TypeScript - parse route parameters

parse-route-parameters.ts

type ParseRouteParameters<Route> = Route extends `${string}/:${infer Param}/${infer Rest}`
  ? { [Entry in Param | keyof ParseRouteParameters<`/${Rest}`>]: string }
  : Route extends `${string}/:${infer Param}`
  ? { [Entry in Param]: string }
  : {};

type X = ParseRouteParameters<'/api/:what/:is/notyou/:happening'>;

// type X = {
//   what: string,
//   is: string,
//   happening: string,
// }