How to get, use, and close a DB connection using async functions

db-config.js

module.exports = {
  user: 'hr',
  password: 'oracle',
  connectString: 'localhost:1521/orcl',
  poolMax: 20,
  poolMin: 20,
  poolIncrement: 0
};

employees.js

const oracledb = require('oracledb');

function getEmployee(empId) {
  return new Promise(async function(resolve, reject) {
    let conn; // Declared here for scoping purposes.

    try {
      conn = await oracledb.getConnection();

      console.log('Connected to database');

      let result = await conn.execute(
        `select *
        from employees
        where employee_id = :emp_id`,
        [empId],
        {
          outFormat: oracledb.OBJECT
        }
      );

      console.log('Query executed');

      resolve(result.rows[0]);
    } catch (err) {
      console.log('Error occurred', err);

      reject(err);
    } finally {
      // If conn assignment worked, need to close.
      if (conn) {
        try {
          await conn.close();

          console.log('Connection closed');
        } catch (err) {
          console.log('Error closing connection', err);
        }
      }
    }
  });
}

module.exports.getEmployee = getEmployee;

index.js

const oracledb = require('oracledb');        
const dbConfig = require('./db-config.js');      
const employees = require('./employees.js');

async function startApp() {
  try {
    await oracledb.createPool(dbConfig);
    
    let emp = await employees.getEmployee(101);
 
    console.log(emp);
  } catch (err) {
    console.log('Opps, an error occurred', err);
  }
}

startApp();

package.json

{
  "name": "async-functions",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "Dan McGhan <dan.mcghan@oracle.com> (https://jsao.io/)",
  "license": "ISC",
  "dependencies": {
    "oracledb": "^1.13.1"
  }
}

this is not installing dependencies why bother to provide a package json when not providing db useless