1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = void 0;
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7 |
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8 | var _os = _interopRequireDefault(require("os"));
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9 |
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10 | var _schemaUtils = require("schema-utils");
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11 |
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12 | var _serializeJavascript = _interopRequireDefault(require("serialize-javascript"));
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13 |
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14 | var _pLimit = _interopRequireDefault(require("p-limit"));
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15 |
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16 | var _jestWorker = require("jest-worker");
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17 |
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18 | var _options = _interopRequireDefault(require("./options.json"));
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19 |
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20 | var _utils = require("./utils");
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21 |
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22 | var _minify = require("./minify");
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23 |
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24 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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25 |
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26 | class HtmlMinimizerPlugin {
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27 | constructor(options = {}) {
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28 | (0, _schemaUtils.validate)(_options.default, options, {
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29 | name: "Html Minimizer Plugin",
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30 | baseDataPath: "options"
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31 | });
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32 | const {
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33 | minify = _utils.htmlMinifierTerser,
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34 | minimizerOptions,
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35 | test = /\.html(\?.*)?$/i,
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36 | parallel = true,
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37 | include,
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38 | exclude
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39 | } = options;
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40 | this.options = {
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41 | test,
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42 | parallel,
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43 | include,
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44 | exclude,
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45 | minify,
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46 | minimizerOptions
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47 | };
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48 | }
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49 |
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50 | static buildError(error, file, context) {
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51 | return new Error(`${file} in "${context}" from Html Minimizer\n${error.stack}`);
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52 | }
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53 |
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54 | static getAvailableNumberOfCores(parallel) {
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55 |
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56 |
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57 | const cpus = _os.default.cpus() || {
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58 | length: 1
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59 | };
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60 | return parallel === true ? cpus.length - 1 : Math.min(Number(parallel) || 0, cpus.length - 1);
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61 | }
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62 |
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63 | async optimize(compiler, compilation, assets, optimizeOptions) {
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64 | const cache = compilation.getCache("HtmlMinimizerWebpackPlugin");
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65 | let numberOfAssetsForMinify = 0;
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66 | const assetsForMinify = await Promise.all(Object.keys(assets).filter(name => {
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67 | const {
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68 | info
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69 | } = compilation.getAsset(name);
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70 |
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71 | if (info.minimized) {
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72 | return false;
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73 | }
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74 |
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75 | if (!compiler.webpack.ModuleFilenameHelpers.matchObject.bind(
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76 | undefined, this.options)(name)) {
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77 | return false;
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78 | }
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79 |
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80 | return true;
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81 | }).map(async name => {
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82 | const {
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83 | info,
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84 | source
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85 | } = compilation.getAsset(name);
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86 | const eTag = cache.getLazyHashedEtag(source);
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87 | const cacheItem = cache.getItemCache(name, eTag);
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88 | const output = await cacheItem.getPromise();
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89 |
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90 | if (!output) {
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91 | numberOfAssetsForMinify += 1;
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92 | }
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93 |
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94 | return {
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95 | name,
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96 | info,
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97 | inputSource: source,
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98 | output,
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99 | cacheItem
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100 | };
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101 | }));
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102 | let getWorker;
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103 | let initializedWorker;
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104 | let numberOfWorkers;
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105 |
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106 | if (optimizeOptions.availableNumberOfCores > 0) {
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107 |
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108 | numberOfWorkers = Math.min(numberOfAssetsForMinify, optimizeOptions.availableNumberOfCores);
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109 |
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110 | getWorker = () => {
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111 | if (initializedWorker) {
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112 | return initializedWorker;
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113 | }
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114 |
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115 | initializedWorker = new _jestWorker.Worker(require.resolve("./minify"), {
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116 | numWorkers: numberOfWorkers,
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117 | enableWorkerThreads: true
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118 | });
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119 |
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120 | const workerStdout = initializedWorker.getStdout();
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121 |
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122 | if (workerStdout) {
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123 | workerStdout.on("data", chunk => process.stdout.write(chunk));
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124 | }
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125 |
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126 | const workerStderr = initializedWorker.getStderr();
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127 |
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128 | if (workerStderr) {
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129 | workerStderr.on("data", chunk => process.stderr.write(chunk));
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130 | }
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131 |
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132 | return initializedWorker;
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133 | };
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134 | }
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135 |
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136 | const limit = (0, _pLimit.default)(getWorker && numberOfAssetsForMinify > 0 ? numberOfWorkers : Infinity);
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137 | const {
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138 | RawSource
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139 | } = compiler.webpack.sources;
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140 | const scheduledTasks = [];
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141 |
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142 | for (const asset of assetsForMinify) {
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143 | scheduledTasks.push(limit(async () => {
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144 | const {
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145 | name,
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146 | inputSource,
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147 | cacheItem
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148 | } = asset;
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149 | let {
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150 | output
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151 | } = asset;
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152 | let input;
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153 | const sourceFromInputSource = inputSource.source();
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154 |
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155 | if (!output) {
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156 | input = sourceFromInputSource;
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157 |
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158 | if (Buffer.isBuffer(input)) {
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159 | input = input.toString();
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160 | }
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161 |
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162 | const options = {
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163 | name,
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164 | input,
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165 | minimizerOptions: this.options.minimizerOptions,
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166 | minify: this.options.minify
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167 | };
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168 |
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169 | try {
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170 | output = await (getWorker ? getWorker().transform((0, _serializeJavascript.default)(options)) : (0, _minify.minify)(options));
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171 | } catch (error) {
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172 | compilation.errors.push(HtmlMinimizerPlugin.buildError(error, name, compiler.context));
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173 | return;
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174 | }
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175 |
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176 | if (output.errors.length > 0) {
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177 | output.errors.forEach(error => {
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178 | compilation.errors.push(error);
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179 | });
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180 | return;
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181 | }
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182 |
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183 | output.source = new RawSource(output.code);
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184 | await cacheItem.storePromise({
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185 | source: output.source,
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186 | warnings: output.warnings
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187 | });
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188 | }
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189 |
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190 | const newInfo = {
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191 | minimized: true
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192 | };
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193 | const {
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194 | source,
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195 | warnings
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196 | } = output;
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197 |
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198 | if (warnings && warnings.length > 0) {
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199 | warnings.forEach(warning => {
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200 | compilation.warnings.push(warning);
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201 | });
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202 | }
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203 |
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204 | compilation.updateAsset(name, source, newInfo);
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205 | }));
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206 | }
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207 |
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208 | await Promise.all(scheduledTasks);
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209 |
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210 | if (initializedWorker) {
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211 | await initializedWorker.end();
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212 | }
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213 | }
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214 |
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215 | apply(compiler) {
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216 | const pluginName = this.constructor.name;
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217 | const availableNumberOfCores = HtmlMinimizerPlugin.getAvailableNumberOfCores(this.options.parallel);
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218 | compiler.hooks.compilation.tap(pluginName, compilation => {
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219 | compilation.hooks.processAssets.tapPromise({
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220 | name: pluginName,
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221 | stage: compiler.webpack.Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE_SIZE,
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222 | additionalAssets: true
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223 | }, assets => this.optimize(compiler, compilation, assets, {
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224 | availableNumberOfCores
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225 | }));
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226 | compilation.hooks.statsPrinter.tap(pluginName, stats => {
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227 | stats.hooks.print.for("asset.info.minimized").tap("html-minimizer-webpack-plugin", (minimized, {
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228 | green,
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229 | formatFlag
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230 | }) =>
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231 | minimized ? green(formatFlag("minimized")) : undefined);
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232 | });
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233 | });
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234 | }
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235 |
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236 | }
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237 |
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238 | HtmlMinimizerPlugin.htmlMinifierTerser = _utils.htmlMinifierTerser;
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239 | var _default = HtmlMinimizerPlugin;
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240 | exports.default = _default; |
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