How to Effectively Manage jQuery Plugin Dependencies in Webpack?

Managing jQuery Plugin Dependency in Webpack

When using Webpack in complex applications, managing dependencies can become a challenge. This is especially true for legacy plugins that rely on frameworks like jQuery. In this article, we'll explore different approaches to seamlessly integrate jQuery plugins into your Webpack projects.

1. Aliasing the Source Version

webpack can optimize dependencies more effectively if you alias the source version of vendor modules. This allows webpack to perform enhancements like deduping.

// webpack.config.js
module.exports = {
    resolve: {
        alias: {
            jquery: "jquery/src/jquery"
        }
    }
};

2. Injecting Implicit Globals with ProvidePlugin

Legacy modules often rely on globals like $, which is indispensable for jQuery plugins. The ProvidePlugin injects implicit globals into your webpack bundle, ensuring their availability.

var webpack = require("webpack");

    ...
    
    plugins: [
        new webpack.ProvidePlugin({
            $: "jquery",
            jQuery: "jquery"
        })
    ]

3. Configuring with the Imports-Loader

Certain modules may rely on being the window object, which becomes problematic in a CommonJS context. The imports-loader overrides this constraint.

module: {
    loaders: [
        {
            test: /[\/\]node_modules[\/\]some-module[\/\]index\.js$/,
            loader: "imports-loader?this=>window"
        }
    ]
}

4. Disabling AMD with the Imports-Loader

Some modules support multiple module styles, including AMD, CommonJS, and legacy. The imports-loader can disable AMD to force the CommonJS path.

module: {
    loaders: [
        {
            test: /[\/\]node_modules[\/\]some-module[\/\]index\.js$/,
            loader: "imports-loader?define=>false"
        }
    ]
}

5. Including Global Scripts with the Script-Loader

If global variables are not a concern, the script-loader provides an alternative method to import legacy scripts in a global context.

6. Using noParse for Large Dists

If no AMD/CommonJS version of a module is available, you can mark it as noParse to expedite the build process. However, note that AST enhancements become unavailable.

module: {
    noParse: [
        /[\/\]node_modules[\/\]angular[\/\]angular\.js$/
    ]
}

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