Convert all to named imports (#414)

packages/ui-keyring/src/observable/env.ts

@@ -0,0 +1,15 @@
+// Copyright 2017-2020 @polkadot/ui-keyring authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import { BehaviorSubject } from 'rxjs';
+
+const subject = new BehaviorSubject(false);
+
+export const env = {
+  isDevelopment: (): boolean =>
+    subject.getValue(),
+  set: (isDevelopment: boolean): void => {
+    subject.next(isDevelopment);
+  },
+  subject
+};