fixes #40, extension methods for primitive types

lib/runtime/dart/math.js

 var math = dart.defineLibrary(math, {});
 var core = dart.import(core);
 var _js_helper = dart.lazyImport(_js_helper);
 (function(exports, core, _js_helper) {
   'use strict';
   class _JenkinsSmiHash extends core.Object {
     static combine(hash, value) {
       hash = 536870911 & dart.notNull(hash) + dart.notNull(value);
       hash = 536870911 & dart.notNull(hash) + ((524287 & dart.notNull(hash)) << 10);
       return dart.notNull(hash) ^ dart.notNull(hash) >> 6;
@@ skipping 128 matching lines @@
         let right = max(this.left['+'](this.width), other.left['+'](other.width));
         let bottom = max(this.top['+'](this.height), other.top['+'](other.height));
         let left = min(this.left, other.left);
         let top = min(this.top, other.top);
         return new (Rectangle$(T))(dart.as(left, T), dart.as(top, T), dart.as(dart.notNull(right) - dart.notNull(left), T), dart.as(dart.notNull(bottom) - dart.notNull(top), T));
       }
       containsRectangle(another) {
         return dart.notNull(this.left['<='](another.left)) && dart.notNull(this.left['+'](this.width)) >= dart.notNull(another.left) + dart.notNull(another.width) && dart.notNull(this.top['<='](another.top)) && dart.notNull(this.top['+'](this.height)) >= dart.notNull(another.top) + dart.notNull(another.height);
       }
       containsPoint(another) {
-        return another.x['>='](this.left) && dart.notNull(another.x) <= dart.notNull(this.left['+'](this.width)) && another.y['>='](this.top) && dart.notNull(another.y) <= dart.notNull(this.top['+'](this.height));
+        return another.x[dartx['>=']](this.left) && dart.notNull(another.x) <= dart.notNull(this.left['+'](this.width)) && another.y[dartx['>=']](this.top) && dart.notNull(another.y) <= dart.notNull(this.top['+'](this.height));
       }
       get topLeft() {
         return new (Point$(T))(this.left, this.top);
       }
       get topRight() {
         return new (Point$(T))(dart.as(this.left['+'](this.width), T), this.top);
       }
       get bottomRight() {
         return new (Point$(T))(dart.as(this.left['+'](this.width), T), dart.as(this.top['+'](this.height), T));
       }
@@ skipping 18 matching lines @@
     class Rectangle extends _RectangleBase$(T) {
       Rectangle(left, top, width, height) {
         this.left = left;
         this.top = top;
         this.width = dart.as(width['<'](0) ? dart.notNull(width['unary-']()) * 0 : width, T);
         this.height = dart.as(height['<'](0) ? dart.notNull(height['unary-']()) * 0 : height, T);
         super._RectangleBase();
       }
       static fromPoints(a, b) {
         let left = dart.as(min(a.x, b.x), T);
-        let width = dart.as(max(a.x, b.x)['-'](left), T);
+        let width = dart.as(max(a.x, b.x)[dartx['-']](left), T);
         let top = dart.as(min(a.y, b.y), T);
-        let height = dart.as(max(a.y, b.y)['-'](top), T);
+        let height = dart.as(max(a.y, b.y)[dartx['-']](top), T);
         return new (Rectangle$(T))(left, top, width, height);
       }
     }
     dart.setSignature(Rectangle, {
       constructors: () => ({
         Rectangle: [Rectangle$(T), [T, T, T, T]],
         fromPoints: [Rectangle$(T), [Point$(T), Point$(T)]]
       })
     });
     return Rectangle;
   });
   let Rectangle = Rectangle$();
   let _width = Symbol('_width');
   let _height = Symbol('_height');
   let MutableRectangle$ = dart.generic(function(T) {
     class MutableRectangle extends _RectangleBase$(T) {
       MutableRectangle(left, top, width, height) {
         this.left = left;
         this.top = top;
         this[_width] = dart.as(width['<'](0) ? _clampToZero(width) : width, T);
         this[_height] = dart.as(height['<'](0) ? _clampToZero(height) : height, T);
         super._RectangleBase();
       }
       static fromPoints(a, b) {
         let left = dart.as(min(a.x, b.x), T);
-        let width = dart.as(max(a.x, b.x)['-'](left), T);
+        let width = dart.as(max(a.x, b.x)[dartx['-']](left), T);
         let top = dart.as(min(a.y, b.y), T);
-        let height = dart.as(max(a.y, b.y)['-'](top), T);
+        let height = dart.as(max(a.y, b.y)[dartx['-']](top), T);
         return new (MutableRectangle$(T))(left, top, width, height);
       }
       get width() {
         return this[_width];
       }
       set width(width) {
         dart.as(width, T);
         if (width['<'](0))
           width = dart.as(_clampToZero(width), T);
         this[_width] = width;
@@ skipping 39 matching lines @@
     if (dart.notNull(a) > dart.notNull(b))
       return b;
     if (dart.notNull(a) < dart.notNull(b))
       return a;
     if (typeof b == 'number') {
       if (typeof a == 'number') {
         if (a == 0.0) {
           return (dart.notNull(a) + dart.notNull(b)) * dart.notNull(a) * dart.notNull(b);
         }
       }
-      if (a == 0 && dart.notNull(b.isNegative) || dart.notNull(b.isNaN))
+      if (a == 0 && dart.notNull(b[dartx.isNegative]) || dart.notNull(b[dartx.isNaN]))
         return b;
       return a;
     }
     return a;
   }
   dart.fn(min, core.num, [core.num, core.num]);
   function max(a, b) {
     if (!dart.is(a, core.num))
       throw new core.ArgumentError(a);
     if (!dart.is(b, core.num))
       throw new core.ArgumentError(b);
     if (dart.notNull(a) > dart.notNull(b))
       return a;
     if (dart.notNull(a) < dart.notNull(b))
       return b;
     if (typeof b == 'number') {
       if (typeof a == 'number') {
         if (a == 0.0) {
           return dart.notNull(a) + dart.notNull(b);
         }
       }
-      if (b.isNaN)
+      if (b[dartx.isNaN])
         return b;
       return a;
     }
-    if (b == 0 && dart.notNull(a.isNegative))
+    if (b == 0 && dart.notNull(a[dartx.isNegative]))
       return b;
     return a;
   }
   dart.fn(max, core.num, [core.num, core.num]);
   function atan2(a, b) {
     return Math.atan2(_js_helper.checkNum(a), _js_helper.checkNum(b));
   }
   dart.fn(atan2, core.double, [core.num, core.num]);
   function pow(x, exponent) {
     _js_helper.checkNum(x);
@@ skipping 141 matching lines @@
       }
       if ((dart.notNull(max) & dart.notNull(max) - 1) == 0) {
         this[_nextState]();
         return dart.notNull(this[_lo]) & dart.notNull(max) - 1;
       }
       let rnd32 = null;
       let result = null;
       do {
         this[_nextState]();
         rnd32 = this[_lo];
-        result = rnd32.remainder(max);
+        result = rnd32[dartx.remainder](max);
       } while (dart.notNull(rnd32) - dart.notNull(result) + dart.notNull(max) >= dart.notNull(_POW2_32));
       return result;
     }
     nextDouble() {
       this[_nextState]();
       let bits26 = dart.notNull(this[_lo]) & (1 << 26) - 1;
       this[_nextState]();
       let bits27 = dart.notNull(this[_lo]) & (1 << 27) - 1;
       return (dart.notNull(bits26) * dart.notNull(_Random._POW2_27_D) + dart.notNull(bits27)) / dart.notNull(_Random._POW2_53_D);
     }
@@ skipping 38 matching lines @@
   exports.sin = sin;
   exports.cos = cos;
   exports.tan = tan;
   exports.acos = acos;
   exports.asin = asin;
   exports.atan = atan;
   exports.sqrt = sqrt;
   exports.exp = exp;
   exports.log = log;
 })(math, core, _js_helper);