Add explicit StubLogger option for tests

Summary:
A bit ugly to have test-only code in prod logic,
but we don't need any of the logger logic in tests
and by pulling out the `StubLogger`, we can avoid
loading Electron during tests.

Reviewed By: jknoxville

Differential Revision: D17808479

fbshipit-source-id: d2295d7bbca2f09c3f23389ad9443648757d8d03

src/utils/StubLogger.tsx

@@ -0,0 +1,30 @@
+/**
+ * Copyright 2018-present Facebook.
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ * @format
+ */
+
+import {Logger, Args, TrackType} from '../fb-interfaces/Logger';
+import ScribeLogger from '../fb-stubs/ScribeLogger';
+import {Store} from '../reducers/index';
+
+export default class StubLogger implements Logger {
+  constructor(_store: Store, _args?: Args) {
+    this.scribeLogger = new ScribeLogger(this);
+  }
+
+  scribeLogger: ScribeLogger;
+
+  track(_type: TrackType, _event: string, _data?: any, _plugin?: string) {}
+
+  trackTimeSince(_mark: string, _eventName?: string) {}
+
+  info(_data: any, _category: string) {}
+
+  warn(_data: any, _category: string) {}
+
+  error(_data: any, _category: string) {}
+
+  debug(_data: any, _category: string) {}
+}