es6-shim - npm Package Compare versions

Comparing version 0.10.1 to 0.11.0

bower.json

 {
   "name": "es6-shim",
   "repo": "paulmillr/es6-shim",
-  "version": "0.10.1",
+  "version": "0.11.0",
   "description": "ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines",
@@ -6,0 +6,0 @@ "keywords": [

CHANGELOG.md

@@ -0,1 +1,12 @@
+# es6-shim x.x.x (not yet released)
+
+# es6-shim 0.11.0 (11 May 2014)
+* Remove `Object.getOwnPropertyDescriptors`, per spec. (#234, #235)
+* IE8 fixes. (#163, #236)
+* Improve `Promise` scheduling. (#231)
+* Add some more standalone shims
+* Use an Object.create fallback, for better ES3 compatibility
+* Fix Math.expm1 in more browsers (#84)
+* Fix es6-shim in Web Workers (#247, #248)
+
 # es6-shim 0.10.1 (13 Mar 2014)
@@ -2,0 +13,0 @@ * Update bower.json, component.json, and .npmignore (#229, #230, #233)

component.json

 {
   "name": "es6-shim",
   "repo": "paulmillr/es6-shim",
-  "version": "0.10.1",
+  "version": "0.11.0",
   "description": "ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines",
@@ -6,0 +6,0 @@ "keywords": [

es6-shim.js

@@ -1,2 +0,2 @@
-// ES6-shim 0.10.1 (c) 2013-2014 Paul Miller (http://paulmillr.com)
+// ES6-shim 0.11.0 (c) 2013-2014 Paul Miller (http://paulmillr.com)
 // ES6-shim may be freely distributed under the MIT license.
@@ -52,3 +52,3 @@ // For more details and documentation:
   var main = function() {
-    var globals = (typeof global === 'undefined') ? window : global;
+    var globals = (typeof global === 'undefined') ? self : global;
     var global_isFinite = globals.isFinite;
@@ -81,2 +81,13 @@ var supportsDescriptors = !!Object.defineProperty && arePropertyDescriptorsSupported();
 
+    // Simple shim for Object.create on ES3 browsers
+    // (unlike real shim, no attepmt to support `prototype===null`)
+    var create = Object.create || function(prototype, properties) {
+      function Type() {}
+      Type.prototype = prototype;
+      var object = new Type();
+      if (typeof properties !== "undefined")
+        defineProperties(object, properties);
+      return object;
+    };
+
     // This is a private name in the es6 spec, equal to '[Symbol.iterator]'
@@ -226,3 +237,3 @@ // we're going to use an arbitrary _-prefixed name to make our shims
           // OrdinaryCreateFromConstructor
-          obj = Object.create(C.prototype || null);
+          obj = create(C.prototype || null);
         }
@@ -702,3 +713,5 @@ // Mark that we've used the es6 construct path
     // any way to identify its iterator.  So add our own shimmed field.
-    addIterator(Object.getPrototypeOf([].values()));
+    if (Object.getPrototypeOf) {
+      addIterator(Object.getPrototypeOf([].values()));
+    }
 
@@ -746,10 +759,2 @@ var maxSafeInteger = Math.pow(2, 53) - 1;
       defineProperties(Object, {
-        getOwnPropertyDescriptors: function(subject) {
-          var descs = {};
-          Object.getOwnPropertyNames(subject).forEach(function(propName) {
-            descs[propName] = Object.getOwnPropertyDescriptor(subject, propName);
-          });
-          return descs;
-        },
-
         getPropertyDescriptor: function(subject, name) {
@@ -784,6 +789,14 @@ var pd = Object.getOwnPropertyDescriptor(subject, name);
         assign: function(target, source) {
-          return Object.keys(source).reduce(function(target, key) {
-            target[key] = source[key];
-            return target;
-          }, target);
+          if (!ES.TypeIsObject(target)) {
+            throw new TypeError('target must be an object');
+          }
+          return Array.prototype.reduce.call(arguments, function(target, source) {
+            if (!ES.TypeIsObject(source)) {
+              throw new TypeError('source must be an object');
+            }
+            return Object.keys(source).reduce(function(target, key) {
+              target[key] = source[key];
+              return target;
+            }, target);
+          });
         }
@@ -949,11 +962,3 @@ });
         if (!global_isFinite(value) || value === 0) return value;
-        var result = 0;
-        var n = 50;
-        for (var i = 1; i < n; i++) {
-          for (var j = 2, factorial = 1; j <= i; j++) {
-            factorial *= j;
-          }
-          result += Math.pow(value, i) / factorial;
-        }
-        return result;
+        return Math.exp(value) - 1;
       },
@@ -1115,20 +1120,33 @@
       var setTimeout = globals.setTimeout;
-      var makeZeroTimeout = function() {
-        // from http://dbaron.org/log/20100309-faster-timeouts
-        var timeouts = [];
-        var messageName = "zero-timeout-message";
-        var setZeroTimeout = function(fn) {
-          timeouts.push(fn);
-          window.postMessage(messageName, "*");
+      var makeZeroTimeout;
+      if (typeof window !== 'undefined' && ES.IsCallable(window.postMessage)) {
+        makeZeroTimeout = function() {
+          // from http://dbaron.org/log/20100309-faster-timeouts
+          var timeouts = [];
+          var messageName = "zero-timeout-message";
+          var setZeroTimeout = function(fn) {
+            timeouts.push(fn);
+            window.postMessage(messageName, "*");
+          };
+          var handleMessage = function(event) {
+            if (event.source == window && event.data == messageName) {
+              event.stopPropagation();
+              if (timeouts.length === 0) { return; }
+              var fn = timeouts.shift();
+              fn();
+            }
+          };
+          window.addEventListener("message", handleMessage, true);
+          return setZeroTimeout;
         };
-        var handleMessage = function(event) {
-          if (event.source == window && event.data == messageName) {
-            event.stopPropagation();
-            if (timeouts.length === 0) { return; }
-            var fn = timeouts.shift();
-            fn();
-          }
+      }
+      var makePromiseAsap = function() {
+        // An efficient task-scheduler based on a pre-existing Promise
+        // implementation, which we can use even if we override the
+        // global Promise below (in order to workaround bugs)
+        // https://github.com/Raynos/observ-hash/issues/2#issuecomment-35857671
+        var P = globals.Promise;
+        return P && P.resolve && function(task) {
+          return P.resolve().then(task);
         };
-        window.addEventListener("message", handleMessage, true);
-        return setZeroTimeout;
       };
@@ -1138,4 +1156,5 @@ var enqueue = ES.IsCallable(globals.setImmediate) ?
         typeof process === 'object' && process.nextTick ? process.nextTick :
-        ES.IsCallable(window.postMessage) ? makeZeroTimeout() :
-        function(task) { setTimeout(task, 0); }; // fallback
+        makePromiseAsap() ||
+        (ES.IsCallable(makeZeroTimeout) ? makeZeroTimeout() :
+        function(task) { setTimeout(task, 0); }); // fallback
 
@@ -1251,3 +1270,3 @@ var triggerPromiseReactions = function(reactions, x) {
           var prototype = constructor.prototype || Promise$prototype;
-          obj = obj || Object.create(prototype);
+          obj = obj || create(prototype);
           defineProperties(obj, {
@@ -1524,3 +1543,3 @@ _status: undefined,
               var prototype = constructor.prototype || Map$prototype;
-              obj = obj || Object.create(prototype);
+              obj = obj || create(prototype);
               defineProperties(obj, { _es6map: true });
@@ -1703,3 +1722,3 @@ return obj;
               var prototype = constructor.prototype || Set$prototype;
-              obj = obj || Object.create(prototype);
+              obj = obj || create(prototype);
               defineProperties(obj, { _es6set: true });
@@ -1821,2 +1840,3 @@ return obj;
           new globals.Map().size !== 0 ||
+          typeof globals.Map.prototype.keys !== 'function' ||
           typeof globals.Set.prototype.keys !== 'function' ||
@@ -1823,0 +1843,0 @@ typeof globals.Map.prototype.forEach !== 'function' ||

package.json

 {
   "author": "Paul Miller (http://paulmillr.com)",
   "name": "es6-shim",
-  "version": "0.10.1",
+  "version": "0.11.0",
   "description": "ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines",
@@ -46,8 +46,8 @@ "keywords": [
   "devDependencies": {
-    "mocha": "~1.17.1",
-    "chai": "~1.9.0",
-    "es5-shim": "~2.3.0",
-    "jshint": "~2.4.3",
-    "promises-aplus-tests": "~2.0.3"
+    "mocha": "~1.18.2",
+    "chai": "~1.9.1",
+    "es5-shim": "~3.1.1",
+    "jshint": "~2.5.0",
+    "promises-aplus-tests": "~2.0.4"
   }
 }

README.md

@@ -49,4 +49,4 @@ # ES6 Shim
 * `Array`:
-    * `from()`
-    * `of()`
+    * `from()` ([a standalone shim is also available](https://npmjs.org/package/array.from))
+    * `of()` ([a standalone shim is also available](https://npmjs.org/package/array.of))
 * `Array.prototype`:
@@ -61,3 +61,2 @@ * `copyWithin()`
 * `Object`:
-    * `getOwnPropertyDescriptors()` (ES5)
     * `getPropertyDescriptor()` (ES5)
@@ -68,3 +67,3 @@ * `getPropertyNames()` (ES5)
     * `is()` ([a standalone shim is also available](https://github.com/ljharb/object-is))
-    * `assign()`
+    * `assign()` ([a standalone shim is also available](https://github.com/ljharb/object.assign))
     * `setPrototypeOf()` (IE >= 11)
@@ -71,0 +70,0 @@ * `Math`:

No alert changes

Improved metrics

Total package byte prevSize

77316

increased by2%

Lines of code

1737

increased by1.16%

Worsened metrics

Number of lines in readme file

220

decreased by-0.45%

No dependency changes