webpack/lib/ModuleReason.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support 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
	Author Tobias Koppers @sokra
*/
"use strict";

/** @typedef {import("./Module")} Module */
/** @typedef {import("./Dependency")} Dependency */

class ModuleReason {
	/**
	 * @param {Module} module the referencing module
	 * @param {Dependency} dependency the referencing dependency
	 * @param {string=} explanation some extra detail
	 */
	constructor(module, dependency, explanation) {
		this.module = module;
		this.dependency = dependency;
		this.explanation = explanation;
		this._chunks = null;
	}

	hasChunk(chunk) {
		if (this._chunks) {
			if (this._chunks.has(chunk)) return true;
		} else if (this.module && this.module._chunks.has(chunk)) return true;
		return false;
	}

	rewriteChunks(oldChunk, newChunks) {
		if (!this._chunks) {
			if (this.module) {
				if (!this.module._chunks.has(oldChunk)) return;
				this._chunks = new Set(this.module._chunks);
			} else {
				this._chunks = new Set();
			}
		}
		if (this._chunks.has(oldChunk)) {
			this._chunks.delete(oldChunk);
			for (let i = 0; i < newChunks.length; i++) {
				this._chunks.add(newChunks[i]);
			}
		}
	}
}

module.exports = ModuleReason;