mirror of https://github.com/webpack/webpack.git
782 lines
22 KiB
JavaScript
782 lines
22 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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var async = require("async");
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var Tapable = require("tapable");
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var Parser = require("./Parser");
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var Dependency = require("./Dependency");
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var EntryModuleNotFoundError = require("./EntryModuleNotFoundError");
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var ModuleNotFoundError = require("./ModuleNotFoundError");
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var CriticalDependenciesWarning = require("./CriticalDependenciesWarning");
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var Module = require("./Module");
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var ArrayMap = require("./ArrayMap");
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var Chunk = require("./Chunk");
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var Stats = require("./Stats");
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var Template = require("./Template");
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var MainTemplate = require("./MainTemplate");
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var ChunkTemplate = require("./ChunkTemplate");
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var HotUpdateChunkTemplate = require("./HotUpdateChunkTemplate");
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var ModuleTemplate = require("./ModuleTemplate");
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function Compilation(compiler) {
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Tapable.call(this);
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this.compiler = compiler;
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this.resolvers = compiler.resolvers;
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this.inputFileSystem = compiler.inputFileSystem;
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var options = this.options = compiler.options;
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this.outputOptions = options && options.output;
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this.bail = options && options.bail;
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this.profile = options && options.profile;
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this.mainTemplate = new MainTemplate(this.outputOptions);
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this.chunkTemplate = new ChunkTemplate(this.outputOptions);
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this.hotUpdateChunkTemplate = new HotUpdateChunkTemplate(this.outputOptions);
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this.moduleTemplate = new ModuleTemplate(this.outputOptions);
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this.entries = [];
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this.preparedChunks = [];
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this.chunks = [];
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this.namedChunks = {};
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this.modules = [];
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this._modules = {};
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this.cache = null;
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this.records = null;
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this.nextFreeModuleId = 1;
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this.nextFreeChunkId = 0;
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this.additionalChunkAssets = [];
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this.assets = {};
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this.errors = [];
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this.warnings = [];
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this.children = [];
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this.dependencyFactories = new ArrayMap();
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this.dependencyTemplates = new ArrayMap();
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}
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module.exports = Compilation;
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Compilation.prototype = Object.create(Tapable.prototype);
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Compilation.prototype.addModule = function(module, cacheGroup) {
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cacheGroup = cacheGroup || "m";
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var identifier = module.identifier();
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if(this._modules[identifier]) {
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return false;
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}
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if(this.cache && this.cache[cacheGroup + identifier]) {
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var cacheModule = this.cache[cacheGroup + identifier];
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var rebuild = true;
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if(!cacheModule.error && cacheModule.cacheable && this.fileTimestamps && this.contextTimestamps) {
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rebuild = cacheModule.needRebuild(this.fileTimestamps, this.contextTimestamps);
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}
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if(!rebuild) {
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cacheModule.disconnect();
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this._modules[identifier] = cacheModule;
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this.modules.push(cacheModule);
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cacheModule.errors.forEach(function(err) {
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this.errors.push(err);
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}, this);
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cacheModule.warnings.forEach(function(err) {
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this.warnings.push(err);
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}, this);
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return cacheModule;
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} else {
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module.lastId = cacheModule.id;
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}
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}
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this._modules[identifier] = module;
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if(this.cache) {
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this.cache[cacheGroup + identifier] = module;
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}
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this.modules.push(module);
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return true;
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};
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Compilation.prototype.getModule = function(module) {
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var identifier = module.identifier();
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return this._modules[identifier];
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};
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Compilation.prototype.findModule = function(identifier) {
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return this._modules[identifier];
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};
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Compilation.prototype.buildModule = function(module, thisCallback) {
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this.applyPlugins("build-module", module);
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if(module.building) return module.building.push(thisCallback);
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var building = module.building = [thisCallback];
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function callback(err) {
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module.building = undefined;
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building.forEach(function(cb) {
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cb(err);
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});
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}
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module.build(this.options, this, this.resolvers.normal, this.inputFileSystem, function(err) {
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module.errors.forEach(function(err) {
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this.errors.push(err);
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}, this);
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module.warnings.forEach(function(err) {
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this.warnings.push(err);
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}, this);
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if(err) {
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module.error = err;
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this.applyPlugins("failed-module", module);
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return callback(err);
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}
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this.applyPlugins("succeed-module", module);
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return callback();
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}.bind(this));
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};
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Compilation.prototype.processModuleDependencies = function(module, callback) {
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var dependencies = [];
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function addDependency(dep) {
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for(var i = 0; i < dependencies.length; i++) {
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if(dep.isEqualResource(dependencies[i][0])) {
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return dependencies[i].push(dep);
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}
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}
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dependencies.push([dep]);
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}
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function addDependenciesBlock(block) {
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if(block.dependencies) {
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block.dependencies.forEach(addDependency);
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}
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if(block.blocks) {
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block.blocks.forEach(addDependenciesBlock);
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}
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if(block.variables) {
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block.variables.forEach(function(v) {
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v.dependencies.forEach(addDependency);
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});
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}
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}
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addDependenciesBlock(module);
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this.addModuleDependencies(module, dependencies, this.bail, null, true, callback);
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};
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Compilation.prototype.addModuleDependencies = function(module, dependencies, bail, cacheGroup, recursive, callback) {
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var factories = [];
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for(var i = 0; i < dependencies.length; i++) {
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var factory = this.dependencyFactories.get(dependencies[i][0].Class);
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if(!factory) {
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return callback(new Error("No module factory availible for dependency type: " + dependencies[i][0].Class.name));
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}
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factories[i] = [factory, dependencies[i]];
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}
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async.forEach(factories, function(item, callback) {
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var dependencies = item[1];
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var criticalDependencies = dependencies.filter(function(d) {
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return !!d.critical;
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});
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if(criticalDependencies.length > 0) {
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this.warnings.push(new CriticalDependenciesWarning(module, criticalDependencies));
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}
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var errorAndCallback = function errorAndCallback(err) {
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err.dependencies = dependencies;
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err.origin = module;
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module.dependenciesErrors.push(err);
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this.errors.push(err);
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if(bail) {
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callback(err);
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} else {
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callback();
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}
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}.bind(this);
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var warningAndCallback = function warningAndCallback(err) {
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err.dependencies = dependencies;
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err.origin = module;
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module.dependenciesWarnings.push(err);
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this.warnings.push(err);
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callback();
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}.bind(this);
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var factory = item[0];
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var start = this.profile && +new Date();
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factory.create(module.context, dependencies[0], function(err, dependantModule) {
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function isOptional() {
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return dependencies.filter(function(d) {
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return !d.optional;
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}).length === 0;
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}
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function errorOrWarningAndCallback(err) {
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if(isOptional()) {
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return warningAndCallback(err);
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} else {
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return errorAndCallback(err);
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}
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}
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if(err) {
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return errorOrWarningAndCallback(new ModuleNotFoundError(module, err));
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}
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if(!dependantModule) {
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return callback();
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}
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if(this.profile) {
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if(!dependantModule.profile) {
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dependantModule.profile = {};
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}
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var afterFactory = +new Date();
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dependantModule.profile.factory = afterFactory - start;
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}
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dependantModule.issuer = module.identifier();
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var newModule = this.addModule(dependantModule, cacheGroup);
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if(!newModule) { // from cache
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dependantModule = this.getModule(dependantModule);
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if(dependantModule.optional) {
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dependantModule.optional = isOptional();
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}
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if(dependantModule.id === 0) {
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return errorOrWarningAndCallback(
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new ModuleNotFoundError(module, new Error("a dependency to an entry point is not allowed"))
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);
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}
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dependencies.forEach(function(dep) {
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dep.module = dependantModule;
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dependantModule.addReason(module, dep);
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});
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if(this.profile) {
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if(!module.profile) {
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module.profile = {};
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}
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var time = +new Date() - start;
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if(!module.profile.dependencies || time > module.profile.dependencies) {
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module.profile.dependencies = time;
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}
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}
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return callback();
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}
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if(newModule instanceof Module) {
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if(this.profile) {
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newModule.profile = dependantModule.profile;
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}
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newModule.optional = isOptional();
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newModule.issuer = dependantModule.issuer;
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dependantModule = newModule;
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dependencies.forEach(function(dep) {
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dep.module = dependantModule;
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dependantModule.addReason(module, dep);
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});
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if(recursive) {
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return this.processModuleDependencies(dependantModule, callback);
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} else {
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return callback();
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}
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}
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dependantModule.optional = isOptional();
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dependencies.forEach(function(dep) {
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dep.module = dependantModule;
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dependantModule.addReason(module, dep);
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});
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this.buildModule(dependantModule, function(err) {
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if(err) {
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return errorOrWarningAndCallback(err);
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}
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if(this.profile) {
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var afterBuilding = +new Date();
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dependantModule.profile.building = afterBuilding - afterFactory;
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}
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if(recursive) {
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this.processModuleDependencies(dependantModule, callback);
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} else {
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return callback();
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}
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}.bind(this));
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}.bind(this));
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}.bind(this), function(err) {
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if(err) {
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return callback(err);
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}
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return callback();
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});
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};
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Compilation.prototype._addModuleChain = function process(context, dependency, onModule, callback) {
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var errorAndCallback = this.bail ? function errorAndCallback(err) {
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callback(err);
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} : function errorAndCallback(err) {
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err.dependencies = [dependency];
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this.errors.push(err);
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callback();
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}.bind(this);
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if(typeof dependency !== "object" || dependency === null || !dependency.Class) {
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throw new Error("Parameter 'dependency' must be a Dependency");
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}
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var moduleFactory = this.dependencyFactories.get(dependency.Class);
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if(!moduleFactory) {
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throw new Error("No dependency factory availible for this dependency type: " + dependency.Class.name);
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}
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var start = this.profile && +new Date();
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moduleFactory.create(context, dependency, function(err, module) {
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if(err) {
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return errorAndCallback(new EntryModuleNotFoundError(err));
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}
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if(this.profile) {
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if(!module.profile) {
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module.profile = {};
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}
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var afterFactory = +new Date();
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module.profile.factory = afterFactory - start;
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}
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var result = this.addModule(module);
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if(!result) {
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module = this.getModule(module);
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onModule(module);
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return callback(null, module);
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}
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if(result instanceof Module) {
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if(this.profile) {
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result.profile = module.profile;
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}
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module = result;
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}
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onModule(module);
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if(result instanceof Module) {
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moduleReady.call(this);
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} else {
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this.buildModule(module, function(err) {
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if(err) {
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return errorAndCallback(err);
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}
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if(this.profile) {
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var afterBuilding = +new Date();
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module.profile.building = afterBuilding - afterFactory;
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}
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moduleReady.call(this);
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}.bind(this));
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}
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function moduleReady() {
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this.processModuleDependencies(module, function(err) {
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if(err) {
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return callback(err);
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}
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return callback(null, module);
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}.bind(this));
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}
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}.bind(this));
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};
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Compilation.prototype.addEntry = function process(context, entry, name, callback) {
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this._addModuleChain(context, entry, function(module) {
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entry.module = module;
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this.entries.push(module);
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module.id = 0;
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}.bind(this), function(err, module) {
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if(err) {
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return callback(err);
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}
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if(module) {
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if(module.reasons.length > 0) {
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return callback(new Error("module cannot be added as entry point, because its already in the bundle"));
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}
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this.preparedChunks.push({
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name: name,
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module: module
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});
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}
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return callback();
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}.bind(this));
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};
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Compilation.prototype.prefetch = function process(context, dependency, callback) {
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this._addModuleChain(context, dependency, function(module) {
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module.prefetched = true;
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}, callback);
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};
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Compilation.prototype.rebuildModule = function(module, thisCallback) {
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if(module.variables.length || module.blocks.length)
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throw new Error("Cannot rebuild a complex module with variables or blocks");
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if(module.rebuilding) {
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return module.rebuilding.push(thisCallback);
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}
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var rebuilding = module.rebuilding = [thisCallback];
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function callback(err) {
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module.rebuilding = undefined;
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rebuilding.forEach(function(cb) {
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cb(err);
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});
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}
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var deps = module.dependencies.slice();
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this.buildModule(module, function(err) {
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if(err) return callback(err);
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this.processModuleDependencies(module, function(err) {
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if(err) return callback(err);
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deps.forEach(function(d) {
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if(d.module && d.module.removeReason(module, d)) {
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module.chunks.forEach(function(chunk) {
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if(!d.module.hasReasonForChunk(chunk)) {
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if(d.module.removeChunk(chunk)) {
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this.removeChunkFromDependencies(d.module, chunk);
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}
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}
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}, this);
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}
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}, this);
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callback();
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}.bind(this));
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}.bind(this));
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};
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Compilation.prototype.seal = function seal(callback) {
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this.applyPlugins("seal");
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this.preparedChunks.forEach(function(preparedChunk) {
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var module = preparedChunk.module;
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var chunk = this.addChunk(preparedChunk.name, module);
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chunk.initial = chunk.entry = true;
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chunk.addModule(module);
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module.addChunk(chunk);
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this.processDependenciesBlockForChunk(module, chunk);
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}, this);
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this.applyPlugins("optimize");
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this.applyPlugins("optimize-modules", this.modules);
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this.applyPlugins("after-optimize-modules", this.modules);
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this.applyPlugins("optimize-chunks", this.chunks);
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this.applyPlugins("after-optimize-chunks", this.chunks);
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this.applyPluginsAsync("optimize-tree", this.chunks, this.modules, function(err) {
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if(err) {
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return callback(err);
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}
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this.applyPlugins("revive-modules", this.modules, this.records);
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this.applyPlugins("optimize-module-order", this.modules);
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this.applyModuleIds();
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this.applyPlugins("optimize-module-ids", this.modules);
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this.applyPlugins("after-optimize-module-ids", this.modules);
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this.applyPlugins("record-modules", this.modules, this.records);
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this.applyPlugins("revive-chunks", this.chunks, this.records);
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this.applyPlugins("optimize-chunk-order", this.chunks);
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this.applyChunkIds();
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this.applyPlugins("optimize-chunk-ids", this.chunks);
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this.applyPlugins("after-optimize-chunk-ids", this.chunks);
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this.applyPlugins("record-chunks", this.chunks, this.records);
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this.sortItems();
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this.applyPlugins("before-hash");
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this.createHash();
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this.applyPlugins("after-hash");
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this.applyPlugins("before-chunk-assets");
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this.createChunkAssets();
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this.applyPlugins("additional-chunk-assets", this.chunks);
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this.summarizeDependencies();
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this.applyPlugins("record", this, this.records);
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this.applyPluginsAsync("additional-assets", function(err) {
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if(err) {
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return callback(err);
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}
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this.applyPluginsAsync("optimize-chunk-assets", this.chunks, function(err) {
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if(err) {
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return callback(err);
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}
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this.applyPlugins("after-optimize-chunk-assets", this.chunks);
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this.applyPluginsAsync("optimize-assets", this.assets, function(err) {
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if(err) {
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return callback(err);
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}
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this.applyPlugins("after-optimize-assets", this.assets);
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return callback();
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}.bind(this));
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}.bind(this));
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}.bind(this));
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}.bind(this));
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};
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Compilation.prototype.addChunk = function addChunk(name, module, loc) {
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var chunk;
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if(name) {
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if(Object.prototype.hasOwnProperty.call(this.namedChunks, name)) {
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chunk = this.namedChunks[name];
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if(module) {
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chunk.addOrigin(module, loc);
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}
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return chunk;
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}
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}
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chunk = new Chunk(name, module, loc);
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this.chunks.push(chunk);
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if(name) {
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this.namedChunks[name] = chunk;
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}
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return chunk;
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};
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Compilation.prototype.processDependenciesBlockForChunk = function processDependenciesBlockForChunk(block, chunk) {
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block.blocks.forEach(function(b) {
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var c;
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if(!b.chunk) {
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c = this.addChunk(b.chunkName, b.module, b.loc);
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|
b.chunk = c;
|
|
c.addBlock(b);
|
|
} else {
|
|
c = b.chunk;
|
|
}
|
|
chunk.addChunk(c);
|
|
c.addParent(chunk);
|
|
this.processDependenciesBlockForChunk(b, c);
|
|
}, this);
|
|
function iteratorDependency(d) {
|
|
if(!d.module) {
|
|
return;
|
|
}
|
|
if(d.module.error) {
|
|
d.module = null;
|
|
return;
|
|
}
|
|
if(chunk.addModule(d.module)) {
|
|
d.module.addChunk(chunk);
|
|
this.processDependenciesBlockForChunk(d.module, chunk);
|
|
}
|
|
}
|
|
block.dependencies.forEach(iteratorDependency, this);
|
|
block.variables.forEach(function(v) {
|
|
v.dependencies.forEach(iteratorDependency, this);
|
|
}, this);
|
|
};
|
|
|
|
Compilation.prototype.removeChunkFromDependencies = function removeChunkFromDependencies(block, chunk) {
|
|
block.blocks.forEach(function(b) {
|
|
var c = b.chunk;
|
|
chunk.removeChunk(c);
|
|
c.removeParent(chunk);
|
|
this.removeChunkFromDependencies(b, c);
|
|
}, this);
|
|
function iteratorDependency(d) {
|
|
if(!d.module) {
|
|
return;
|
|
}
|
|
if(!d.module.hasReasonForChunk(chunk)) {
|
|
if(d.module.removeChunk(chunk)) {
|
|
this.removeChunkFromDependencies(d.module, chunk);
|
|
}
|
|
}
|
|
}
|
|
block.dependencies.forEach(iteratorDependency, this);
|
|
block.variables.forEach(function(v) {
|
|
v.dependencies.forEach(iteratorDependency, this);
|
|
}, this);
|
|
|
|
};
|
|
|
|
Compilation.prototype.applyModuleIds = function applyModuleIds() {
|
|
this.modules.forEach(function(module) {
|
|
if(module.id === null) {
|
|
module.id = this.nextFreeModuleId++;
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
Compilation.prototype.applyChunkIds = function applyChunkIds() {
|
|
this.chunks.forEach(function(chunk) {
|
|
if(chunk.id === null) {
|
|
chunk.id = this.nextFreeChunkId++;
|
|
}
|
|
if(!chunk.ids) {
|
|
chunk.ids = [chunk.id];
|
|
}
|
|
}, this);
|
|
};
|
|
|
|
Compilation.prototype.sortItems = function sortItems() {
|
|
function byId(a, b) {
|
|
return a.id - b.id;
|
|
}
|
|
this.chunks.sort(byId);
|
|
this.modules.sort(byId);
|
|
this.modules.forEach(function(module) {
|
|
module.chunks.sort(byId);
|
|
module.reasons.sort(function(a, b) {
|
|
return byId(a.module, b.module)
|
|
});
|
|
});
|
|
this.chunks.forEach(function(chunk) {
|
|
chunk.modules.sort(byId);
|
|
});
|
|
};
|
|
|
|
Compilation.prototype.summarizeDependencies = function summarizeDependencies() {
|
|
function filterDups(array) {
|
|
var newArray = [];
|
|
for(var i = 0; i < array.length; i++) {
|
|
if(i === 0 || array[i-1] !== array[i])
|
|
newArray.push(array[i]);
|
|
}
|
|
return newArray;
|
|
}
|
|
this.fileDependencies = [];
|
|
this.contextDependencies = [];
|
|
this.children.forEach(function(child) {
|
|
this.fileDependencies = this.fileDependencies.concat(child.fileDependencies);
|
|
this.contextDependencies = this.contextDependencies.concat(child.contextDependencies);
|
|
}.bind(this));
|
|
this.modules.forEach(function(module) {
|
|
if(module.fileDependencies) {
|
|
module.fileDependencies.forEach(function(item) {
|
|
this.fileDependencies.push(item);
|
|
}, this);
|
|
}
|
|
if(module.contextDependencies) {
|
|
module.contextDependencies.forEach(function(item) {
|
|
this.contextDependencies.push(item);
|
|
}, this);
|
|
}
|
|
}, this);
|
|
this.fileDependencies.sort();
|
|
this.fileDependencies = filterDups(this.fileDependencies);
|
|
this.contextDependencies.sort();
|
|
this.contextDependencies = filterDups(this.contextDependencies);
|
|
};
|
|
|
|
Compilation.prototype.createHash = function createHash() {
|
|
var outputOptions = this.outputOptions;
|
|
var hashFunction = outputOptions.hashFunction;
|
|
var hashDigest = outputOptions.hashDigest;
|
|
var hashDigestLength = outputOptions.hashDigestLength;
|
|
var hash = require("crypto").createHash(hashFunction);
|
|
this.mainTemplate.updateHash(hash);
|
|
this.chunkTemplate.updateHash(hash);
|
|
this.moduleTemplate.updateHash(hash);
|
|
var i, chunk;
|
|
for(i = 0; i < this.chunks.length; i++) {
|
|
var chunk = this.chunks[i];
|
|
var chunkHash = require("crypto").createHash(hashFunction);
|
|
chunk.updateHash(chunkHash);
|
|
this.chunkTemplate.updateHash(chunkHash);
|
|
chunk.hash = chunkHash.digest(hashDigest);
|
|
hash.update(chunk.hash);
|
|
chunk.renderedHash = chunk.hash.substr(0, hashDigestLength);
|
|
}
|
|
this.fullHash = hash.digest(hashDigest);
|
|
this.hash = this.fullHash.substr(0, hashDigestLength);
|
|
};
|
|
|
|
Compilation.prototype.modifyHash = function modifyHash(update) {
|
|
var outputOptions = this.outputOptions;
|
|
var hashFunction = outputOptions.hashFunction;
|
|
var hashDigest = outputOptions.hashDigest;
|
|
var hashDigestLength = outputOptions.hashDigestLength;
|
|
var hash = require("crypto").createHash(hashFunction);
|
|
hash.update(this.fullHash);
|
|
hash.update(update);
|
|
this.fullHash = hash.digest(hashDigest);
|
|
this.hash = this.fullHash.substr(0, hashDigestLength);
|
|
};
|
|
|
|
Compilation.prototype.createChunkAssets = function createChunkAssets() {
|
|
var outputOptions = this.outputOptions;
|
|
var filename = outputOptions.filename || "bundle.js";
|
|
var chunkFilename = outputOptions.chunkFilename || "[id]." + filename;
|
|
var namedChunkFilename = outputOptions.namedChunkFilename || null;
|
|
for(var i = 0; i < this.modules.length; i++) {
|
|
var module = this.modules[i];
|
|
if(module.assets) {
|
|
Object.keys(module.assets).forEach(function(name) {
|
|
var file = name.replace(Template.REGEXP_HASH, this.hash);
|
|
this.assets[file] = module.assets[name];
|
|
this.applyPlugins("module-asset", module, file);
|
|
}, this);
|
|
}
|
|
}
|
|
for(var i = 0; i < this.chunks.length; i++) {
|
|
var chunk = this.chunks[i];
|
|
chunk.files = [];
|
|
var chunkHash = chunk.hash;
|
|
var source;
|
|
var file;
|
|
var filenameTemplate = chunk.filenameTemplate ? chunk.filenameTemplate :
|
|
chunk.initial ? filename :
|
|
chunkFilename;
|
|
var usedHash = !chunk.entry || (this.mainTemplate.useChunkHash && this.mainTemplate.useChunkHash(chunk)) ? chunkHash : this.fullHash;
|
|
if(this.cache && this.cache["c" + chunk.id] && this.cache["c" + chunk.id].hash === usedHash) {
|
|
source = this.cache["c" + chunk.id].source;
|
|
} else {
|
|
if(chunk.entry) {
|
|
source = this.mainTemplate.render(this.hash, chunk, this.moduleTemplate, this.dependencyTemplates);
|
|
} else {
|
|
source = this.chunkTemplate.render(chunk, this.moduleTemplate, this.dependencyTemplates);
|
|
}
|
|
if(this.cache) {
|
|
this.cache["c" + chunk.id] = {
|
|
hash: usedHash,
|
|
source: source
|
|
}
|
|
}
|
|
}
|
|
this.assets[
|
|
file = filenameTemplate
|
|
.replace(Template.REGEXP_HASH, this.hash)
|
|
.replace(Template.REGEXP_CHUNKHASH, chunk.renderedHash)
|
|
.replace(Template.REGEXP_ID, chunk.id)
|
|
.replace(Template.REGEXP_NAME, chunk.name || chunk.id)
|
|
] = source;
|
|
chunk.files.push(file);
|
|
this.applyPlugins("chunk-asset", chunk, file);
|
|
if(chunk.id !== 0 && namedChunkFilename && chunk.name) {
|
|
this.assets[
|
|
file = namedChunkFilename
|
|
.replace(Template.REGEXP_CHUNKHASH, chunk.renderedHash)
|
|
.replace(Template.REGEXP_HASH, this.hash)
|
|
.replace(Template.REGEXP_ID, chunk.id)
|
|
.replace(Template.REGEXP_NAME, chunk.name || chunk.id)
|
|
] = source;
|
|
chunk.files.push(file);
|
|
this.applyPlugins("chunk-asset", chunk, file);
|
|
}
|
|
}
|
|
};
|
|
|
|
Compilation.prototype.getStats = function() {
|
|
return new Stats(this);
|
|
};
|
|
|
|
Compilation.prototype.createChildCompiler = function(name, outputOptions) {
|
|
return this.compiler.createChildCompiler(this, name, outputOptions);
|
|
};
|