fix: support nw.js environment

Closes  #524

'isNode' will now be false in nw.js environment so 'isBrowser' will be true and 'propertyDescriptorPatch' will be executed correctly

Author: adros

lib/common/utils.ts

@@ -45,7 +45,7 @@ export const isWebWorker: boolean =
     (typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope);
 
 export const isNode: boolean =
-    (typeof process !== 'undefined' && {}.toString.call(process) === '[object process]');
+    (!('nw' in _global) && typeof process !== 'undefined' && {}.toString.call(process) === '[object process]');
 
 export const isBrowser: boolean =
     !isNode && !isWebWorker && !!(typeof window !== 'undefined' && window['HTMLElement']);
@@ -429,4 +429,4 @@ export function patchMethod(
     proto[name] = createNamedFn(name, patchFn(delegate, delegateName, name));
   }
   return delegate;
-}
+}