TypeORM Connectio Manager

typeORM_db.ts

class Database {
  private connectionManager: ConnectionManager;
  private readonly options: ConnectionOptions = {
    type: "postgres",
    host: "localhost",
    port: 5432,
    username: "postgres",
    password: "postgres",
    database: "pony_dev",
    entities: [Item],
    synchronize: true,
    logging: false
  };

  constructor() {
    this.connectionManager = getConnectionManager();
  }

  connect = async (): Promise<Connection> => {
    return await createConnection(this.options);
  };

  public async getConnection() {
    const CONNECTION_NAME = `default`;
    let connection: Connection;

    try {
      if (this.connectionManager.has(CONNECTION_NAME)) {
        console.log(`Using existing connection ...`);
        connection = await this.connectionManager.get(CONNECTION_NAME);

        if (!connection.isConnected) {
          connection = await connection.connect();
        }
      } else {
        console.log(`Creating connection ...`);
        connection = await createConnection(this.options);
      }
      return connection;
    } catch (error) {
      throw new Error(error);
    }
  }
}

export const dbConnect = async () => {
  try {
    const database = new Database();
    const dbConn: Connection = await database.getConnection();
    return dbConn;
  } catch (error) {
    throw new Error(error);
  }
};