Files F118414827

OnChunksLoadedRuntimeModule.js
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Created: Thu, Jun 19, 21:09

OnChunksLoadedRuntimeModule.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");

	class OnChunksLoadedRuntimeModule extends RuntimeModule {
	constructor() {
	super("chunk loaded");
	}

	/**
	* @returns {string} runtime code
	*/
	generate() {
	const { compilation } = this;
	const { runtimeTemplate } = compilation;
	return Template.asString([
	"var deferred = [];",
	`${RuntimeGlobals.onChunksLoaded} = ${runtimeTemplate.basicFunction(
	"result, chunkIds, fn, priority",
	[
	"if(chunkIds) {",
	Template.indent([
	"priority = priority \|\| 0;",
	"for(var i = deferred.length; i > 0 && deferred[i - 1][2] > priority; i--) deferred[i] = deferred[i - 1];",
	"deferred[i] = [chunkIds, fn, priority];",
	"return;"
	]),
	"}",
	"var notFulfilled = Infinity;",
	"for (var i = 0; i < deferred.length; i++) {",
	Template.indent([
	runtimeTemplate.destructureArray(
	["chunkIds", "fn", "priority"],
	"deferred[i]"
	),
	"var fulfilled = true;",
	"for (var j = 0; j < chunkIds.length; j++) {",
	Template.indent([
	`if ((priority & 1 === 0 \|\| notFulfilled >= priority) && Object.keys(${
	RuntimeGlobals.onChunksLoaded
	}).every(${runtimeTemplate.returningFunction(
	`${RuntimeGlobals.onChunksLoaded}[key](chunkIds[j])`,
	"key"
	)})) {`,
	Template.indent(["chunkIds.splice(j--, 1);"]),
	"} else {",
	Template.indent([
	"fulfilled = false;",
	"if(priority < notFulfilled) notFulfilled = priority;"
	]),
	"}"
	]),
	"}",
	"if(fulfilled) {",
	Template.indent([
	"deferred.splice(i--, 1)",
	"var r = fn();",
	"if (r !== undefined) result = r;"
	]),
	"}"
	]),
	"}",
	"return result;"
	]
	)};`
	]);
	}
	}

	module.exports = OnChunksLoadedRuntimeModule;

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