1 |
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2 |
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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 path = require("path");
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8 | const asyncLib = require("neo-async");
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9 | const SingleEntryDependency = require("./dependencies/SingleEntryDependency");
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10 |
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11 | class LibManifestPlugin {
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12 | constructor(options) {
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13 | this.options = options;
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14 | }
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15 |
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16 | apply(compiler) {
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17 | compiler.hooks.emit.tapAsync(
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18 | "LibManifestPlugin",
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19 | (compilation, callback) => {
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20 | asyncLib.forEach(
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21 | compilation.chunks,
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22 | (chunk, callback) => {
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23 | if (!chunk.isOnlyInitial()) {
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24 | callback();
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25 | return;
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26 | }
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27 | const targetPath = compilation.getPath(this.options.path, {
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28 | hash: compilation.hash,
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29 | chunk
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30 | });
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31 | const name =
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32 | this.options.name &&
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33 | compilation.getPath(this.options.name, {
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34 | hash: compilation.hash,
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35 | chunk
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36 | });
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37 | const manifest = {
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38 | name,
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39 | type: this.options.type,
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40 | content: Array.from(chunk.modulesIterable, module => {
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41 | if (
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42 | this.options.entryOnly &&
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43 | !module.reasons.some(
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44 | r => r.dependency instanceof SingleEntryDependency
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45 | )
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46 | ) {
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47 | return;
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48 | }
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49 | if (module.libIdent) {
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50 | const ident = module.libIdent({
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51 | context: this.options.context || compiler.options.context
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52 | });
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53 | if (ident) {
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54 | return {
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55 | ident,
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56 | data: {
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57 | id: module.id,
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58 | buildMeta: module.buildMeta
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59 | }
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60 | };
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61 | }
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62 | }
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63 | })
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64 | .filter(Boolean)
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65 | .reduce((obj, item) => {
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66 | obj[item.ident] = item.data;
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67 | return obj;
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68 | }, Object.create(null))
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69 | };
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70 |
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71 | const manifestContent = this.options.format
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72 | ? JSON.stringify(manifest, null, 2)
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73 | : JSON.stringify(manifest);
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74 | const content = Buffer.from(manifestContent, "utf8");
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75 | compiler.outputFileSystem.mkdirp(path.dirname(targetPath), err => {
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76 | if (err) return callback(err);
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77 | compiler.outputFileSystem.writeFile(
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78 | targetPath,
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79 | content,
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80 | callback
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81 | );
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82 | });
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83 | },
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84 | callback
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85 | );
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86 | }
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87 | );
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88 | }
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89 | }
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90 | module.exports = LibManifestPlugin;
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