regenerator-runtime - npm Package Compare versions

Comparing version 0.10.0 to 0.10.1

package.json

@@ -5,3 +5,3 @@ {
   "description": "Runtime for Regenerator-compiled generator and async functions.",
-  "version": "0.10.0",
+  "version": "0.10.1",
   "main": "runtime-module.js",
@@ -8,0 +8,0 @@ "keywords": [

runtime.js

@@ -14,3 +14,4 @@ /**
 
-  var hasOwn = Object.prototype.hasOwnProperty;
+  var Op = Object.prototype;
+  var hasOwn = Op.hasOwnProperty;
   var undefined; // More compressible than void 0.
@@ -87,6 +88,25 @@ var $Symbol = typeof Symbol === "function" ? Symbol : {};
 
-  var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype;
+  // This is a polyfill for %IteratorPrototype% for environments that
+  // don't natively support it.
+  var IteratorPrototype = {};
+  IteratorPrototype[iteratorSymbol] = function () {
+    return this;
+  };
+
+  var getProto = Object.getPrototypeOf;
+  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
+  if (NativeIteratorPrototype &&
+      NativeIteratorPrototype !== Op &&
+      hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
+    // This environment has a native %IteratorPrototype%; use it instead
+    // of the polyfill.
+    IteratorPrototype = NativeIteratorPrototype;
+  }
+
+  var Gp = GeneratorFunctionPrototype.prototype =
+    Generator.prototype = Object.create(IteratorPrototype);
   GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
   GeneratorFunctionPrototype.constructor = GeneratorFunction;
-  GeneratorFunctionPrototype[toStringTagSymbol] = GeneratorFunction.displayName = "GeneratorFunction";
+  GeneratorFunctionPrototype[toStringTagSymbol] =
+    GeneratorFunction.displayName = "GeneratorFunction";
 
@@ -375,6 +395,2 @@ // Helper for defining the .next, .throw, and .return methods of the
 
-  Gp[iteratorSymbol] = function() {
-    return this;
-  };
-
   Gp[toStringTagSymbol] = "Generator";
@@ -381,0 +397,0 @@

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Fixed alerts

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Improved metrics

Total package byte prevSize

24833

increased by2.51%

Lines of code

615

increased by2.5%

No dependency changes