During the transition to typescript, `createPath` function has changed from this: ``` function createPath(location) { var pathname = location.pathname, search = location.search, hash = location.hash; var path = pathname || '/'; if (search && search !== '?') path += search.charAt(0) === '?' ? search : "?" + search; if (hash && hash !== '#') path += hash.charAt(0) === '#' ? hash : "#" + hash; return path; } ``` to this ``` export function createPath({ pathname = '/', search = '', hash = '' }: PartialPath) { return pathname + search + hash; } ``` You are no longer ensuring that passed `search` and `hash` are prefixed, which kind of broke our site. You should either restore the old behavior or document the breaking change.