Clean e2e tests

e2e/lib/SettingRepository.ts

@@ -0,0 +1,18 @@
+import { JSONTextSettings, SettingSource } from '../../src/shared/SettingData';
+import Settings from '../../src/shared/settings/Settings';
+
+export default class SettingRepository {
+  constructor(
+    private readonly browser: any,
+  ) {
+  }
+
+  async saveJSON(settings: Settings): Promise<void> {
+    await this.browser.storage.local.set({
+      settings: {
+        source: SettingSource.JSON,
+        json:  JSONTextSettings.fromSettings(settings).toJSONText(),
+      }
+    });
+  }
+}