es5-shim - npm Package Compare versions

Comparing version 1.2.6 to 1.2.7

es5-shim.js

@@ -59,3 +59,3 @@ // vim:set ts=4 sts=4 sw=4 st:
     var slice = Array.prototype.slice;
-    Function.prototype.bind = function bind(that) { // .length is 1
+    Function.prototype.bind = function bind() { // .length is 1
         // 1. Let Target be the this value.
@@ -70,3 +70,5 @@ var target = this;
         //   argument values provided after thisArg (arg1, arg2 etc), in order.
-        var args = slice.call(arguments);
+        // XXX slicedArgs will stand in for "A" if used
+        var args = slice.call(arguments); // for normal call
+        var slicedArgs; // memoize later if used as constructor
         // 4. Let F be a new native ECMAScript object.
@@ -101,3 +103,8 @@ // 9. Set the [[Prototype]] internal property of F to the standard
                 var self = Object.create(target.prototype);
-                return target.apply(self, args.concat(slice.call(arguments))) || self;
+                if (!slicedArgs) // memoize slice
+                    slicedArgs = args.slice(1);
+                return target.apply(
+                    self,
+                    slicedArgs.concat(slice.call(arguments))
+                 ) || self;
 
@@ -131,17 +138,6 @@ } else {
 
-        }
-        // XXX this will have no effect if length is not writable.
-        // It will throw an exception if this is strict mode.
-        try {
-            bound.length = (
-                // 14. If the [[Class]] internal property of Target is "Function", then
-                typeof target == "function" ?
-                // a. Let L be the length property of Target minus the length of A.
-                // b. Set the length own property of F to either 0 or L, whichever is larger.
-                Math.max(target.length - args.length, 0) :
-                // 15. Else set the length own property of F to 0.
-                0
-            );
-        } catch (exception) {
-        }
+        };
+
+        // XXX bound.length is never writable, so don't even try
+        //
         // 16. The length own property of F is given attributes as specified in
@@ -148,0 +144,0 @@ //   15.3.5.1.

es5-shim.min.js

@@ -1,16 +0,16 @@
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package.json

 {
     "name": "es5-shim",
-    "version": "1.2.6",
+    "version": "1.2.7",
     "description": "ES5 as implementable on previous engines",
@@ -5,0 +5,0 @@ "homepage": "http://github.com/kriskowal/es5-shim/",

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198257

increased by0.09%

Number of lines in readme file

155

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Lines of code

5013

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No dependency changes