interface Sliceable {
    length: number;
    slice: (i: number, j: number) => any;
}
export declare function chunk<T extends Sliceable>(str: T, size: number): T[];
export declare function exclude<T>(item: T, list: T[]): T[];
export declare function randomElement<T>(list: T[]): T;
export declare function sortArrayByKey<T extends Record<keyof T, any>>(array: T[], sortKey: keyof T): T[];
export declare function arrayEqual<T>(a: T[], b: T[]): boolean;
/** Non-empty tuple type — at least one element required at compile time. */
export type NonEmptyArray<T> = readonly [T, ...T[]];
export declare function isNonEmptyArray<T>(arr: readonly T[]): arr is NonEmptyArray<T>;
export declare function nonEmptyArray<T>(arr: readonly T[]): NonEmptyArray<T>;
export {};
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