anchor.diff:  
     "typed_data": const LibraryInfo(
         "typed_data/typed_data.dart",
  +      maturity: Maturity.STABLE,
         dart2jsPath: "typed_data/dart2js/typed_data_dart2js.dart"),
   
     "svg": const LibraryInfo(
  -        "svg/dartium/svg_dartium.dart",
  -        category: "Client",
  -        dart2jsPath: "svg/dart2js/svg_dart2js.dart"),
  +      "svg/dartium/svg_dartium.dart",
  +      category: "Client",
  +      maturity: Maturity.WEB_STABLE,
  +      dart2jsPath: "svg/dart2js/svg_dart2js.dart"),
   
     "utf": const LibraryInfo(
  -      "utf/utf.dart"),
  +      "utf/utf.dart",
  +      maturity: Maturity.DEPRECATED),
   
     "web_audio": const LibraryInfo(
  -        "web_audio/dartium/web_audio_dartium.dart",
  -        category: "Client",
  -        dart2jsPath: "web_audio/dart2js/web_audio_dart2js.dart"),
  +      "web_audio/dartium/web_audio_dartium.dart",
  +      category: "Client",
  +      maturity: Maturity.WEB_STABLE,
  +      dart2jsPath: "web_audio/dart2js/web_audio_dart2js.dart"),
   
     "web_gl": const LibraryInfo(
  -        "web_gl/dartium/web_gl_dartium.dart",
  -        category: "Client",
  -        dart2jsPath: "web_gl/dart2js/web_gl_dart2js.dart"),
  +      "web_gl/dartium/web_gl_dartium.dart",
  +      category: "Client",
  +      maturity: Maturity.WEB_STABLE,
  +      dart2jsPath: "web_gl/dart2js/web_gl_dart2js.dart"),
   
     "web_sql": const LibraryInfo(
  -        "web_sql/dartium/web_sql_dartium.dart",
  -        category: "Client",
  -        dart2jsPath: "web_sql/dart2js/web_sql_dart2js.dart"),
  +      "web_sql/dartium/web_sql_dartium.dart",
  +      category: "Client",
  +      maturity: Maturity.WEB_STABLE,
  +      dart2jsPath: "web_sql/dart2js/web_sql_dart2js.dart"),
   
     "_collection-dev": const LibraryInfo(
         "_collection_dev/collection_dev.dart",
  
positive.code:                     this.dart2jsPatchPath,
                      this.implementation: false,
                      this.documented: true,
                      this.platforms: DART2JS_PLATFORM | VM_PLATFORM});
  
    bool get isDart2jsLibrary => (platforms & DART2JS_PLATFORM) != 0;
    bool get isVmLibrary => (platforms & VM_PLATFORM) != 0;
  }
  
negative.code: 
    "async": const LibraryInfo(
        "async/async.dart",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/async_patch.dart"),
  
    "chrome": const LibraryInfo(
        "chrome/dart2js/chrome_dart2js.dart",
        maturity: Maturity.DEPRECATED,
        category: "Client"),
  
    "collection": const LibraryInfo(
        "collection/collection.dart",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/collection_patch.dart"),
  
    "convert": const LibraryInfo(
        "convert/convert.dart",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/convert_patch.dart"),
  
    "core": const LibraryInfo(
        "core/core.dart",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/core_patch.dart"),
  
    "html": const LibraryInfo(
        "html/dartium/html_dartium.dart",
        category: "Client",
        maturity: Maturity.WEB_STABLE,
        dart2jsPath: "html/dart2js/html_dart2js.dart"),
  
    "html_common": const LibraryInfo(
        "html/html_common/html_common.dart",
        category: "Client",
        maturity: Maturity.WEB_STABLE,
        dart2jsPath: "html/html_common/html_common_dart2js.dart",
        documented: false,
        implementation: true),
  