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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const ChunkGroup = require("./ChunkGroup");
/** @typedef {import("./Chunk")} Chunk */
/**
* Entrypoint serves as an encapsulation primitive for chunks that are
* a part of a single ChunkGroup. They represent all bundles that need to be loaded for a
* single instance of a page. Multi-page application architectures will typically yield multiple Entrypoint objects
* inside of the compilation, whereas a Single Page App may only contain one with many lazy-loaded chunks.
*/
class Entrypoint extends ChunkGroup {
/**
* Creates an instance of Entrypoint.
* @param {string} name the name of the entrypoint
*/
constructor(name) {
super(name);
/** @type {Chunk=} */
this.runtimeChunk = undefined;
}
/**
* isInitial will always return true for Entrypoint ChunkGroup.
* @returns {true} returns true as all entrypoints are initial ChunkGroups
*/
isInitial() {
return true;
}
/**
* Sets the runtimeChunk for an entrypoint.
* @param {Chunk} chunk the chunk being set as the runtime chunk.
* @returns {void}
*/
setRuntimeChunk(chunk) {
this.runtimeChunk = chunk;
}
/**
* Fetches the chunk reference containing the webpack bootstrap code
* @returns {Chunk} returns the runtime chunk or first chunk in `this.chunks`
*/
getRuntimeChunk() {
return this.runtimeChunk || this.chunks[0];
}
/**
* @param {Chunk} oldChunk chunk to be replaced
* @param {Chunk} newChunk New chunk that will be replaced with
* @returns {boolean} returns true if the replacement was successful
*/
replaceChunk(oldChunk, newChunk) {
if (this.runtimeChunk === oldChunk) this.runtimeChunk = newChunk;
return super.replaceChunk(oldChunk, newChunk);
}
}
module.exports = Entrypoint;