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

	"use strict";

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

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

	class ChunkPrefetchFunctionRuntimeModule extends RuntimeModule {
	/**
	* @param {string} childType TODO
	* @param {string} runtimeFunction TODO
	* @param {string} runtimeHandlers TODO
	*/
	constructor(childType, runtimeFunction, runtimeHandlers) {
	super(`chunk ${childType} function`);
	this.childType = childType;
	this.runtimeFunction = runtimeFunction;
	this.runtimeHandlers = runtimeHandlers;
	}

	/**
	* @returns {string} runtime code
	*/
	generate() {
	const { runtimeFunction, runtimeHandlers } = this;
	const { runtimeTemplate } = this.compilation;
	return Template.asString([
	`${runtimeHandlers} = {};`,
	`${runtimeFunction} = ${runtimeTemplate.basicFunction("chunkId", [
	// map is shorter than forEach
	`Object.keys(${runtimeHandlers}).map(${runtimeTemplate.basicFunction(
	"key",
	`${runtimeHandlers}[key](chunkId);`
	)});`
	])}`
	]);
	}
	}

	module.exports = ChunkPrefetchFunctionRuntimeModule;