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* @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\n// Must be imported first, because Angular decorators throw on load.\nimport 'reflect-metadata';\n\nimport {isSyntaxError, syntaxError} from '@angular/compiler';\nimport {MetadataBundler, createBundleIndexHost} from '@angular/tsc-wrapped';\nimport * as fs from 'fs';\nimport * as path from 'path';\nimport * as ts from 'typescript';\nimport * as api from './transformers/api';\nimport * as ng from './transformers/entry_points';\n\nconst TS_EXT = /\\.ts$/;\n\ntype Diagnostics = ts.Diagnostic[] | api.Diagnostic[];\n\nfunction isTsDiagnostics(diagnostics: any): diagnostics is ts.Diagnostic[] {\n return diagnostics && diagnostics[0] && (diagnostics[0].file || diagnostics[0].messageText);\n}\n\nfunction formatDiagnostics(cwd: string, diags: Diagnostics): string {\n if (diags && diags.length) {\n if (isTsDiagnostics(diags)) {\n return ts.formatDiagnostics(diags, {\n getCurrentDirectory: () => cwd,\n getCanonicalFileName: fileName => fileName,\n getNewLine: () => ts.sys.newLine\n });\n } else {\n return diags\n .map(d => {\n let res = api.DiagnosticCategory[d.category];\n if (d.span) {\n res +=\n ` at ${d.span.start.file.url}(${d.span.start.line + 1},${d.span.start.col + 1})`;\n }\n if (d.span && d.span.details) {\n res += `: ${d.span.details}, ${d.message}\\n`;\n } else {\n res += `: ${d.message}\\n`;\n }\n return res;\n })\n .join();\n }\n } else\n return '';\n}\n\nfunction check(cwd: string, ...args: Diagnostics[]) {\n if (args.some(diags => !!(diags && diags[0]))) {\n throw syntaxError(args.map(diags => {\n if (diags && diags[0]) {\n return formatDiagnostics(cwd, diags);\n }\n })\n .filter(message => !!message)\n .join(''));\n }\n}\n\nfunction syntheticError(message: string): ts.Diagnostic {\n return {\n file: null as any as ts.SourceFile,\n start: 0,\n length: 0,\n messageText: message,\n category: ts.DiagnosticCategory.Error,\n code: 0\n };\n}\n\nexport function readConfiguration(\n project: string, basePath: string, existingOptions?: ts.CompilerOptions) {\n // Allow a directory containing tsconfig.json as the project value\n // Note, TS@next returns an empty array, while earlier versions throw\n const projectFile =\n fs.lstatSync(project).isDirectory() ? path.join(project, 'tsconfig.json') : project;\n let {config, error} = ts.readConfigFile(projectFile, ts.sys.readFile);\n\n if (error) check(basePath, [error]);\n const parseConfigHost = {\n useCaseSensitiveFileNames: true,\n fileExists: fs.existsSync,\n readDirectory: ts.sys.readDirectory,\n readFile: ts.sys.readFile\n };\n const parsed = ts.parseJsonConfigFileContent(config, parseConfigHost, basePath, existingOptions);\n\n check(basePath, parsed.errors);\n\n // Default codegen goes to the current directory\n // Parsed options are already converted to absolute paths\n const ngOptions = config.angularCompilerOptions || {};\n // Ignore the genDir option\n ngOptions.genDir = basePath;\n\n return {parsed, ngOptions};\n}\n\nfunction getProjectDirectory(project: string): string {\n let isFile: boolean;\n try {\n isFile = fs.lstatSync(project).isFile();\n } catch (e) {\n // Project doesn't exist. Assume it is a file has an extension. This case happens\n // when the project file is passed to set basePath but no tsconfig.json file exists.\n // It is used in tests to ensure that the options can be passed in without there being\n // an actual config file.\n isFile = path.extname(project) !== '';\n }\n\n // If project refers to a file, the project directory is the file's parent directory\n // otherwise project is the project directory.\n return isFile ? path.dirname(project) : project;\n}\n\nexport function performCompilation(\n basePath: string, files: string[], options: ts.CompilerOptions, ngOptions: any,\n consoleError: (s: string) => void = console.error, tsCompilerHost?: ts.CompilerHost) {\n try {\n ngOptions.basePath = basePath;\n ngOptions.genDir = basePath;\n\n let host = tsCompilerHost || ts.createCompilerHost(options, true);\n host.realpath = p => p;\n\n const rootFileNames = files.map(f => path.normalize(f));\n\n const addGeneratedFileName = (fileName: string) => {\n if (fileName.startsWith(basePath) && TS_EXT.exec(fileName)) {\n rootFileNames.push(fileName);\n }\n };\n\n if (ngOptions.flatModuleOutFile && !ngOptions.skipMetadataEmit) {\n const {host: bundleHost, indexName, errors} =\n createBundleIndexHost(ngOptions, rootFileNames, host);\n if (errors) check(basePath, errors);\n if (indexName) addGeneratedFileName(indexName);\n host = bundleHost;\n }\n\n const ngHostOptions = {...options, ...ngOptions};\n const ngHost = ng.createHost({tsHost: host, options: ngHostOptions});\n\n const ngProgram =\n ng.createProgram({rootNames: rootFileNames, host: ngHost, options: ngHostOptions});\n\n // Check parameter diagnostics\n check(basePath, ngProgram.getTsOptionDiagnostics(), ngProgram.getNgOptionDiagnostics());\n\n // Check syntactic diagnostics\n check(basePath, ngProgram.getTsSyntacticDiagnostics());\n\n // Check TypeScript semantic and Angular structure diagnostics\n check(basePath, ngProgram.getTsSemanticDiagnostics(), ngProgram.getNgStructuralDiagnostics());\n\n // Check Angular semantic diagnostics\n check(basePath, ngProgram.getNgSemanticDiagnostics());\n\n ngProgram.emit({\n emitFlags: api.EmitFlags.Default |\n ((ngOptions.skipMetadataEmit || ngOptions.flatModuleOutFile) ? 0 : api.EmitFlags.Metadata)\n });\n } catch (e) {\n if (isSyntaxError(e)) {\n console.error(e.message);\n consoleError(e.message);\n return 1;\n }\n }\n\n return 0;\n}\n\n\nexport function main(args: string[], consoleError: (s: string) => void = console.error): number {\n try {\n const parsedArgs = require('minimist')(args);\n const project = parsedArgs.p || parsedArgs.project || '.';\n\n const projectDir = fs.lstatSync(project).isFile() ? path.dirname(project) : project;\n\n // file names in tsconfig are resolved relative to this absolute path\n const basePath = path.resolve(process.cwd(), projectDir);\n const {parsed, ngOptions} = readConfiguration(project, basePath);\n return performCompilation(basePath, parsed.fileNames, parsed.options, ngOptions, consoleError);\n } catch (e) {\n consoleError(e.stack);\n consoleError('Compilation failed');\n return 2;\n }\n}\n\n// CLI entry point\nif (require.main === module) {\n process.exit(main(process.argv.slice(2), s => console.error(s)));\n}\n"]}
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