Fix issue when there are no attached decorators

Author: mgechev

README.md

@@ -31,7 +31,7 @@ Below you can find a recommended configuration which is based on the [Angular 2
 - [x] Use `@Input` instead of `inputs` decorator property.
 - [x] Use `@Output` instead of `outputs` decorator property.
 - [x] Use `@HostListeners` and `@HostBindings` instead of `host` decorator property.
-- [ ] Do not inject `ElementRef`.
+- [ ] Do not use `nativeElement` injected with `ElementRef`.
 - [ ] Do not rename inputs.
 - [ ] Do not rename outputs.
 - [ ] Externalize template above *n* lines of code.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ng2lint",
-  "version": "0.0.4",
+  "version": "0.0.6",
   "description": "A set of linters for Angular 2 applications, following https://github.com/mgechev/angular2-style-guide.",
   "main": "index.js",
   "scripts": {

src/parameterDecoratorBase.ts

@@ -49,7 +49,7 @@ class DirectiveMetadataWalker extends Lint.RuleWalker {
   }
 
   visitClassDeclaration(node: ts.ClassDeclaration) {
-    node.decorators.forEach(this.validateDecorator.bind(this, node.name.text));
+    (node.decorators || []).forEach(this.validateDecorator.bind(this, node.name.text));
     super.visitClassDeclaration(node);
   }