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44import { AppServer, AppSession, ViewType } from '@mentra/sdk';
const PACKAGE_NAME = process.env.PACKAGE_NAME ?? (() => { throw new Error('PACKAGE_NAME is not set in .env file'); })();
const MENTRAOS_API_KEY = process.env.MENTRAOS_API_KEY ?? (() => { throw new Error('MENTRAOS_API_KEY is not set in .env file'); })();
const PORT = parseInt(process.env.PORT || '3000');
class ExampleMentraOSApp extends AppServer {
constructor() {
super({
packageName: PACKAGE_NAME,
apiKey: MENTRAOS_API_KEY,
port: PORT,
});
}
protected async onSession(session: AppSession, sessionId: string, userId: string): Promise<void> {
// Show welcome message
session.layouts.showTextWall("Example App is ready!");
// Handle real-time transcription
// requires microphone permission to be set in the developer console
session.events.onTranscription((data) => {
if (data.isFinal) {
session.layouts.showTextWall("You said: " + data.text, {
view: ViewType.MAIN,
durationMs: 3000
});
}
})
session.events.onGlassesBattery((data) => {
console.log('Glasses battery:', data);
})
}
}
// Start the server
// DEV CONSOLE URL: https://console.mentra.glass/
// Get your webhook URL from ngrok (or whatever public URL you have)
const app = new ExampleMentraOSApp();
app.start().catch(console.error);