fixes #52, fields shadowing getters/setters or other fields

lib/runtime/dart/_native_typed_data.js

Index: lib/runtime/dart/_native_typed_data.js
diff --git a/lib/runtime/dart/_native_typed_data.js b/lib/runtime/dart/_native_typed_data.js
index 4c9290b64c65b270c06640e4ccf0274e0203fb17..923f5147236d6233d8c2f8f904ed0f23c0fe760a 100644
--- a/lib/runtime/dart/_native_typed_data.js
+++ b/lib/runtime/dart/_native_typed_data.js
@@ -4,7 +4,7 @@ var _native_typed_data;
   let _externalStorage = Symbol('_externalStorage');
   class NativeByteBuffer extends core.Object {
     NativeByteBuffer() {
-      this.lengthInBytes = null;
+      dart.initField(NativeByteBuffer, this, 'lengthInBytes', null);
     }
     get runtimeType() {
       return typed_data.ByteBuffer;
@@ -397,10 +397,10 @@ var _native_typed_data;
   dart.defineNamedConstructor(NativeFloat64x2List, 'fromList');
   class NativeTypedData extends core.Object {
     NativeTypedData() {
-      this.buffer = null;
-      this.lengthInBytes = null;
-      this.offsetInBytes = null;
-      this.elementSizeInBytes = null;
+      dart.initField(NativeTypedData, this, 'buffer', null);
+      dart.initField(NativeTypedData, this, 'lengthInBytes', null);
+      dart.initField(NativeTypedData, this, 'offsetInBytes', null);
+      dart.initField(NativeTypedData, this, 'elementSizeInBytes', null);
     }
     [_invalidIndex](index, length) {
       if (dart.notNull(index) < 0 || dart.notNull(index) >= dart.notNull(length)) {
@@ -431,6 +431,7 @@ var _native_typed_data;
     }
   }
   NativeTypedData[dart.implements] = () => [typed_data.TypedData];
+  dart.virtualField(NativeTypedData, 'elementSizeInBytes');
   // Function _checkLength: (dynamic) → int
   function _checkLength(length) {
     if (!(typeof length == 'number'))
@@ -990,10 +991,10 @@ var _native_typed_data;
       return NativeFloat32x4[_list][core.$get](0);
     }
     NativeFloat32x4(x, y, z, w) {
-      this.x = dart.as(NativeFloat32x4[_truncate](x), core.double);
-      this.y = dart.as(NativeFloat32x4[_truncate](y), core.double);
-      this.z = dart.as(NativeFloat32x4[_truncate](z), core.double);
-      this.w = dart.as(NativeFloat32x4[_truncate](w), core.double);
+      dart.initField(NativeFloat32x4, this, 'x', dart.as(NativeFloat32x4[_truncate](x), core.double));
+      dart.initField(NativeFloat32x4, this, 'y', dart.as(NativeFloat32x4[_truncate](y), core.double));
+      dart.initField(NativeFloat32x4, this, 'z', dart.as(NativeFloat32x4[_truncate](z), core.double));
+      dart.initField(NativeFloat32x4, this, 'w', dart.as(NativeFloat32x4[_truncate](w), core.double));
       if (!dart.is(x, core.num))
         throw new core.ArgumentError(x);
       if (!dart.is(y, core.num))
@@ -1020,16 +1021,16 @@ var _native_typed_data;
       this[_truncated](dart.as(NativeFloat32x4[_truncate](v.x), core.double), dart.as(NativeFloat32x4[_truncate](v.y), core.double), 0.0, 0.0);
     }
     [_doubles](x, y, z, w) {
-      this.x = dart.as(NativeFloat32x4[_truncate](x), core.double);
-      this.y = dart.as(NativeFloat32x4[_truncate](y), core.double);
-      this.z = dart.as(NativeFloat32x4[_truncate](z), core.double);
-      this.w = dart.as(NativeFloat32x4[_truncate](w), core.double);
+      dart.initField(NativeFloat32x4, this, 'x', dart.as(NativeFloat32x4[_truncate](x), core.double));
+      dart.initField(NativeFloat32x4, this, 'y', dart.as(NativeFloat32x4[_truncate](y), core.double));
+      dart.initField(NativeFloat32x4, this, 'z', dart.as(NativeFloat32x4[_truncate](z), core.double));
+      dart.initField(NativeFloat32x4, this, 'w', dart.as(NativeFloat32x4[_truncate](w), core.double));
     }
     [_truncated](x, y, z, w) {
-      this.x = x;
-      this.y = y;
-      this.z = z;
-      this.w = w;
+      dart.initField(NativeFloat32x4, this, 'x', x);
+      dart.initField(NativeFloat32x4, this, 'y', y);
+      dart.initField(NativeFloat32x4, this, 'z', z);
+      dart.initField(NativeFloat32x4, this, 'w', w);
     }
     toString() {
       return `[${this.x}, ${this.y}, ${this.z}, ${this.w}]`;
@@ -1258,10 +1259,10 @@ var _native_typed_data;
       return NativeInt32x4[_list][core.$get](0);
     }
     NativeInt32x4(x, y, z, w) {
-      this.x = dart.as(NativeInt32x4[_truncate](x), core.int);
-      this.y = dart.as(NativeInt32x4[_truncate](y), core.int);
-      this.z = dart.as(NativeInt32x4[_truncate](z), core.int);
-      this.w = dart.as(NativeInt32x4[_truncate](w), core.int);
+      dart.initField(NativeInt32x4, this, 'x', dart.as(NativeInt32x4[_truncate](x), core.int));
+      dart.initField(NativeInt32x4, this, 'y', dart.as(NativeInt32x4[_truncate](y), core.int));
+      dart.initField(NativeInt32x4, this, 'z', dart.as(NativeInt32x4[_truncate](z), core.int));
+      dart.initField(NativeInt32x4, this, 'w', dart.as(NativeInt32x4[_truncate](w), core.int));
       if (x != this.x && !(typeof x == 'number'))
         throw new core.ArgumentError(x);
       if (y != this.y && !(typeof y == 'number'))
@@ -1272,10 +1273,10 @@ var _native_typed_data;
         throw new core.ArgumentError(w);
     }
     bool(x, y, z, w) {
-      this.x = x ? -1 : 0;
-      this.y = y ? -1 : 0;
-      this.z = z ? -1 : 0;
-      this.w = w ? -1 : 0;
+      dart.initField(NativeInt32x4, this, 'x', x ? -1 : 0);
+      dart.initField(NativeInt32x4, this, 'y', y ? -1 : 0);
+      dart.initField(NativeInt32x4, this, 'z', z ? -1 : 0);
+      dart.initField(NativeInt32x4, this, 'w', w ? -1 : 0);
     }
     fromFloat32x4Bits(f) {
       let floatList = NativeFloat32x4[_list];
@@ -1287,10 +1288,10 @@ var _native_typed_data;
       return new NativeInt32x4[_truncated](view[core.$get](0), view[core.$get](1), view[core.$get](2), view[core.$get](3));
     }
     [_truncated](x, y, z, w) {
-      this.x = x;
-      this.y = y;
-      this.z = z;
-      this.w = w;
+      dart.initField(NativeInt32x4, this, 'x', x);
+      dart.initField(NativeInt32x4, this, 'y', y);
+      dart.initField(NativeInt32x4, this, 'z', z);
+      dart.initField(NativeInt32x4, this, 'w', w);
     }
     toString() {
       return `[${this.x}, ${this.y}, ${this.z}, ${this.w}]`;
@@ -1438,8 +1439,8 @@ var _native_typed_data;
   let _uint32View = Symbol('_uint32View');
   class NativeFloat64x2 extends core.Object {
     NativeFloat64x2(x, y) {
-      this.x = x;
-      this.y = y;
+      dart.initField(NativeFloat64x2, this, 'x', x);
+      dart.initField(NativeFloat64x2, this, 'y', y);
       if (!dart.is(this.x, core.num))
         throw new core.ArgumentError(this.x);
       if (!dart.is(this.y, core.num))
@@ -1455,8 +1456,8 @@ var _native_typed_data;
       this.NativeFloat64x2(v.x, v.y);
     }
     [_doubles](x, y) {
-      this.x = x;
-      this.y = y;
+      dart.initField(NativeFloat64x2, this, 'x', x);
+      dart.initField(NativeFloat64x2, this, 'y', y);
     }
     toString() {
       return `[${this.x}, ${this.y}]`;