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49 lines
1.3 KiB
49 lines
1.3 KiB
/* |
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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 ChunkPrefetchTriggerRuntimeModule extends RuntimeModule { |
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/** |
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* @param {Record<string|number, (string|number)[]>} 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} runtime code |
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*/ |
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generate() { |
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const { chunkMap } = this; |
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const { runtimeTemplate } = this.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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