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    1.2.0 • Public • Published


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    When working in a large codebase it's likely someone else will add a new package or upgrade an existing package. This often leads to a convoluted webpack error or runtime error as a result of a missing or outdated package.

    The intent of this plugin is to be run in development with webpack so as you checkout different branches or recent changes in version control this plugin can remind you when there are missing or outdated packages.

    Getting Started

    Install the package:

    yarn add -D yarn-check-webpack-plugin
    npm install --save-dev yarn-check-webpack-plugin

    And add the plugin to webpack.config.js:

    const { YarnCheck } = require("yarn-check-webpack-plugin");
    module.exports = {
      // Additional configuration...
      plugins: [new YarnCheck()]

    Or, to webpack.config.ts:

    import * as webpack from "webpack";
    import { YarnCheck } from "yarn-check-webpack-plugin";
    const config: webpack.Configuration = {
      // Additional configuration...
      plugins: [new YarnCheck()]
    module.exports = config;

    Then, run webpack as normal.

    How do I verify it's working?

    Find a random node_module (eg: ls node_modules) and remove it (eg: rm -rf node_modules/lodash) and trigger a rebuild (by changing a file if in watch mode) or by running webpack again.

    The output should include something that looks like:

    Missing packages:
      - lodash
    Please run `yarn install --check-files` to update.


    All configuration is optional. Pass a configuration object when initializing to change any of the options.

    For example:

    new YarnCheck({ rootDirectory: "./another/directory", exclude: /underscore/ });


    Type: String

    Description: The root directory to run the commands. This should be the directory that contains package.json, yarn.lock and node_modules. By default, it will run in the current directory. This option only needs to be set if this plugin is being run in a different directory.


    Type: RegExp

    Description: Ignore warnings for any missing or wrong version packages that match this regex expression.


    npm i yarn-check-webpack-plugin

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    • skovy