typeorm connection

const typeorm = require("typeorm");
const connectionManager = require("typeorm").getConnectionManager();

  //const connectionManager = typeorm.getConnectionManager();
  const connected = connectionManager.has("default");
  if(!connected){
      // ? load connection options from ormconfig or environment
        //const connectionOptions = await getConnectionOptions();
        connectionManager.create({
          //name: "default",
          type: "mysql",
          // "extra": {
          //   "socketPath": "/cloudsql/ooxxooxx"
          // },
          host: "oo.xx.oo.xx",
          port: 3306,
          username: "root",
          password: "ooxxooxx",
          database: "ooxxdb",
          synchronize: false,
          logging: true, // this.env === 'dev' ? true : false
          ssl: SSL,
          keepConnectionAlive: false,
      });
  }

  try {
    db = connectionManager.get();
    if(!connected){ 
        await db.connect(); 
        console.log('connect .... OK!');
    }
  }catch(error) {
    console.log("TypeORM Error: ", error);
  };

  var ranks = await db.query("select * from users");