Convert all to named imports (#414)

packages/ui-keyring/src/stores/Browser.ts

@@ -5,7 +5,7 @@ import type { KeyringJson, KeyringStore } from '../types';
 
 import store from 'store';
 
-export default class BrowserStore implements KeyringStore {
+export class BrowserStore implements KeyringStore {
   public all (cb: (key: string, value: KeyringJson) => void): void {
     store.each((value: KeyringJson, key: string): void => {
       cb(key, value);

packages/ui-keyring/src/stores/File.ts

@@ -10,7 +10,7 @@ import path from 'path';
 import { assert } from '@polkadot/util';
 
 // NOTE untested and unused by any known apps, probably broken in various mysterious ways
-export default class FileStore implements KeyringStore {
+export class FileStore implements KeyringStore {
   #path: string;
 
   constructor (path: string) {

packages/ui-keyring/src/stores/index.ts

@@ -1,5 +1,5 @@
 // Copyright 2017-2020 @polkadot/ui-keyring authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-export { default as BrowserStore } from './Browser';
-export { default as FileStore } from './File';
+export { BrowserStore } from './Browser';
+export { FileStore } from './File';