Inference through conditional expressions

lib/runtime/dart/_interceptors.js

 var _interceptors;
 (function(exports) {
   'use strict';
   let JSArray = Array;
   let JSMutableArray$ = dart.generic(function(E) {
     class JSMutableArray extends JSArray$(E) {
       JSMutableArray() {
         super.JSArray();
       }
     }
@@ skipping 274 matching lines @@
       return (this / other).toInt();
     }
     ['<<'](other) {
       if (!dart.is(other, core.num))
         throw new core.ArgumentError(other);
       if (other < 0)
         throw new core.ArgumentError(other);
       return this[_shlPositive](other);
     }
     [_shlPositive](other) {
-      return dart.as(other > 31 ? 0 : this << other >>> 0, core.num);
+      return other > 31 ? 0 : dart.as(this << other >>> 0, core.num);
     }
     ['>>'](other) {
       if (false)
         this[_shrReceiverPositive](other);
       if (!dart.is(other, core.num))
         throw new core.ArgumentError(other);
       if (other < 0)
         throw new core.ArgumentError(other);
       return this[_shrOtherPositive](other);
     }
     [_shrOtherPositive](other) {
-      return dart.as(this > 0 ? this[_shrBothPositive](other) : this >> (dart.notNull(other) > 31 ? 31 : other) >>> 0, core.num);
+      return this > 0 ? this[_shrBothPositive](other) : dart.as(this >> (dart.notNull(other) > 31 ? 31 : other) >>> 0, core.num);
     }
     [_shrReceiverPositive](other) {
       if (other < 0)
         throw new core.ArgumentError(other);
       return this[_shrBothPositive](other);
     }
     [_shrBothPositive](other) {
-      return dart.as(other > 31 ? 0 : this >>> other, core.num);
+      return other > 31 ? 0 : dart.as(this >>> other, core.num);
     }
     ['&'](other) {
       if (!dart.is(other, core.num))
         throw new core.ArgumentError(other);
       return dart.as((this & other) >>> 0, core.num);
     }
     ['|'](other) {
       if (!dart.is(other, core.num))
         throw new core.ArgumentError(other);
       return dart.as((this | other) >>> 0, core.num);
@@ skipping 754 matching lines @@
   exports.findInterceptorForType = findInterceptorForType;
   exports.JSBool = JSBool;
   exports.JSNull = JSNull;
   exports.JSIndexable = JSIndexable;
   exports.JSMutableIndexable = JSMutableIndexable;
   exports.JSObject = JSObject;
   exports.JavaScriptObject = JavaScriptObject;
   exports.PlainJavaScriptObject = PlainJavaScriptObject;
   exports.UnknownJavaScriptObject = UnknownJavaScriptObject;
 })(_interceptors || (_interceptors = {}));