webpack/lib/dependencies/LocalModuleDependency.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
	Author Tobias Koppers @sokra
*/

"use strict";

const makeSerializable = require("../util/makeSerializable");
const NullDependency = require("./NullDependency");

/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
/** @typedef {import("../Dependency")} Dependency */
/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
/** @typedef {import("./LocalModule")} LocalModule */

class LocalModuleDependency extends NullDependency {
	/**
	 * @param {LocalModule} localModule local module
	 * @param {Range | undefined} range range
	 * @param {boolean} callNew true, when the local module should be called with new
	 */
	constructor(localModule, range, callNew) {
		super();

		this.localModule = localModule;
		this.range = range;
		this.callNew = callNew;
	}

	/**
	 * @param {ObjectSerializerContext} context context
	 */
	serialize(context) {
		const { write } = context;

		write(this.localModule);
		write(this.range);
		write(this.callNew);

		super.serialize(context);
	}

	/**
	 * @param {ObjectDeserializerContext} context context
	 */
	deserialize(context) {
		const { read } = context;

		this.localModule = read();
		this.range = read();
		this.callNew = read();

		super.deserialize(context);
	}
}

makeSerializable(
	LocalModuleDependency,
	"webpack/lib/dependencies/LocalModuleDependency"
);

LocalModuleDependency.Template = class LocalModuleDependencyTemplate extends (
	NullDependency.Template
) {
	/**
	 * @param {Dependency} dependency the dependency for which the template should be applied
	 * @param {ReplaceSource} source the current replace source which can be modified
	 * @param {DependencyTemplateContext} templateContext the context object
	 * @returns {void}
	 */
	apply(dependency, source, templateContext) {
		const dep = /** @type {LocalModuleDependency} */ (dependency);
		if (!dep.range) return;
		const moduleInstance = dep.callNew
			? `new (function () { return ${dep.localModule.variableName()}; })()`
			: dep.localModule.variableName();
		source.replace(dep.range[0], dep.range[1] - 1, moduleInstance);
	}
};

module.exports = LocalModuleDependency;