TypeScript code quality and architecture showcase project

This is a cleaned up version of a proprietary project for resume showcase.

Because of this some of the functionality is redacted. This project is for code demonstration purposes only.

Project features

• Environment specific-configuration (config/config.yml)
• Environment variables (.env)
• Abstract entity inheritance (subscription entities)
• TypeORM usage (regular entities & timeseries data)
• Logging using winston
• Scheduled tasks & in-memory queue workers using fastq
• Caching with different cache drivers (file, redis, sqlite)
• Telegram bot using Grammy library
• HTTP server using Express library
• Websocket server using Socket.io library
• Authentication using Telegram auth

Application bootstrapping

index.js is the entrypoint where all the services are bootstrapped:

dotenv.config();

Settings.defaultZone = "UTC";

async function main() {
    logger.info("Starting the application...");

    await initializeLocalization();

    await initializeDatabase();
    await initializeTimeseries();

    await bot.start();

    worker.start();
    scheduler.start();

    await scheduleTasks();

    server.install(yookassa);
    server.install(widget);
    server.install(ws);
    server.start();

    logger.info("Application has started");
}

main();