defineConfig({
  plugins: [
    UnpluginDetectDuplicatedDeps({
      // will exit build process if duplicated deps found
      throwErrorWhenDuplicated: true,
      // ignore specific duplicated deps
      ignore: {
        axios: ['0.27.2'],
        vue: ['*'],
      },
    }),
  ],
});

Use in commonjs environment

Because vite6 plan to deprecate commonjs node api, this plugin deprecate the commonjs support from 1.x. If you want use this plugin in commonjs environment, check 0.x

Thanks

duplicate-package-checker-webpack-plugin
unplugin
unplugin-starter
bundlephobia provide the api to get package size
vercel host documentation