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6 | "use strict";
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7 |
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8 | const { compareChunksNatural } = require("../util/comparators");
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9 | const createSchemaValidation = require("../util/create-schema-validation");
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10 | const { assignAscendingChunkIds } = require("./IdHelpers");
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16 |
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17 | const validate = createSchemaValidation(
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18 | require("../../schemas/plugins/ids/OccurrenceChunkIdsPlugin.check.js"),
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19 | () => require("../../schemas/plugins/ids/OccurrenceChunkIdsPlugin.json"),
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20 | {
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21 | name: "Occurrence Order Chunk Ids Plugin",
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22 | baseDataPath: "options"
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23 | }
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24 | );
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25 |
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26 | class OccurrenceChunkIdsPlugin {
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27 | |
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29 |
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30 | constructor(options = {}) {
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31 | validate(options);
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32 | this.options = options;
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33 | }
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34 |
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35 | |
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37 |
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38 |
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39 |
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40 | apply(compiler) {
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41 | const prioritiseInitial = this.options.prioritiseInitial;
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42 | compiler.hooks.compilation.tap("OccurrenceChunkIdsPlugin", compilation => {
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43 | compilation.hooks.chunkIds.tap("OccurrenceChunkIdsPlugin", chunks => {
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44 | const chunkGraph = compilation.chunkGraph;
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45 |
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46 |
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47 | const occursInInitialChunksMap = new Map();
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48 |
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49 | const compareNatural = compareChunksNatural(chunkGraph);
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50 |
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51 | for (const c of chunks) {
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52 | let occurs = 0;
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53 | for (const chunkGroup of c.groupsIterable) {
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54 | for (const parent of chunkGroup.parentsIterable) {
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55 | if (parent.isInitial()) occurs++;
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56 | }
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57 | }
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58 | occursInInitialChunksMap.set(c, occurs);
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59 | }
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60 |
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61 | const chunksInOccurrenceOrder = Array.from(chunks).sort((a, b) => {
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62 | if (prioritiseInitial) {
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63 | const aEntryOccurs = occursInInitialChunksMap.get(a);
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64 | const bEntryOccurs = occursInInitialChunksMap.get(b);
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65 | if (aEntryOccurs > bEntryOccurs) return -1;
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66 | if (aEntryOccurs < bEntryOccurs) return 1;
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67 | }
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68 | const aOccurs = a.getNumberOfGroups();
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69 | const bOccurs = b.getNumberOfGroups();
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70 | if (aOccurs > bOccurs) return -1;
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71 | if (aOccurs < bOccurs) return 1;
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72 | return compareNatural(a, b);
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73 | });
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74 | assignAscendingChunkIds(chunksInOccurrenceOrder, compilation);
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75 | });
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76 | });
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77 | }
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78 | }
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79 |
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80 | module.exports = OccurrenceChunkIdsPlugin;
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