Initial work of biometric unlock for browser

src/background/nativeMessaging.background.ts

@@ -0,0 +1,40 @@
+import { BrowserApi } from "../browser/browserApi";
+
+export class NativeMessagingBackground {
+    private connected = false;
+    private port: browser.runtime.Port | chrome.runtime.Port;
+
+    private resolver: any = null;
+
+    connect() {
+        this.port = BrowserApi.connectNative("com.8bit.bitwarden");
+
+        this.connected = true;
+        this.port.onMessage.addListener((msg: any) => {
+            if (this.resolver) {
+                this.resolver(msg);
+            } else {
+                console.error('NO RESOLVER');
+            }
+        });
+        this.port.onDisconnect.addListener(() => {
+            this.connected = false;
+            console.log('Disconnected');
+        });
+    }
+
+    send(message: object) {
+        // If not connected, try to connect
+        if (!this.connected) {
+            this.connect();
+        }
+
+        this.port.postMessage(message);
+    }
+
+    await(): Promise<any> {
+        return new Promise((resolve, reject) => {
+            this.resolver = resolve;
+        });
+    }
+}