anchor.diff:        maturity: Maturity.STABLE,
         dart2jsPatchPath: "_internal/compiler/js_lib/async_patch.dart"),
   
  -  "_blink": const LibraryInfo(
  -      "_blink/dartium/_blink_dartium.dart",
  -      category: "Client",
  -      implementation: true,
  -      documented: false),
  -
  -  "_chrome": const LibraryInfo(
  -      "_chrome/dart2js/chrome_dart2js.dart",
  -      documented: false,
  -      category: "Client"),
  -
     "collection": const LibraryInfo(
         "collection/collection.dart",
         maturity: Maturity.STABLE,
  
positive.code: 
    "_js_mirrors": const LibraryInfo(
        "_internal/compiler/js_lib/js_mirrors.dart",
        category: "Internal",
        documented: false,
        platforms: DART2JS_PLATFORM),
  
    "_js_names": const LibraryInfo(
        "_internal/compiler/js_lib/js_names.dart",
        category: "Internal",
        documented: false,
        platforms: DART2JS_PLATFORM),
  
negative.code:       maturity: Maturity.UNSTABLE,
        dart2jsPatchPath: "_internal/compiler/js_lib/mirrors_patch.dart"),
  
    "typed_data": const LibraryInfo(
        "typed_data/typed_data.dart",
        maturity: Maturity.STABLE,
  