mirror of https://github.com/webpack/webpack.git
50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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*/
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"use strict";
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const RuntimeGlobals = require("../RuntimeGlobals");
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const RuntimeModule = require("../RuntimeModule");
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const Template = require("../Template");
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/** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
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class ChunkPrefetchStartupRuntimeModule extends RuntimeModule {
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/**
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* @param {string} childType TODO
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* @param {string} runtimeFunction TODO
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* @param {(string|number)[]} startupChunks chunk ids to trigger after startup
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*/
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constructor(childType, runtimeFunction, startupChunks) {
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super(`startup ${childType}`, 5);
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this.childType = childType;
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this.runtimeFunction = runtimeFunction;
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this.startupChunks = startupChunks;
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}
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/**
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* @returns {string} runtime code
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*/
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generate() {
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const { runtimeFunction, startupChunks } = this;
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const { runtimeTemplate } = this.compilation;
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return Template.asString([
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`var startup = ${RuntimeGlobals.startup};`,
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`${RuntimeGlobals.startup} = ${runtimeTemplate.basicFunction("", [
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"var result = startup();",
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Template.asString(
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startupChunks.length < 3
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? startupChunks.map(
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c => `${runtimeFunction}(${JSON.stringify(c)});`
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)
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: `${JSON.stringify(startupChunks)}.map(${runtimeFunction});`
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),
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"return result;"
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])};`
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]);
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}
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}
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module.exports = ChunkPrefetchStartupRuntimeModule;
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