1 | "use strict";
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2 |
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3 | const fs = require('fs');
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4 |
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5 | const path = require('path');
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6 |
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7 | const _ = require('lodash');
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8 |
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9 | const gzipSize = require('gzip-size');
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10 |
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11 | const Logger = require('./Logger');
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12 |
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13 | const Folder = require('./tree/Folder').default;
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14 |
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15 | const {
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16 | parseBundle
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17 | } = require('./parseUtils');
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18 |
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19 | const {
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20 | createAssetsFilter
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21 | } = require('./utils');
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22 |
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23 | const FILENAME_QUERY_REGEXP = /\?.*$/u;
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24 | const FILENAME_EXTENSIONS = /\.(js|mjs)$/iu;
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25 | module.exports = {
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26 | getViewerData,
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27 | readStatsFromFile
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28 | };
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29 |
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30 | function getViewerData(bundleStats, bundleDir, opts) {
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31 | const {
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32 | logger = new Logger(),
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33 | excludeAssets = null
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34 | } = opts || {};
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35 | const isAssetIncluded = createAssetsFilter(excludeAssets);
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36 |
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37 | if (_.isEmpty(bundleStats.assets) && !_.isEmpty(bundleStats.children)) {
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38 | const {
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39 | children
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40 | } = bundleStats;
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41 | bundleStats = bundleStats.children[0];
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42 |
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43 |
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44 | for (let i = 1; i < children.length; i++) {
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45 | children[i].assets.forEach(asset => {
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46 | asset.isChild = true;
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47 | bundleStats.assets.push(asset);
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48 | });
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49 | }
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50 | } else if (!_.isEmpty(bundleStats.children)) {
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51 |
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52 | bundleStats.children.forEach(child => {
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53 | child.assets.forEach(asset => {
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54 | asset.isChild = true;
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55 | bundleStats.assets.push(asset);
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56 | });
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57 | });
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58 | }
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59 |
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60 |
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61 | bundleStats.assets = bundleStats.assets.filter(asset => {
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62 |
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63 | if (asset.type && asset.type !== 'asset') {
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64 | return false;
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65 | }
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66 |
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67 |
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68 |
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69 | asset.name = asset.name.replace(FILENAME_QUERY_REGEXP, '');
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70 | return FILENAME_EXTENSIONS.test(asset.name) && !_.isEmpty(asset.chunks) && isAssetIncluded(asset.name);
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71 | });
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72 |
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73 | let bundlesSources = null;
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74 | let parsedModules = null;
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75 |
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76 | if (bundleDir) {
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77 | bundlesSources = {};
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78 | parsedModules = {};
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79 |
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80 | for (const statAsset of bundleStats.assets) {
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81 | const assetFile = path.join(bundleDir, statAsset.name);
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82 | let bundleInfo;
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83 |
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84 | try {
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85 | bundleInfo = parseBundle(assetFile);
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86 | } catch (err) {
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87 | const msg = err.code === 'ENOENT' ? 'no such file' : err.message;
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88 | logger.warn(`Error parsing bundle asset "${assetFile}": ${msg}`);
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89 | continue;
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90 | }
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91 |
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92 | bundlesSources[statAsset.name] = _.pick(bundleInfo, 'src', 'runtimeSrc');
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93 | Object.assign(parsedModules, bundleInfo.modules);
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94 | }
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95 |
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96 | if (_.isEmpty(bundlesSources)) {
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97 | bundlesSources = null;
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98 | parsedModules = null;
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99 | logger.warn('\nNo bundles were parsed. Analyzer will show only original module sizes from stats file.\n');
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100 | }
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101 | }
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102 |
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103 | const assets = bundleStats.assets.reduce((result, statAsset) => {
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104 |
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105 | const assetBundles = statAsset.isChild ? getChildAssetBundles(bundleStats, statAsset.name) : bundleStats;
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106 | const modules = assetBundles ? getBundleModules(assetBundles) : [];
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107 |
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108 | const asset = result[statAsset.name] = _.pick(statAsset, 'size');
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109 |
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110 | const assetSources = bundlesSources && _.has(bundlesSources, statAsset.name) ? bundlesSources[statAsset.name] : null;
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111 |
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112 | if (assetSources) {
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113 | asset.parsedSize = Buffer.byteLength(assetSources.src);
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114 | asset.gzipSize = gzipSize.sync(assetSources.src);
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115 | }
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116 |
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117 |
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118 | const assetModules = modules.filter(statModule => assetHasModule(statAsset, statModule));
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119 |
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120 | if (parsedModules) {
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121 | const unparsedEntryModules = [];
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122 |
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123 | for (const statModule of assetModules) {
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124 | if (parsedModules[statModule.id]) {
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125 | statModule.parsedSrc = parsedModules[statModule.id];
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126 | } else if (isEntryModule(statModule)) {
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127 | unparsedEntryModules.push(statModule);
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128 | }
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129 | }
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130 |
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131 |
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132 |
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133 |
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134 | if (unparsedEntryModules.length && assetSources) {
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135 | if (unparsedEntryModules.length === 1) {
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136 |
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137 |
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138 | unparsedEntryModules[0].parsedSrc = assetSources.runtimeSrc;
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139 | } else {
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140 |
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141 | _.pullAll(assetModules, unparsedEntryModules);
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142 |
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143 | assetModules.unshift({
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144 | identifier: './entry modules',
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145 | name: './entry modules',
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146 | modules: unparsedEntryModules,
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147 | size: unparsedEntryModules.reduce((totalSize, module) => totalSize + module.size, 0),
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148 | parsedSrc: assetSources.runtimeSrc
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149 | });
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150 | }
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151 | }
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152 | }
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153 |
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154 | asset.modules = assetModules;
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155 | asset.tree = createModulesTree(asset.modules);
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156 | return result;
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157 | }, {});
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158 | return Object.entries(assets).map(([filename, asset]) => ({
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159 | label: filename,
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160 | isAsset: true,
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161 |
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162 |
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163 |
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164 |
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165 | statSize: asset.tree.size || asset.size,
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166 | parsedSize: asset.parsedSize,
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167 | gzipSize: asset.gzipSize,
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168 | groups: _.invokeMap(asset.tree.children, 'toChartData')
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169 | }));
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170 | }
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171 |
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172 | function readStatsFromFile(filename) {
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173 | return JSON.parse(fs.readFileSync(filename, 'utf8'));
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174 | }
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175 |
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176 | function getChildAssetBundles(bundleStats, assetName) {
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177 | return (bundleStats.children || []).find(c => _(c.assetsByChunkName).values().flatten().includes(assetName));
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178 | }
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179 |
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180 | function getBundleModules(bundleStats) {
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181 | return _(bundleStats.chunks).map('modules').concat(bundleStats.modules).compact().flatten().uniqBy('id')
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182 | .reject(isRuntimeModule).value();
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183 | }
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184 |
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185 | function assetHasModule(statAsset, statModule) {
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186 |
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187 | return statModule.chunks.some(moduleChunk => statAsset.chunks.includes(moduleChunk));
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188 | }
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189 |
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190 | function isEntryModule(statModule) {
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191 | return statModule.depth === 0;
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192 | }
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193 |
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194 | function isRuntimeModule(statModule) {
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195 | return statModule.moduleType === 'runtime';
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196 | }
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197 |
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198 | function createModulesTree(modules) {
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199 | const root = new Folder('.');
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200 | modules.forEach(module => root.addModule(module));
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201 | root.mergeNestedFolders();
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202 | return root;
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203 | } |
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