function firstValueFromimport { firstValueFrom } from "https://deno.land/x/ldkit@v0.5.0/library/rxjs.ts"; firstValueFrom<T, D>(source: Observable<T>, config: FirstValueFromConfig<D>): Promise<T | D>firstValueFrom<T>(source: Observable<T>): Promise<T>Type ParametersTDParameterssource: Observable<T>config: FirstValueFromConfig<D>ReturnsPromise<T | D>Type ParametersTParameterssource: Observable<T>ReturnsPromise<T>