I am writing a (client-side) JavaScript library (a node/angular module). In this library, I make use of the URLSearchParams class.
const form = new URLSearch
In AWS Lambda which uses Node8.10, I had to do:
const {URLSearchParams} = require('url') const sp = new URLSearchParams(request.querystring)
or
const url = require('url') const sp = new url.URLSearchParams(request.querystring)