import { Observable } from '../Observable'; import { MonoTypeOperatorFunction, OperatorFunction, TruthyTypesOf } from '../types'; export declare function single(predicate: BooleanConstructor): OperatorFunction>; export declare function single(predicate?: (value: T, index: number, source: Observable) => boolean): MonoTypeOperatorFunction; //# sourceMappingURL=single.d.ts.map