import { single as higherOrder } from '../operators/single'; /** * Returns an Observable that emits the single item emitted by the source Observable that matches a specified * predicate, if that Observable emits one such item. If the source Observable emits more than one such item or no * such items, notify of an IllegalArgumentException or NoSuchElementException respectively. * * * * @throws {EmptyError} Delivers an EmptyError to the Observer's `error` * callback if the Observable completes before any `next` notification was sent. * @param {Function} predicate - A predicate function to evaluate items emitted by the source Observable. * @return {Observable} An Observable that emits the single item emitted by the source Observable that matches * the predicate. . * @method single * @owner Observable */ export function single(predicate) { return higherOrder(predicate)(this); } //# sourceMappingURL=single.js.map