Express has simple and extended query parsers. simple is based on Node’s queryparser and extended is based on qs

However, if we need to override the default options of qs, we could do as below,

const express = require('express');
const qs = require('qs');

const app = express();
app.set('query parser', (str) => qs.parse(str, { arrayLimit: 100 }));

This will use qs as the default query parser & override its default arrayLimit size from 20 to 100.