date string parse bug

const mysql = require('mysql2/promise');

mysql.createConnection({
    host: '127.0.0.1',
    user: 'app',
    password: 'password',
    database: 'app',
}).then((conn) => {
    conn.query('SELECT DATE(?) AS `date_field`', ['2019-08-30']).then(([result]) => {
        console.log(result);
    }).then(() => {
        return conn.close();
    })
});

Date object show 2019-08-29 but date string is 2019-08-30

node version: v10.17.0 mysql2 version: 2.0.2

[tugrul]

dateStrings: true connection option able to use to workaround

[sidorares]

But I tried to evaluate new Date(‘2019-08-30’); is getting correct value 2019-08-30T00:00:00.000Z

the server returns “2019-08-30” string to us, and this library tries it’s best to convert that into Date object

if you don’t pass tz, it’s using “local” timezone - https://github.com/sidorares/node-mysql2/blob/a0ea513b0d4929e6ee61639a09f38a85ac01f7fa/lib/packets/packet.js#L611

> new Date(2019, 7, 30)
2019-08-29T14:00:00.000Z