import { Lazy } from './lazy';
/**
 * @description lazy linked list
 * */
export declare class LazyList<A> extends Lazy<A> {
    private isHead?;
    private tail?;
    private mapper?;
    constructor(value?: () => A, tail?: LazyList<A>, mapper?: (x: any) => A);
    append(a: () => A): LazyList<A>;
    appendRaw(a: A): LazyList<A>;
    appendAll(xs: A[]): LazyList<A>;
    /** @description non-lazy */
    toArray(thisArg?: LazyList<A>): A[];
    /** @override */
    map<B>(f: (a: A) => B): LazyList<B>;
}
export declare namespace LazyList {
    const headSymbol: unique symbol;
    const empty: <A>() => LazyList<A>;
    const fromArray: <A>(xs: A[]) => LazyList<A>;
}