import { Mapper, Predicate } from "../types";
export declare function throwIfNotIterable<T>(sourceIterable: Iterable<T>): void;
export declare function thowIfNotValidPredicate<T>(predicate: Predicate<T>): void;
export declare function thowIfNotValidMapper<T, R>(mapper: Mapper<T, R>): void;
export declare function throwIfNotValidIterator<T, TR, TN>(sourceIterator: Iterator<T, TR, TN>): void;