Error "MODULE NOT FOUND", module not found

Question

I'm trying to solve a path problem:

This is my file structure: /www/html/

• /database/

1. databaseConnection.js

• /script/

1. LoginPageScript.js

• Server.js
• index.html

In the database js file, the following code:

const mysql = require('mysql2');

const pool = mysql.createPool({
  connectionLimit: 10,
  host: process.env.DB_HOST,
  port: process.env.DB_PORT,
  user: process.env.DB_USER,
  password: process.env.DB_PASSWORD,
  database: process.env.DATABASE
});


pool.getConnection((err, connection) => {
  if (err) {
    console.error('Error connetcting to database: ', err);
    return;
  }
  console.log('Connection to database succefully established!');
});

module.exports = { pool };

I assume the pool module is exported

Now I'm trying to import the pool into another script, in this case LoginPageScript.js, using:

const { pool } = require('../database/databaseConnection.js');

But the error thrown is:

Cannot find module '../database/databaseConnection'
Require stack:
- /var/www/html/scripts/LoginPageScript.js
- /var/www/html/server.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:956:15)
    at Module._load (node:internal/modules/cjs/loader:804:27)
    at Module.require (node:internal/modules/cjs/loader:1022:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (/var/www/html/scripts/LoginPageScript.js:3:18)
    at Module._compile (node:internal/modules/cjs/loader:1120:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1174:10)
    at Module.load (node:internal/modules/cjs/loader:998:32)
    at Module._load (node:internal/modules/cjs/loader:839:12)
    at Module.require (node:internal/modules/cjs/loader:1022:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/var/www/html/scripts/LoginPageScript.js',
    '/var/www/html/server.js'
  ]
}

I tried trying different paths, for example:

1. /database/databaseConnection.js
2. ./database/databaseConnection.js
3. ../database/databaseConnection.js

None of them seem to work

Answer 1

Try to traverse the databaseConnection.js file via dot comments.

and try using:

const { pool } = require('./database/databaseConnection.js');