feat: improve bridge and exported types

app/assets/javascripts/services/browserBridge.ts

@@ -0,0 +1,32 @@
+import { Bridge } from "./bridge";
+import { Environment } from 'snjs';
+
+const KEYCHAIN_STORAGE_KEY = 'keychain';
+
+export class BrowserBridge implements Bridge {
+  constructor(public appVersion: string) {}
+  environment = Environment.Web;
+
+  async getKeychainValue(): Promise<unknown> {
+    const value = localStorage.getItem(KEYCHAIN_STORAGE_KEY);
+    if (value) {
+      return JSON.parse(value);
+    }
+  }
+
+  async setKeychainValue(value: any): Promise<void> {
+    localStorage.setItem(KEYCHAIN_STORAGE_KEY, JSON.stringify(value));
+  }
+
+  async clearKeychainValue(): Promise<void> {
+    localStorage.removeItem(KEYCHAIN_STORAGE_KEY);
+  }
+
+  /** No-ops */
+
+  syncComponents() {}
+  onMajorDataChange() {}
+  onInitialDataLoad() {}
+  onSearch() {}
+  downloadBackup() {}
+}