webpack/lib/AsyncDependenciesBlock.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";

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

/** @typedef {import("./ChunkGraph")} ChunkGraph */
/** @typedef {import("./ChunkGroup")} ChunkGroup */
/** @typedef {import("./ChunkGroup").ChunkGroupOptions} ChunkGroupOptions */
/** @typedef {import("./Dependency").DependencyLocation} DependencyLocation */
/** @typedef {import("./Dependency").UpdateHashContext} UpdateHashContext */
/** @typedef {import("./Entrypoint").EntryOptions} EntryOptions */
/** @typedef {import("./Module")} Module */
/** @typedef {import("./util/Hash")} Hash */

class AsyncDependenciesBlock extends DependenciesBlock {
	/**
	 * @param {ChunkGroupOptions & { entryOptions?: EntryOptions }} groupOptions options for the group
	 * @param {DependencyLocation=} loc the line of code
	 * @param {string=} request the request
	 */
	constructor(groupOptions, loc, request) {
		super();
		if (typeof groupOptions === "string") {
			groupOptions = { name: groupOptions };
		} else if (!groupOptions) {
			groupOptions = { name: undefined };
		}
		this.groupOptions = groupOptions;
		this.loc = loc;
		this.request = request;
		this._stringifiedGroupOptions = undefined;
	}

	/**
	 * @returns {string} The name of the chunk
	 */
	get chunkName() {
		return this.groupOptions.name;
	}

	/**
	 * @param {string} value The new chunk name
	 * @returns {void}
	 */
	set chunkName(value) {
		if (this.groupOptions.name !== value) {
			this.groupOptions.name = value;
			this._stringifiedGroupOptions = undefined;
		}
	}

	/**
	 * @param {Hash} hash the hash used to track dependencies
	 * @param {UpdateHashContext} context context
	 * @returns {void}
	 */
	updateHash(hash, context) {
		const { chunkGraph } = context;
		if (this._stringifiedGroupOptions === undefined) {
			this._stringifiedGroupOptions = JSON.stringify(this.groupOptions);
		}
		const chunkGroup = chunkGraph.getBlockChunkGroup(this);
		hash.update(
			`${this._stringifiedGroupOptions}${chunkGroup ? chunkGroup.id : ""}`
		);
		super.updateHash(hash, context);
	}

	serialize(context) {
		const { write } = context;
		write(this.groupOptions);
		write(this.loc);
		write(this.request);
		super.serialize(context);
	}

	deserialize(context) {
		const { read } = context;
		this.groupOptions = read();
		this.loc = read();
		this.request = read();
		super.deserialize(context);
	}
}

makeSerializable(AsyncDependenciesBlock, "webpack/lib/AsyncDependenciesBlock");

Object.defineProperty(AsyncDependenciesBlock.prototype, "module", {
	get() {
		throw new Error(
			"module property was removed from AsyncDependenciesBlock (it's not needed)"
		);
	},
	set() {
		throw new Error(
			"module property was removed from AsyncDependenciesBlock (it's not needed)"
		);
	}
});

module.exports = AsyncDependenciesBlock;