import type { CompareFn_ } from "@principia/prelude/Ord";
import type { LazyList } from "./model";
export declare const head: <A>(xs: LazyList<A>) => A;
export declare const tail: <A>(xs: LazyList<A>) => LazyList<A>;
export declare const rangeBy_: (start: number, end: number, step: (n: number) => number) => LazyList<number>;
export declare const init: <A>(xs: LazyList<A>) => LazyList<A>;
export declare const last: <A>(xs: LazyList<A>) => A;
export declare const take_: <A>(xs: LazyList<A>, n: number) => LazyList<A>;
export declare const take: (n: number) => <A>(xs: LazyList<A>) => LazyList<A>;
export declare const lines: (s: string) => LazyList<string>;
export declare function sortBy_<A>(xs: LazyList<A>, cmp: CompareFn_<A>): LazyList<A>;
export declare const sortBy: <A>(cmp: CompareFn_<A>) => (xs: LazyList<A>) => LazyList<A>;
export declare const append_: <A>(xs: LazyList<A>, ys: LazyList<A>) => LazyList<A>;
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