export declare const arrayBooleanToInt: (arr: boolean[]) => number[];
export declare const sumArrayBoolean: (arr: boolean[]) => number;
export declare const isObjectInArray: <A>(k: A, arr: A[]) => number | null;
export declare const isObjectAttrInArray: <A, B = string>(k: B, arr: { [a in keyof A]: B; }[], attr: keyof A) => number | null;
export declare const isNestedObjectAttrInArray: <A>(k: any, arr: any[], nest: any, attr?: string) => null;
export declare const createArrayOfLength: (n: number, idx?: number) => number[];
export declare const flattenArray: <A>(arr: (A | A[])[]) => A[];
export declare const compareArrayEntriesDepth: (a: any, b: any, attr: string) => number;
export declare const compareArrayEntriesWAttr: <A>(a: A, b: A, attr: keyof A) => number;
export declare const compareArrayEntries: <A>(a: A, b: A) => -1 | 0 | 1;
export declare const sortArrayByAttribute: (array: any[], attr?: string, asc?: boolean, compareFn?: (a: any, b: any, attr: string) => number) => any[];
export declare const isValueInArray: <A>(array: {
    [attrRest: string]: any;
}[], value: A, attr: string) => any;
export declare const findArrayIndexOfValue: (array: any[], value: any) => number | null;
export declare const findArrayIndexOfValueByAttr: (array: any[], value: any, attr?: string) => number | null;
export declare const getArrayLastNElements: (arr: any[], n: number) => any[];
export declare const shuffle: <A>(source: A[]) => A[];
export declare const arrayMove: <A = any>(array: A[], from: number, to: number) => A[];
export declare function notEmpty<TValue>(value: TValue | null | undefined): value is TValue;