export declare const list: {
    'List.filter': (arr: number[], lambda: (item1: number, item2: number) => number) => number[];
    'List.map': (arr: number[], lambda: (item: number) => number) => number[];
    'List.sort': (arr: number[], lambda: (item1: number, item2: number) => number) => number[];
    'List.reverse': (arr: number[]) => number[];
    'List.append': (arr: number[], val: number) => number[];
    'List.prepend': (arr: number[], val: number) => number[];
    'List.contains': (arr: number[], val: number) => number;
    'List.concat': (arr: number[], arr2: number[]) => number[];
    'List.join': (arr: number[], separator: string) => string;
    'List.range': (from: number, to?: number) => number[];
};