Files F118208405

ChunkPreloadTriggerRuntimeModule.js
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Created: Wed, Jun 18, 11:30

ChunkPreloadTriggerRuntimeModule.js
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	/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	*/

	"use strict";

	const RuntimeGlobals = require("../RuntimeGlobals");
	const RuntimeModule = require("../RuntimeModule");
	const Template = require("../Template");

	/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */

	class ChunkPreloadTriggerRuntimeModule extends RuntimeModule {
	/**
	* @param {Record<string\|number, (string\|number)[]>} chunkMap map from chunk to chunks
	*/
	constructor(chunkMap) {
	super(`chunk preload trigger`, RuntimeModule.STAGE_TRIGGER);
	this.chunkMap = chunkMap;
	}

	/**
	* @returns {string} runtime code
	*/
	generate() {
	const { chunkMap } = this;
	const { runtimeTemplate } = this.compilation;
	const body = [
	"var chunks = chunkToChildrenMap[chunkId];",
	`Array.isArray(chunks) && chunks.map(${RuntimeGlobals.preloadChunk});`
	];
	return Template.asString([
	Template.asString([
	`var chunkToChildrenMap = ${JSON.stringify(chunkMap, null, "\t")};`,
	`${
	RuntimeGlobals.ensureChunkHandlers
	}.preload = ${runtimeTemplate.basicFunction("chunkId", body)};`
	])
	]);
	}
	}

	module.exports = ChunkPreloadTriggerRuntimeModule;

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