feat(parseobservablemarble): define interfaces for parseObservableMarble

Author: kwonoj

src/marbles/parseObservableMarble.ts

@@ -0,0 +1,21 @@
+import { TestMessage } from '../message/TestMessage';
+import { SubscriptionMarbleToken } from './SubscriptionMarbleToken';
+
+const parseObservableMarble = <T>(
+  marble: string,
+  _value?: { [key: string]: T },
+  _error?: any,
+  _materializeInnerObservables: boolean = false
+): Array<TestMessage<T>> => {
+  if (marble.indexOf(SubscriptionMarbleToken.UNSUBSCRIBE) !== -1) {
+    throw new Error(`Observable marble cannot have unsubscription marker ${SubscriptionMarbleToken.UNSUBSCRIBE}`);
+  }
+
+  const messages = Array.from(marble).reduce((acc: Array<any>, _value: string) => {
+    return acc;
+  }, []);
+
+  return messages;
+};
+
+export { parseObservableMarble };