Tricklerate Property Missing from Typescript?

Hello.

Absolutely great job on this package being built. I've been playing around with this for some demo work, using NextJS/React/Typescript. So I've had to install npm packages for the types as well for NProgress. There is a property in the configuration called trickleRate (mentioned at https://www.npmjs.com/package/nprogress#tricklerate-and-tricklespeed) but when I used that property, I've had typescript throwing an error that says the property is not there.

If I'm missing something by raising this query, really sorry but would be very grateful if you could check and do the needful. Requesting assistance.

Cheers.