mirror of https://github.com/webpack/webpack.git
70 lines
1.9 KiB
JavaScript
70 lines
1.9 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const ChunkGroup = require("./ChunkGroup");
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/** @typedef {import("./Chunk")} Chunk */
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/**
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* Entrypoint serves as an encapsulation primitive for chunks that are
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* a part of a single ChunkGroup. They represent all bundles that need to be loaded for a
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* single instance of a page. Multi-page application architectures will typically yield multiple Entrypoint objects
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* inside of the compilation, whereas a Single Page App may only contain one with many lazy-loaded chunks.
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*/
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class Entrypoint extends ChunkGroup {
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/**
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* Creates an instance of Entrypoint.
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* @param {string} name the name of the entrypoint
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*/
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constructor(name) {
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super(name);
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/** @type {Chunk=} */
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this.runtimeChunk = undefined;
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}
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/**
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* isInitial will always return true for Entrypoint ChunkGroup.
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* @returns {true} returns true as all entrypoints are initial ChunkGroups
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*/
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isInitial() {
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return true;
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}
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/**
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* Sets the runtimeChunk for an entrypoint.
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* @param {Chunk} chunk the chunk being set as the runtime chunk.
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* @returns {void}
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*/
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setRuntimeChunk(chunk) {
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this.runtimeChunk = chunk;
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}
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/**
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* Fetches the chunk reference containing the webpack bootstrap code
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* @returns {Chunk | null} returns the runtime chunk or null if there is none
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*/
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getRuntimeChunk() {
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if (this.runtimeChunk) return this.runtimeChunk;
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for (const parent of this.parentsIterable) {
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if (parent instanceof Entrypoint) return parent.getRuntimeChunk();
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}
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return null;
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}
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/**
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* @param {Chunk} oldChunk chunk to be replaced
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* @param {Chunk} newChunk New chunk that will be replaced with
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* @returns {boolean} returns true if the replacement was successful
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*/
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replaceChunk(oldChunk, newChunk) {
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if (this.runtimeChunk === oldChunk) this.runtimeChunk = newChunk;
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return super.replaceChunk(oldChunk, newChunk);
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}
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}
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module.exports = Entrypoint;
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