Prune the old deploy code. This CL does a few changes:

pkg/polymer/lib/src/compiler.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library compiler;
 
 import 'dart:async';
 import 'dart:collection' show SplayTreeMap;
 import 'dart:json' as json;
 
 import 'package:analyzer_experimental/src/generated/ast.dart' show Directive, UriBasedDirective;
 import 'package:csslib/visitor.dart' show StyleSheet, treeToDebugString;
 import 'package:html5lib/dom.dart';
 import 'package:html5lib/parser.dart';
-import 'package:observe/transform.dart' show transformObservables;
 import 'package:source_maps/span.dart' show Span;
 import 'package:source_maps/refactor.dart' show TextEditTransaction;
 import 'package:source_maps/printer.dart';
 
 import 'analyzer.dart';
 import 'css_analyzer.dart' show analyzeCss, findUrlsImported,
        findImportsInStyleSheet, parseCss;
 import 'css_emitters.dart' show rewriteCssUris,
        emitComponentStyleSheet, emitOriginalCss, emitStyleSheet;
 import 'dart_parser.dart';
-import 'emitters.dart';
 import 'file_system.dart';
 import 'files.dart';
 import 'info.dart';
 import 'messages.dart';
 import 'compiler_options.dart';
-import 'paths.dart';
 import 'utils.dart';
 
 /**
  * Parses an HTML file [contents] and returns a DOM-like tree.
  * Note that [contents] will be a [String] if coming from a browser-based
  * [FileSystem], or it will be a [List<int>] if running on the command line.
  *
  * Adds emitted error/warning to [messages], if [messages] is supplied.
  */
 Document parseHtml(contents, String sourcePath, Messages messages) {
   var parser = new HtmlParser(contents, generateSpans: true,
       sourceUrl: sourcePath);
   var document = parser.parse();
 
   // Note: errors aren't fatal in HTML (unless strict mode is on).
   // So just print them as warnings.
   for (var e in parser.errors) {
     messages.warning(e.message, e.span);
   }
   return document;
 }
 
 /** Compiles an application written with Dart web components. */
 class Compiler {
   final FileSystem fileSystem;
   final CompilerOptions options;
   final List<SourceFile> files = <SourceFile>[];
-  final List<OutputFile> output = <OutputFile>[];
 
   String _mainPath;
   String _resetCssFile;
   StyleSheet _cssResetStyleSheet;
-  PathMapper _pathMapper;
   Messages _messages;
 
   FutureGroup _tasks;
   Set _processed;
 
   /** Information about source [files] given their href. */
   final Map<String, FileInfo> info = new SplayTreeMap<String, FileInfo>();
   final _edits = new Map<DartCodeInfo, TextEditTransaction>();
 
   final GlobalInfo global = new GlobalInfo();
 
   /** Creates a compiler with [options] using [fileSystem]. */
   Compiler(this.fileSystem, this.options, this._messages) {
     _mainPath = options.inputFile;
     var mainDir = path.dirname(_mainPath);
     var baseDir = options.baseDir != null ? options.baseDir : mainDir;
-    var outputDir = options.outputDir != null ? options.outputDir : mainDir;
-    var packageRoot = options.packageRoot != null ? options.packageRoot

[Jennifer Messerly, 2013/08/28 22:25:45]

we might want pkg root back now?

[Siggi Cherem (dart-lang), 2013/08/28 23:17:06]

Done.

-        : path.join(path.dirname(_mainPath), 'packages');
 
     if (options.resetCssFile != null) {
       _resetCssFile = options.resetCssFile;
       if (path.isRelative(_resetCssFile)) {
         // If CSS reset file path is relative from our current path.
         _resetCssFile = path.resolve(_resetCssFile);
       }
     }
 
     // Normalize paths - all should be relative or absolute paths.
-    if (path.isAbsolute(_mainPath) || path.isAbsolute(baseDir) ||
-        path.isAbsolute(outputDir) || path.isAbsolute(packageRoot)) {
+    if (path.isAbsolute(_mainPath) || path.isAbsolute(baseDir)) {
       if (path.isRelative(_mainPath)) _mainPath = path.resolve(_mainPath);
       if (path.isRelative(baseDir)) baseDir = path.resolve(baseDir);
-      if (path.isRelative(outputDir)) outputDir = path.resolve(outputDir);
-      if (path.isRelative(packageRoot)) {
-        packageRoot = path.resolve(packageRoot);
-      }
     }
-    _pathMapper = new PathMapper(
-        baseDir, outputDir, packageRoot, options.forceMangle,
-        options.rewriteUrls);
   }
 
   /** Compile the application starting from the given input file. */
   Future run() {
     if (path.basename(_mainPath).endsWith('.dart')) {
       _messages.error("Please provide an HTML file as your entry point.",
           null);
       return new Future.value(null);
     }
     return _parseAndDiscover(_mainPath).then((_) {
       _analyze();
 
       // Analyze all CSS files.
       _time('Analyzed Style Sheets', '', () =>
-          analyzeCss(_pathMapper.packageRoot, files, info,
+          analyzeCss(files, info,
               global.pseudoElements, _messages,
               warningsAsErrors: options.warningsAsErrors));
-
-      // TODO(jmesserly): need to go through our errors, and figure out if some
-      // of them should be warnings instead.
-      if (_messages.hasErrors || options.analysisOnly) return;
-      _transformDart();
-      _emit();
     });
   }
 
   /**
    * Asynchronously parse [inputFile] and transitively discover web components
    * to load and parse. Returns a future that completes when all files are
    * processed.
    */
   Future _parseAndDiscover(String inputFile) {
     _tasks = new FutureGroup();
     _processed = new Set();
     _processed.add(inputFile);
     _tasks.add(_parseHtmlFile(new UrlInfo(inputFile, inputFile, null)));
     return _tasks.future;
   }
 
   void _processHtmlFile(UrlInfo inputUrl, SourceFile file) {
     if (file == null) return;
 
     bool isEntryPoint = _processed.length == 1;
 
     files.add(file);
 
     var fileInfo = _time('Analyzed definitions', inputUrl.url, () {
       return analyzeDefinitions(global, inputUrl, file.document,
-        _pathMapper.packageRoot, _messages, isEntryPoint: isEntryPoint);
+        _messages, isEntryPoint: isEntryPoint);
     });
     info[inputUrl.resolvedPath] = fileInfo;
 
     if (isEntryPoint && _resetCssFile != null) {
       _processed.add(_resetCssFile);
       _tasks.add(_parseCssFile(new UrlInfo(_resetCssFile, _resetCssFile,
           null)));
     }
 
-    _setOutputFilenames(fileInfo);
     _processImports(fileInfo);
 
     // Load component files referenced by [file].
     for (var link in fileInfo.componentLinks) {
       _loadFile(link, _parseHtmlFile);
     }
 
     // Load stylesheet files referenced by [file].
     for (var link in fileInfo.styleSheetHrefs) {
       _loadFile(link, _parseCssFile);
     }
 
     // Load .dart files being referenced in the page.
     _loadFile(fileInfo.externalFile, _parseDartFile);
 
     // Process any @imports inside of a <style> tag.
     var urlInfos = findUrlsImported(fileInfo, fileInfo.inputUrl,
-        _pathMapper.packageRoot, file.document, _messages, options);
+        file.document, _messages, options);
     for (var urlInfo in urlInfos) {
       _loadFile(urlInfo, _parseCssFile);
     }
 
     // Load .dart files being referenced in components.
     for (var component in fileInfo.declaredComponents) {
       if (component.externalFile != null) {
         _loadFile(component.externalFile, _parseDartFile);
       } else if (component.userCode != null) {
         _processImports(component);
       }
 
       // Process any @imports inside of the <style> tag in a component.
       var urlInfos = findUrlsImported(component,
-          component.declaringFile.inputUrl, _pathMapper.packageRoot,
-          component.element, _messages, options);
+          component.declaringFile.inputUrl, component.element, _messages,
+          options);
       for (var urlInfo in urlInfos) {
         _loadFile(urlInfo, _parseCssFile);
       }
     }
   }
 
   /**
    * Helper function to load [urlInfo] and parse it using [loadAndParse] if it
    * hasn't been loaded before.
    */
   void _loadFile(UrlInfo urlInfo, Future loadAndParse(UrlInfo inputUrl)) {
     if (urlInfo == null) return;
     var resolvedPath = urlInfo.resolvedPath;
     if (!_processed.contains(resolvedPath)) {
       _processed.add(resolvedPath);
       _tasks.add(loadAndParse(urlInfo));
     }
   }
 
-  void _setOutputFilenames(FileInfo fileInfo) {
-    var filePath = fileInfo.dartCodeUrl.resolvedPath;
-    fileInfo.outputFilename = _pathMapper.mangle(path.basename(filePath),
-        '.dart', path.extension(filePath) == '.html');
-    for (var component in fileInfo.declaredComponents) {
-      var externalFile = component.externalFile;
-      var name = null;
-      if (externalFile != null) {
-        name = _pathMapper.mangle(
-            path.basename(externalFile.resolvedPath), '.dart');
-      } else {
-        var declaringFile = component.declaringFile;
-        var prefix = path.basename(declaringFile.inputUrl.resolvedPath);
-        if (declaringFile.declaredComponents.length == 1
-            && !declaringFile.codeAttached && !declaringFile.isEntryPoint) {
-          name = _pathMapper.mangle(prefix, '.dart', true);
-        } else {
-          var componentName = component.tagName.replaceAll('-', '_');
-          name = _pathMapper.mangle('${prefix}_$componentName', '.dart', true);
-        }
-      }
-      component.outputFilename = name;
-    }
-  }
-
   /** Parse an HTML file. */
   Future _parseHtmlFile(UrlInfo inputUrl) {
-    if (!_pathMapper.checkInputPath(inputUrl, _messages)) {
-      return new Future<SourceFile>.value(null);
-    }
     var filePath = inputUrl.resolvedPath;
     return fileSystem.readTextOrBytes(filePath)
         .catchError((e) => _readError(e, inputUrl))
         .then((source) {
           if (source == null) return;
           var file = new SourceFile(filePath);
           file.document = _time('Parsed', filePath,
               () => parseHtml(source, filePath, _messages));
           _processHtmlFile(inputUrl, file);
         });
   }
 
   /** Parse a Dart file. */
   Future _parseDartFile(UrlInfo inputUrl) {
-    if (!_pathMapper.checkInputPath(inputUrl, _messages)) {
-      return new Future<SourceFile>.value(null);
-    }
     var filePath = inputUrl.resolvedPath;
     return fileSystem.readText(filePath)
         .catchError((e) => _readError(e, inputUrl))
         .then((code) {
           if (code == null) return;
           var file = new SourceFile(filePath, type: SourceFile.DART);
           file.code = code;
           _processDartFile(inputUrl, file);
         });
   }
 
   /** Parse a stylesheet file. */
   Future _parseCssFile(UrlInfo inputUrl) {
-    if (!options.emulateScopedCss ||
-        !_pathMapper.checkInputPath(inputUrl, _messages)) {
+    if (!options.emulateScopedCss) {
       return new Future<SourceFile>.value(null);
     }
     var filePath = inputUrl.resolvedPath;
     return fileSystem.readText(filePath)
         .catchError((e) => _readError(e, inputUrl, isWarning: true))
         .then((code) {
           if (code == null) return;
           var file = new SourceFile(filePath, type: SourceFile.STYLESHEET);
           file.code = code;
           _processCssFile(inputUrl, file);
@@ skipping 16 matching lines @@
 
   void _processDartFile(UrlInfo inputUrl, SourceFile dartFile) {
     if (dartFile == null) return;
 
     files.add(dartFile);
 
     var resolvedPath = inputUrl.resolvedPath;
     var fileInfo = new FileInfo(inputUrl);
     info[resolvedPath] = fileInfo;
     fileInfo.inlinedCode = parseDartCode(resolvedPath, dartFile.code);
-    fileInfo.outputFilename =
-        _pathMapper.mangle(path.basename(resolvedPath), '.dart', false);
-
     _processImports(fileInfo);
   }
 
   void _processImports(LibraryInfo library) {
     if (library.userCode == null) return;
 
     for (var directive in library.userCode.directives) {
       _loadFile(_getDirectiveUrlInfo(library, directive), _parseDartFile);
     }
   }
@@ skipping 12 matching lines @@
     } else if (styleSheet != null) {
       _resolveStyleSheetImports(inputUrl, cssFile.path, styleSheet);
       fileInfo.styleSheets.add(styleSheet);
     }
   }
 
   /** Load and parse all style sheets referenced with an @imports. */
   void _resolveStyleSheetImports(UrlInfo inputUrl, String processingFile,
       StyleSheet styleSheet) {
     var urlInfos = _time('CSS imports', processingFile, () =>
-        findImportsInStyleSheet(styleSheet, _pathMapper.packageRoot, inputUrl,
-            _messages));
+        findImportsInStyleSheet(styleSheet, inputUrl, _messages));
 
     for (var urlInfo in urlInfos) {
       if (urlInfo == null) break;
       // Load any @imported stylesheet files referenced in this style sheet.
       _loadFile(urlInfo, _parseCssFile);
     }
   }
 
   String _directiveUri(Directive directive) {
     var uriDirective = (directive as UriBasedDirective).uri;
     return (uriDirective as dynamic).value;
   }
 
   UrlInfo _getDirectiveUrlInfo(LibraryInfo library, Directive directive) {
     var uri = _directiveUri(directive);
     if (uri.startsWith('dart:')) return null;
     if (uri.startsWith('package:') && uri.startsWith('package:polymer/')) {
       // Don't process our own package -- we'll implement @observable manually.
       return null;
     }
 
     var span = library.userCode.sourceFile.span(
         directive.offset, directive.end);
-    return UrlInfo.resolve(uri, library.dartCodeUrl, span,
-        _pathMapper.packageRoot, _messages);
+    return UrlInfo.resolve(uri, library.dartCodeUrl, span, _messages);
   }
 
   /**
-   * Transform Dart source code.
-   * Currently, the only transformation is [transformObservables].
-   * Calls _emitModifiedDartFiles to write the transformed files.
-   */
-  void _transformDart() {
-    var libraries = _findAllDartLibraries();
-
-    var transformed = [];
-    for (var lib in libraries) {
-      var userCode = lib.userCode;
-      var transaction = transformObservables(userCode.compilationUnit,
-          userCode.sourceFile, userCode.code, _messages);
-      if (transaction != null) {
-        _edits[lib.userCode] = transaction;
-        if (transaction.hasEdits) {
-          transformed.add(lib);
-        } else if (lib.htmlFile != null) {
-          // All web components will be transformed too. Track that.
-          transformed.add(lib);
-        }
-      }
-    }
-
-    _findModifiedDartFiles(libraries, transformed);
-
-    libraries.forEach(_fixImports);
-
-    _emitModifiedDartFiles(libraries);
-  }
-
-  /**
    * Finds all Dart code libraries.
    * Each library will have [LibraryInfo.inlinedCode] that is non-null.
    * Also each inlinedCode will be unique.
    */
   List<LibraryInfo> _findAllDartLibraries() {
     var libs = <LibraryInfo>[];
     void _addLibrary(LibraryInfo lib) {
       if (lib.inlinedCode != null) libs.add(lib);
     }
 
@@ skipping 15 matching lines @@
         throw new StateError('internal error: '
             'duplicate user code for ${lib.dartCodeUrl.resolvedPath}.'
             ' Files were: $files');
       }
       seen.add(lib.inlinedCode);
     }
     return true;
   }
 
   /**
-   * Queue modified Dart files to be written.
-   * This will not write files that are handled by [WebComponentEmitter] and
-   * [EntryPointEmitter].
-   */
-  void _emitModifiedDartFiles(List<LibraryInfo> libraries) {
-    for (var lib in libraries) {
-      // Components will get emitted by WebComponentEmitter, and the
-      // entry point will get emitted by MainPageEmitter.
-      // So we only need to worry about other .dart files.
-      if (lib.modified && lib is FileInfo &&
-          lib.htmlFile == null && !lib.isEntryPoint) {
-        var transaction = _edits[lib.userCode];
-
-        // Save imports that were modified by _fixImports.
-        for (var d in lib.userCode.directives) {
-          transaction.edit(d.offset, d.end, d.toString());
-        }
-
-        if (!lib.userCode.isPart) {
-          var pos = lib.userCode.firstPartOffset;
-          // Note: we use a different prefix than "autogenerated" to make
-          // ChangeRecord unambiguous. Otherwise it would be imported by this
-          // and polymer, resulting in a collision.
-          // TODO(jmesserly): only generate this for libraries that need it.
-          transaction.edit(pos, pos, "\nimport "
-              "'package:observe/observe.dart' as __observe;\n");
-        }
-        _emitFileAndSourceMaps(lib, transaction.commit(), lib.dartCodeUrl);
-      }
-    }
-  }
-
-  /**
    * This method computes which Dart files have been modified, starting
    * from [transformed] and marking recursively through all files that import
    * the modified files.
    */
   void _findModifiedDartFiles(List<LibraryInfo> libraries,
       List<FileInfo> transformed) {
 
     if (transformed.length == 0) return;
 
     // Compute files that reference each file, then use this information to
@@ skipping 18 matching lines @@
       library.referencedBy.forEach(setModified);
     }
     transformed.forEach(setModified);
 
     for (var lib in libraries) {
       // We don't need this anymore, so free it.
       lib.referencedBy = null;
     }
   }
 
-  void _fixImports(LibraryInfo library) {
-    // Fix imports. Modified files must use the generated path, otherwise
-    // we need to make the path relative to the input.
-    for (var directive in library.userCode.directives) {
-      var importPath = _getDirectiveUrlInfo(library, directive);
-      if (importPath == null) continue;
-      var importInfo = info[importPath.resolvedPath];
-      if (importInfo == null) continue;
-
-      String newUri = null;
-      if (importInfo.modified) {
-        // Use the generated URI for this file.
-        newUri = _pathMapper.importUrlFor(library, importInfo);
-      } else if (options.rewriteUrls) {
-        // Get the relative path to the input file.
-        newUri = _pathMapper.transformUrl(
-            library.dartCodeUrl.resolvedPath, directive.uri.value);
-      }
-      if (newUri != null) {
-        directive.uri = createStringLiteral(newUri);
-      }
-    }
-  }
-
   /** Run the analyzer on every input html file. */
   void _analyze() {
     var uniqueIds = new IntIterator();
     for (var file in files) {
       if (file.isHtml) {
         _time('Analyzed contents', file.path, () =>
             analyzeFile(file, info, uniqueIds, global, _messages,
               options.emulateScopedCss));
       }
     }
   }
 
-  /** Emit the generated code corresponding to each input file. */
-  void _emit() {
-    for (var file in files) {
-      if (file.isDart || file.isStyleSheet) continue;
-      _time('Codegen', file.path, () {
-        var fileInfo = info[file.path];
-        _emitComponents(fileInfo);
-      });
-    }
-
-    var entryPoint = files[0];
-    assert(info[entryPoint.path].isEntryPoint);
-    _emitMainDart(entryPoint);
-    _emitMainHtml(entryPoint);
-
-    assert(_unqiueOutputs());
-  }
-
-  bool _unqiueOutputs() {
-    var seen = new Set();
-    for (var file in output) {
-      if (seen.contains(file.path)) {
-        throw new StateError('internal error: '
-            'duplicate output file ${file.path}. Files were: $output');
-      }
-      seen.add(file.path);
-    }
-    return true;
-  }
-
-  /** Emit the main .dart file. */
-  void _emitMainDart(SourceFile file) {
-    var fileInfo = info[file.path];
-
-    var codeInfo = fileInfo.userCode;
-    if (codeInfo != null) {
-      var printer = new NestedPrinter(0);
-      if (codeInfo.libraryName == null) {
-        printer.addLine('library ${fileInfo.libraryName};');
-      }
-      printer.add(codeInfo.code);
-      _emitFileAndSourceMaps(fileInfo, printer, fileInfo.dartCodeUrl);
-    }
-  }
-
-  // TODO(jmesserly): refactor this out of Compiler.
-  /** Generate an html file with the (trimmed down) main html page. */
-  void _emitMainHtml(SourceFile file) {
-    var fileInfo = info[file.path];
-
-    var bootstrapName = '${path.basename(file.path)}_bootstrap.dart';
-    var bootstrapPath = path.join(path.dirname(file.path), bootstrapName);
-    var bootstrapOutPath = _pathMapper.outputPath(bootstrapPath, '');
-    var bootstrapOutName = path.basename(bootstrapOutPath);
-    var bootstrapInfo = new FileInfo(new UrlInfo('', bootstrapPath, null));
-    var printer = generateBootstrapCode(bootstrapInfo, fileInfo, global,
-        _pathMapper, options);
-    printer.build(bootstrapOutPath);
-    output.add(new OutputFile(
-          bootstrapOutPath, printer.text, source: file.path));
-
-    var document = file.document;
-    var hasCss = _emitAllCss();
-    transformMainHtml(document, fileInfo, _pathMapper, hasCss,
-        options.rewriteUrls, _messages, global, bootstrapOutName);
-    output.add(new OutputFile(_pathMapper.outputPath(file.path, '.html'),
-        document.outerHtml, source: file.path));
-  }
-
   // TODO(jmesserly): refactor this and other CSS related transforms out of
   // Compiler.
   /**
    * Generate an CSS file for all style sheets (main and components).
    * Returns true if a file was generated, otherwise false.
    */
   bool _emitAllCss() {

[Siggi Cherem (dart-lang), 2013/08/27 23:30:14]

On a future CL I plan to go deeper in removing some of this code. I just wanted
to be more careful with deleting the css emitting code that we haven't yet
ported over.

     if (!options.emulateScopedCss) return false;
 
     var buff = new StringBuffer();
 
     // Emit all linked style sheet files first.
     for (var file in files) {
       var css = new StringBuffer();
       var fileInfo = info[file.path];
       if (file.isStyleSheet) {
         for (var styleSheet in fileInfo.styleSheets) {
           // Translate any URIs in CSS.
           rewriteCssUris(_pathMapper, fileInfo.inputUrl.resolvedPath,
               options.rewriteUrls, styleSheet);
           css.write(
               '/* Auto-generated from style sheet href = ${file.path} */\n'
               '/* DO NOT EDIT. */\n\n');
           css.write(emitStyleSheet(styleSheet, fileInfo));
           css.write('\n\n');
         }
-
-        // Emit the linked style sheet in the output directory.
-        if (fileInfo.inputUrl.url != _resetCssFile) {
-          var outCss = _pathMapper.outputPath(fileInfo.inputUrl.resolvedPath,
-              '');
-          output.add(new OutputFile(outCss, css.toString()));
-        }
       }
     }
 
     // Emit all CSS for each component (style scoped).
     for (var file in files) {
       if (file.isHtml) {
         var fileInfo = info[file.path];
         for (var component in fileInfo.declaredComponents) {
           for (var styleSheet in component.styleSheets) {
             // Translate any URIs in CSS.
@@ skipping 38 matching lines @@
       }
     }
 
     if (buff.isEmpty) return false;
 
     var cssPath = _pathMapper.outputPath(_mainPath, '.css', true);
     output.add(new OutputFile(cssPath, buff.toString()));
     return true;
   }
 
-  /** Emits the Dart code for all components in [fileInfo]. */
-  void _emitComponents(FileInfo fileInfo) {
-    for (var component in fileInfo.declaredComponents) {
-      // TODO(terry): Handle more than one stylesheet per component
-      if (component.styleSheets.length > 1 && options.emulateScopedCss) {
-        var span = component.externalFile != null
-            ? component.externalFile.sourceSpan : null;
-        _messages.warning(
-            'Component has more than one stylesheet - first stylesheet used.',
-            span);
-      }
-      var printer = emitPolymerElement(
-          component, _pathMapper, _edits[component.userCode], options);
-      _emitFileAndSourceMaps(component, printer, component.externalFile);
-    }
-  }
-
-  /**
-   * Emits a file that was created using [NestedPrinter] and it's corresponding
-   * source map file.
-   */
-  void _emitFileAndSourceMaps(
-      LibraryInfo lib, NestedPrinter printer, UrlInfo dartCodeUrl) {
-    // Bail if we had an error generating the code for the file.
-    if (printer == null) return;
-
-    var libPath = _pathMapper.outputLibraryPath(lib);
-    var dir = path.dirname(libPath);
-    var filename = path.basename(libPath);
-    printer.add('\n//# sourceMappingURL=$filename.map');
-    printer.build(libPath);
-    var sourcePath = dartCodeUrl != null ? dartCodeUrl.resolvedPath : null;
-    output.add(new OutputFile(libPath, printer.text, source: sourcePath));
-    // Fix-up the paths in the source map file
-    var sourceMap = json.parse(printer.map);
-    var urls = sourceMap['sources'];
-    for (int i = 0; i < urls.length; i++) {
-      urls[i] = path.relative(urls[i], from: dir);
-    }
-    output.add(new OutputFile(path.join(dir, '$filename.map'),
-          json.stringify(sourceMap)));
-  }
-
   _time(String logMessage, String filePath, callback(),
       {bool printTime: false}) {
     var message = new StringBuffer();
     message.write(logMessage);
     var filename = path.basename(filePath);
     for (int i = (60 - logMessage.length - filename.length); i > 0 ; i--) {
       message.write(' ');
     }
     message.write(filename);
     return time(message.toString(), callback,
         printTime: options.verbose || printTime);
   }
 }