simple mysql-cli (only JavaScript)

run-query.mjs

import readline from 'node:readline/promises';
import { createConnection } from 'mysql2/promise';

let stdin = '';

await new Promise((resolve) => {
  readline
    .createInterface({ input: process.stdin })
    .on('line', (line) => {
      stdin += line + '\n';
    })
    .once('close', () => {
      stdin = stdin.trim();
      resolve();
    });
});

const [dbUri] = process.argv.slice(2);

const connection = await createConnection({
  uri: dbUri,
});

try {
  const [rows] = await connection.query(stdin);
  console.log('Rows:', rows);
} catch (error) {
  console.error('Error executing query:', error);
  process.exit(1);
} finally {
  if (connection && connection.end) {
    await connection.end();
  }
}