blockstack search and lookup

search.js

    private searchUrl = 'https://core.blockstack.org/v1/search';
    public searchContacts(queryValue: string): Observable<ContactSearchResult[]> {
        if (!queryValue || queryValue.trim().length < 1) {
            return of(new Array<ContactSearchResult>());
        }
        return this.http.get<BlockstackSearchResponse>(this.searchUrl, { params: { query: queryValue.trim() } })
            .pipe(
                map((r: BlockstackSearchResponse) => {
                    return r.results.map(i => this.mapToSearchResult(i));
                })
            );
    }
    lookupProfile(userIdToLookup) {
        blockstack.lookupProfile(userIdToLookup)
            .then((profile) => {
                console.log('user profile:', profile);
            })
            .catch((err) => console.error(err));
    }