get-prototype-chain - npm Package Compare versions

Comparing version 1.0.0 to 1.0.1

get-prototype-chain.js

 module.exports = function getPrototypeChain(obj) {
-  var chain = [];
+  var chain = [obj];
+
   var prototype = obj;
   while (prototype = Object.getPrototypeOf(prototype)) {
     chain.push(prototype);
-  }
+  }  
   return chain;
 };

package.json

 {
   "name": "get-prototype-chain",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Returns an array of the object's prototype chain",
@@ -5,0 +5,0 @@ "main": "get-prototype-chain.js",

README.md

@@ -33,3 +33,3 @@ # get-prototype-chain [![Build Status](https://travis-ci.org/leahciMic/get-prototype-chain.svg?branch=master)](https://travis-ci.org/leahciMic/get-prototype-chain)
 
-// returns ['C', 'B', 'A', 'Object']
+// returns ['C', 'C', 'B', 'A', 'Object']
 ```

spec/get-prototype-chain-spec.js

@@ -6,17 +6,31 @@ 'use strict';
 describe('prototype-chain', () => {
-  class A {
+  describe('complex hierarchy', () => {
+    class A {
 
-  }
-  class B extends A {
+    }
+    class B extends A {
 
-  }
-  class C extends B {
+    }
+    class C extends B {
 
-  }
-  const Obj = new C();
+    }
 
-  it('should walk the prototype chain and return objects', () => {
-    const chain = prototypeChain(Obj).map(x => x.constructor.name);
-    expect(chain).toEqual(['C', 'B', 'A', 'Object']);
+    const Obj = new C();
+
+    it('should walk the prototype chain and return objects', () => {
+      const chain = prototypeChain(Obj).map(x => x.constructor.name);
+      // we expect to see C twice, one for the instance, and one for it's
+      // prototype
+      expect(chain).toEqual(['C', 'C', 'B', 'A', 'Object']);
+    });
   });
+
+  describe('simple object', () => {
+    const Obj = {};
+    it('should walk the prototype chain and return objects', () => {
+      const chain = prototypeChain(Obj).map(x => x.constructor.name);
+      expect(chain).toEqual(['Object', 'Object']);
+    });
+
+  });
 });

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Improved metrics

Total package byte prevSize

2481

increased by21.56%

Lines of code

43

increased by34.38%

No dependency changes