Last change
on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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1.3 KB
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1 | /*
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2 | MIT License http://www.opensource.org/licenses/mit-license.php
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3 | */
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4 |
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5 | "use strict";
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6 |
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7 | const RuntimeGlobals = require("../RuntimeGlobals");
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8 | const RuntimeModule = require("../RuntimeModule");
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9 | const Template = require("../Template");
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10 |
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11 | /** @typedef {import("../RuntimeTemplate")} RuntimeTemplate */
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12 |
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13 | class ChunkPrefetchTriggerRuntimeModule extends RuntimeModule {
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14 | /**
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15 | * @param {Record<string|number, (string|number)[]>} chunkMap map from chunk to
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16 | */
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17 | constructor(chunkMap) {
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18 | super(`chunk prefetch trigger`, RuntimeModule.STAGE_TRIGGER);
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19 | this.chunkMap = chunkMap;
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20 | }
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21 |
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22 | /**
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23 | * @returns {string} runtime code
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24 | */
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25 | generate() {
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26 | const { chunkMap } = this;
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27 | const { runtimeTemplate } = this.compilation;
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28 | const body = [
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29 | "var chunks = chunkToChildrenMap[chunkId];",
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30 | `Array.isArray(chunks) && chunks.map(${RuntimeGlobals.prefetchChunk});`
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31 | ];
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32 | return Template.asString([
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33 | Template.asString([
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34 | `var chunkToChildrenMap = ${JSON.stringify(chunkMap, null, "\t")};`,
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35 | `${
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36 | RuntimeGlobals.ensureChunkHandlers
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37 | }.prefetch = ${runtimeTemplate.expressionFunction(
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38 | `Promise.all(promises).then(${runtimeTemplate.basicFunction(
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39 | "",
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40 | body
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41 | )})`,
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42 | "chunkId, promises"
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43 | )};`
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44 | ])
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45 | ]);
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46 | }
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47 | }
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48 |
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49 | module.exports = ChunkPrefetchTriggerRuntimeModule;
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