webpack/lib/ContextExclusionPlugin.js

Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
*/

"use strict";

/** @typedef {import("./Compiler")} Compiler */

const PLUGIN_NAME = "ContextExclusionPlugin";

class ContextExclusionPlugin {
	/**
	 * Creates an instance of ContextExclusionPlugin.
	 * @param {RegExp} negativeMatcher Matcher regular expression
	 */
	constructor(negativeMatcher) {
		this.negativeMatcher = negativeMatcher;
	}

	/**
	 * Applies the plugin by registering its hooks on the compiler.
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		compiler.hooks.contextModuleFactory.tap(PLUGIN_NAME, (cmf) => {
			cmf.hooks.contextModuleFiles.tap(PLUGIN_NAME, (files) =>
				files.filter((filePath) => !this.negativeMatcher.test(filePath))
			);
		});
	}
}

module.exports = ContextExclusionPlugin;