Form tParams = Promise; export default async purpose Obstacle( params : params: tParams ) const slug = await params; const productID = slug[1]; // other code below Launched generator functions such as the one below to save state between successive function phone calls: Replacing strings by numerical values was uncomplicated, https://alphawireless.com/future-proofing-american-utilities-why-900-mhz-is-critical-for-utility-communications/