import wpcom from 'calypso/lib/wp'; type WpcomRegisteredStatus = { status: string; mappable: string; other_site_domain?: string; other_site_domain_only?: boolean; }; type NonWpcomRegisteredStatus = { status: null; }; type WpcomRegistrationStatus = WpcomRegisteredStatus | NonWpcomRegisteredStatus; export function getWpcomRegistrationStatus( domainName: string, blogId: number ): Promise< WpcomRegisteredStatus | null > { return wpcom.req .get( `/domains/${ encodeURIComponent( domainName ) }/get-wpcom-registration-status`, { blog_id: blogId, apiVersion: '1.3', } ) .then( ( data: WpcomRegistrationStatus ) => ( data.status === null ? null : data ) ); }