Marc Mintel
5397309103
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52 lines
1.4 KiB
Plaintext
52 lines
1.4 KiB
Plaintext
/*
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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("../Compilation")} Compilation */
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/** @typedef {import("../Chunk").ChunkChildIdsByOrdersMap} ChunkChildIdsByOrdersMap */
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class ChunkPrefetchTriggerRuntimeModule extends RuntimeModule {
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/**
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* @param {ChunkChildIdsByOrdersMap} chunkMap map from chunk to
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*/
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constructor(chunkMap) {
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super("chunk prefetch trigger", RuntimeModule.STAGE_TRIGGER);
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this.chunkMap = chunkMap;
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}
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/**
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* @returns {string | null} runtime code
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*/
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generate() {
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const { chunkMap } = this;
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const compilation = /** @type {Compilation} */ (this.compilation);
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const { runtimeTemplate } = compilation;
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const body = [
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"var chunks = chunkToChildrenMap[chunkId];",
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`Array.isArray(chunks) && chunks.map(${RuntimeGlobals.prefetchChunk});`
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];
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return Template.asString([
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Template.asString([
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`var chunkToChildrenMap = ${JSON.stringify(chunkMap, null, "\t")};`,
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`${
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RuntimeGlobals.ensureChunkHandlers
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}.prefetch = ${runtimeTemplate.expressionFunction(
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`Promise.all(promises).then(${runtimeTemplate.basicFunction(
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"",
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body
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)})`,
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"chunkId, promises"
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)};`
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])
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]);
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}
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}
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module.exports = ChunkPrefetchTriggerRuntimeModule;
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