Downward inference

lib/runtime/dart/core.js

 var core;
 (function(exports) {
   'use strict';
   class Object {
     constructor() {
       var name = this.constructor.name;
       var init = this[name];
       var result = void 0;
       if (init)
         result = init.apply(this, arguments);
@@ skipping 2162 matching lines @@
       if (fragment != null) {
         fragment = Uri[_makeFragment](fragment, 0, fragment.length);
       } else if (this.hasFragment) {
         fragment = this.fragment;
       }
       return new Uri[_internal$](scheme, userInfo, host, port, path, query, fragment);
     }
     get pathSegments() {
       if (this[_pathSegments] == null) {
         let pathToSplit = !dart.notNull(this.path.isEmpty) && this.path.codeUnitAt(0) == Uri[_SLASH] ? this.path.substring(1) : this.path;
-        this[_pathSegments] = dart.as(new collection.UnmodifiableListView(pathToSplit == "" ? /* Unimplemented const */new List$(String).from([]) : pathToSplit.split("/").map(Uri.decodeComponent).toList({growable: false})), List$(String));
+        this[_pathSegments] = new collection.UnmodifiableListView(pathToSplit == "" ? /* Unimplemented const */new List$(String).from([]) : pathToSplit.split("/").map(Uri.decodeComponent).toList({growable: false}));
       }
       return this[_pathSegments];
     }
     get queryParameters() {
       if (this[_queryParameters] == null) {
         this[_queryParameters] = dart.as(new collection.UnmodifiableMapView(Uri.splitQueryString(this.query)), Map$(String, String));
       }
       return this[_queryParameters];
     }
     static [_makePort](port, scheme) {
@@ skipping 895 matching lines @@
   exports.StackTrace = StackTrace;
   exports.Stopwatch = Stopwatch;
   exports.String = String;
   exports.RuneIterator = RuneIterator;
   exports.StringBuffer = StringBuffer;
   exports.StringSink = StringSink;
   exports.Symbol = Symbol;
   exports.Type = Type;
   exports.Uri = Uri;
 })(core || (core = {}));