add util fn to check if string is valid prop name

npm/ng-packs/packages/schematics/src/utils/index.ts

@@ -10,6 +10,7 @@ export * from './import';
 export * from './model';
 export * from './namespace';
 export * from './path';
+export * from './prop';
 export * from './rule';
 export * from './service';
 export * from './source';

npm/ng-packs/packages/schematics/src/utils/prop.ts

@@ -0,0 +1,9 @@
+export const isValidProp = (name: string) => {
+  try {
+    new Function(name, 'var ' + name);
+  } catch (_) {
+    return false;
+  }
+
+  return true;
+};