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:    * do so.
     */
    final bool implementation;
  
    const LibraryInfo(this.path, {
                      this.category: "Shared",
  
negative.code:   "indexed_db": const LibraryInfo(
        "indexed_db/dartium/indexed_db_dartium.dart",
        category: "Client",
        maturity: Maturity.WEB_STABLE,
        dart2jsPath: "indexed_db/dart2js/indexed_db_dart2js.dart"),
  
    "io": const LibraryInfo(
        "io/io.dart",
        category: "Server",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/io_patch.dart"),
  
    "isolate": const LibraryInfo(
        "isolate/isolate.dart",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/isolate_patch.dart"),
  
    "js": const LibraryInfo(
        "js/dartium/js_dartium.dart",
        category: "Client",
        maturity: Maturity.STABLE,
        dart2jsPath: "js/dart2js/js_dart2js.dart"),
  
    "json": const LibraryInfo(
        "json/json.dart",
        maturity: Maturity.DEPRECATED),
  
    "math": const LibraryInfo(
        "math/math.dart",
        maturity: Maturity.STABLE,
        dart2jsPatchPath: "_internal/lib/math_patch.dart"),
  
    "mirrors": const LibraryInfo(
        "mirrors/mirrors.dart",
        maturity: Maturity.UNSTABLE, 
        dart2jsPatchPath: "_internal/lib/mirrors_patch.dart"),
  
    "nativewrappers": const LibraryInfo(
  