webpack/lib/sharing/ProvideSharedDependency.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 Dependency = require("../Dependency");
const makeSerializable = require("../util/makeSerializable");

/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */

class ProvideSharedDependency extends Dependency {
	/**
	 * @param {string} shareScope share scope
	 * @param {string} name module name
	 * @param {string | false} version version
	 * @param {string} request request
	 * @param {boolean} eager true, if this is an eager dependency
	 */
	constructor(shareScope, name, version, request, eager) {
		super();
		this.shareScope = shareScope;
		this.name = name;
		this.version = version;
		this.request = request;
		this.eager = eager;
	}

	get type() {
		return "provide shared module";
	}

	/**
	 * @returns {string | null} an identifier to merge equal requests
	 */
	getResourceIdentifier() {
		return `provide module (${this.shareScope}) ${this.request} as ${
			this.name
		} @ ${this.version}${this.eager ? " (eager)" : ""}`;
	}

	/**
	 * @param {ObjectSerializerContext} context context
	 */
	serialize(context) {
		context.write(this.shareScope);
		context.write(this.name);
		context.write(this.request);
		context.write(this.version);
		context.write(this.eager);
		super.serialize(context);
	}

	/**
	 * @param {ObjectDeserializerContext} context context
	 * @returns {ProvideSharedDependency} deserialize fallback dependency
	 */
	static deserialize(context) {
		const { read } = context;
		const obj = new ProvideSharedDependency(
			read(),
			read(),
			read(),
			read(),
			read()
		);
		this.shareScope = context.read();
		obj.deserialize(context);
		return obj;
	}
}

makeSerializable(
	ProvideSharedDependency,
	"webpack/lib/sharing/ProvideSharedDependency"
);

module.exports = ProvideSharedDependency;