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* as async from \"async\";\nimport * as fs from \"fs\";\nimport * as lodash from \"lodash\";\nimport * as path from \"path\";\nimport * as tmp from \"tmp\";\n\nimport { FilePattern } from \"karma\";\nimport { Logger } from \"log4js\";\n\nimport { EmitOutput } from \"../compiler/emit-output\";\nimport { Benchmark } from \"../shared/benchmark\";\nimport { Configuration } from \"../shared/configuration\";\nimport { File } from \"../shared/file\";\nimport PathTool = require(\"../shared/path-tool\");\nimport { Project } from \"../shared/project\";\nimport { BundleCallback } from \"./bundle-callback\";\nimport { BundleItem } from \"./bundle-item\";\nimport { DependencyWalker } from \"./dependency-walker\";\nimport { Globals } from \"./globals\";\nimport { Queued } from \"./queued\";\nimport { Resolver } from \"./resolve/resolver\";\nimport { SourceMap } from \"./source-map\";\nimport { Transformer } from \"./transformer\";\nimport { Validator } from \"./validator\";\n\nimport \"../client/commonjs\";\n\nexport class Bundler {\n\n private readonly BUNDLE_DELAY = 500;\n\n private bundleQueuedModulesDeferred = lodash.debounce(this.bundleQueuedModules, this.BUNDLE_DELAY);\n\n private bundleBuffer: BundleItem[] = [];\n private bundleFile = tmp.fileSync({\n postfix: \".js\",\n prefix: \"karma-typescript-bundle-\"\n });\n private bundleQueue: Queued[] = [];\n private entrypoints: string[] = [];\n private projectImportCountOnFirstRun: number = undefined;\n\n constructor(private config: Configuration,\n private dependencyWalker: DependencyWalker,\n private globals: Globals,\n private log: Logger,\n private project: Project,\n private resolver: Resolver,\n private sourceMap: SourceMap,\n private transformer: Transformer,\n private validator: Validator) { }\n\n public attach(files: FilePattern[]) {\n\n files.unshift({\n included: true,\n pattern: this.bundleFile.name,\n served: true,\n watched: true\n });\n\n files.push({\n included: true,\n pattern: path.join(__dirname, \"../../dist/client/commonjs.js\"),\n served: true,\n watched: false\n });\n }\n\n public bundle(file: File, emitOutput: EmitOutput, callback: BundleCallback) {\n this.bundleQueue.push({ callback, emitOutput, file });\n this.bundleQueuedModulesDeferred();\n }\n\n private bundleQueuedModules() {\n // Drain the bundle queue and keep a copy of the current items. This prevents problems\n // when a new bundle is queued while transformations are running.\n const queuedItems = this.bundleQueue.slice(0);\n this.bundleQueue.length = 0;\n\n const benchmark = new Benchmark();\n\n this.transformer.applyTsTransforms(queuedItems, () => {\n queuedItems.forEach((queued) => {\n\n const source = this.sourceMap.removeSourceMapComment(queued);\n const map = this.sourceMap.getSourceMap(queued);\n\n if (map) {\n // used by Karma to log errors with original source code line numbers\n queued.file.sourceMap = map.toObject();\n }\n\n queued.item = new BundleItem(\n queued.file.path, queued.file.originalPath, source, map);\n });\n\n const dependencyCount = this.dependencyWalker.collectTypescriptDependencies(queuedItems);\n\n if (this.shouldBundle(dependencyCount)) {\n this.bundleWithLoader(benchmark, queuedItems);\n }\n else {\n this.bundleWithoutLoader(queuedItems);\n }\n });\n }\n\n private shouldBundle(dependencyCount: number): boolean {\n if (this.config.hasPreprocessor(\"commonjs\")) {\n this.log.debug(\"Preprocessor 'commonjs' detected, code will NOT be bundled\");\n return false;\n }\n if (!this.project.hasCompatibleModuleKind()) {\n this.log.debug(\"Module kind set to '%s', code will NOT be bundled\", this.project.getModuleKind());\n return false;\n }\n if (this.projectImportCountOnFirstRun === undefined) {\n this.projectImportCountOnFirstRun = dependencyCount;\n }\n this.log.debug(\"Project has %s import/require statements, code will be%sbundled\",\n this.projectImportCountOnFirstRun, this.projectImportCountOnFirstRun > 0 ? \" \" : \" NOT \");\n return this.projectImportCountOnFirstRun > 0;\n }\n\n private bundleWithLoader(benchmark: Benchmark, queuedItems: Queued[]) {\n\n async.each(queuedItems, (queued, onQueuedResolved) => {\n\n this.addEntrypointFilename(queued.item.filename);\n\n async.each(queued.item.dependencies, (bundleItem, onDependencyResolved) => {\n this.resolver.resolveModule(queued.item.moduleName, bundleItem, this.bundleBuffer, () => {\n onDependencyResolved();\n });\n }, onQueuedResolved);\n }, () => {\n this.onAllResolved(benchmark, queuedItems);\n });\n }\n\n private bundleWithoutLoader(queuedItems: Queued[]) {\n this.globals.add(this.bundleBuffer, this.entrypoints, () => {\n this.writeMainBundleFile(() => {\n queuedItems.forEach((queued) => {\n const source = queued.item.source + \"\\n\" +\n (queued.item.sourceMap ? queued.item.sourceMap.toComment() + \"\\n\" : \"\");\n queued.callback(source);\n });\n });\n });\n }\n\n private onAllResolved(benchmark: Benchmark, queuedItems: Queued[]) {\n\n this.orderEntrypoints();\n\n this.globals.add(this.bundleBuffer, this.entrypoints, () => {\n this.writeMainBundleFile(() => {\n this.log.info(\"Bundled imports for %s file(s) in %s ms.\",\n queuedItems.length, benchmark.elapsed());\n\n queuedItems.forEach((queued) => {\n queued.callback(this.addLoaderFunction(queued.item, true));\n });\n\n this.log.debug(\"Karma callbacks for %s file(s) in %s ms.\",\n queuedItems.length, benchmark.elapsed());\n });\n });\n }\n\n private addLoaderFunction(bundleItem: BundleItem, standalone: boolean): string {\n\n const dependencyMap: { [key: string]: string; } = {};\n const moduleId = path.relative(this.config.karma.basePath, bundleItem.filename);\n\n bundleItem.dependencies.forEach((dependency) => {\n if (!dependency.filename) {\n this.log.debug(\"No resolved filename for module [%s], required by [%s]\",\n dependency.moduleName, bundleItem.filename);\n }\n else {\n dependencyMap[dependency.moduleName] = PathTool.fixWindowsPath(dependency.filename);\n }\n });\n\n return (standalone ? \"(function(global){\" : \"\") +\n \"global.wrappers['\" + PathTool.fixWindowsPath(bundleItem.filename) + \"']=\" +\n \"[function(require,module,exports,__dirname,__filename){ \" + bundleItem.source +\n \"\\n},'\" +\n PathTool.fixWindowsPath(moduleId) + \"',\" +\n PathTool.fixWindowsPath(JSON.stringify(dependencyMap)) + \"];\" +\n (standalone ? \"})(this);\" : \"\") + \"\\n\" +\n (bundleItem.sourceMap ? bundleItem.sourceMap.toComment() + \"\\n\" : \"\");\n }\n\n private createEntrypointFilenames() {\n if (this.entrypoints.length > 0) {\n return \"global.entrypointFilenames=['\" + this.entrypoints.join(\"','\") + \"'];\\n\";\n }\n return \"\";\n }\n\n private addEntrypointFilename(filename: string) {\n if (this.config.bundlerOptions.entrypoints.test(filename) &&\n this.entrypoints.indexOf(filename) === -1) {\n this.entrypoints.push(filename);\n }\n }\n\n private orderEntrypoints() {\n const orderedEntrypoints: string[] = [];\n this.project.getKarmaFiles().forEach((filename) => {\n if (this.entrypoints.indexOf(filename) !== -1) {\n orderedEntrypoints.push(filename);\n }\n });\n this.entrypoints = orderedEntrypoints;\n }\n\n private writeMainBundleFile(onMainBundleFileWritten: () => void ) {\n\n let bundle = \"(function(global){\\nglobal.wrappers={};\\n\";\n this.sourceMap.initialize(bundle);\n\n this.bundleBuffer.forEach((bundleItem) => {\n\n this.sourceMap.addFile(bundleItem);\n\n const wrapped = this.addLoaderFunction(bundleItem, false);\n bundle += wrapped;\n\n this.sourceMap.offsetLineNumber(wrapped);\n });\n\n bundle += this.createEntrypointFilenames() + \"})(this);\\n\";\n bundle += this.sourceMap.getComment();\n\n this.validator.validate(bundle, this.bundleFile.name);\n\n fs.writeFile(this.bundleFile.name, bundle, (error) => {\n if (error) {\n throw error;\n }\n onMainBundleFileWritten();\n });\n }\n}\n"]} |