interface - npm Package Compare versions

Comparing version 1.1.1 to 1.2.0

index.js

@@ -12,3 +12,2 @@ function createInterface () {
     } else {
-      // assert that each of the functions are defined on the prototype
       var prototype = Object.getPrototypeOf(this)
@@ -31,2 +30,16 @@ var unimplemented = []
 
+  // expose valiate function
+  Interface.isImplementedBy = function (object) {
+    var prototype = Object.getPrototypeOf(object)
+
+    var length = functionNames.length
+    while (length--) {
+      if (typeof prototype[functionNames[length]] !== 'function') {
+        return false
+      }
+    }
+
+    return true
+  }
+
   return Interface
@@ -33,0 +46,0 @@ }

package.json

 {
   "name": "interface",
-  "version": "1.1.1",
+  "version": "1.2.0",
   "description": "Enforce an interface on classes",
@@ -10,3 +10,3 @@ "main": "index.js",
     "coveralls": "^2.11.16",
-    "eslint": "^3.15.0",
+    "eslint": "^4.3.0",
     "eslint-config-standard": "^6.2.1",
@@ -19,2 +19,3 @@ "eslint-plugin-promise": "^3.4.2",
   "scripts": {
+    "pretest": "npm run lint",
     "test": "nyc --reporter=lcov mocha",
@@ -21,0 +22,0 @@ "lint": "eslint .",

test/test.js

@@ -83,3 +83,2 @@ var expect = require('chai').expect
 
-
       function MySubSubClass () {
@@ -117,2 +116,22 @@ MyClass.call(this)
   })
+
+  describe('validate implementation without being a child of interface', function () {
+    var MyInterface = new Interface('methodA')
+
+    it('should return false for bad child', function () {
+      class BadChild {}
+
+      expect(MyInterface.isImplementedBy(new BadChild())).to.be.false
+    })
+
+    it('should return true for good child', function () {
+      class GoodChild extends MyInterface {
+        methodA () {
+          return true
+        }
+      }
+
+      expect(MyInterface.isImplementedBy(new GoodChild())).to.be.true
+    })
+  })
 })

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Improved metrics

Total package byte prevSize

8573

increased by10.93%

Number of package files

9

increased by12.5%

Lines of code

152

increased by19.69%

No dependency changes