import { Transducer } from "./transducer";
import { Predicate } from "../predicates";
export declare class TakeWhileTransducer<A> implements Transducer<A, A> {
    predicate: Predicate<A>;
    constructor(predicate: Predicate<A>);
    async_(iterable: AsyncIterable<A>): AsyncIterable<A>;
    sync(iterable: Iterable<A>): Iterable<A>;
}
export declare function takeWhile<T>(predicate: (t: T) => boolean): TakeWhileTransducer<T>;