Added few utils methods

lib/utils/JsonPointer.js

@@ -0,0 +1,18 @@
+'use strict';
+import JsonPointerLib from 'json-pointer';
+
+/**
+ * Wrapper for JsonPointer. Provides common operations
+ */
+export class JsonPointer extends JsonPointerLib {
+
+  /**
+   * returns last JsonPointer token
+   * @example
+   * // returns subpath
+   * new JsonPointerHelper.dirName('/path/0/subpath')
+   */
+   static dirName(pointer) {
+     return JsonPointer.parse(pointer).pop();
+   }
+}

lib/utils/pipes.js

@@ -0,0 +1,31 @@
+'use strict';
+
+import {Pipe} from 'angular2/angular2';
+import {JsonPointer} from './JsonPointer';
+
+@Pipe({
+  name: 'keys'
+})
+export class KeysPipe {
+  transform(obj) {
+    return Object.keys(obj);
+  }
+}
+
+@Pipe({
+  name: 'values'
+})
+export class ValuesPipe {
+  transform(obj) {
+    return Object.keys(obj).map(key => obj[key]);
+  }
+}
+
+@Pipe({
+  name: 'jsonPointerEscape'
+})
+export class JsonPointerEscapePipe {
+  transform(str) {
+    return JsonPointer.escape(str);
+  }
+}

lib/utils/swagger-defs.js

@@ -0,0 +1,3 @@
+'use strict';
+
+export var methods = new Set(['get', 'put', 'post', 'delete', 'options', 'head', 'patch']);