Parse the supplied query string (or window.location.search by default)
into a typed UrlParams snapshot. Bookmarks use the URL fragment so their
larger payload never enters the server request.
Pass an explicit search string in tests; in production main.ts calls this
once with no argument and threads the result through the rest of the app.
Parse the supplied query string (or
window.location.searchby default) into a typedUrlParamssnapshot. Bookmarks use the URL fragment so their larger payload never enters the server request.Pass an explicit
searchstring in tests; in production main.ts calls this once with no argument and threads the result through the rest of the app.