/**
 * Null-safe string local compare.
 * If a is falsy return 1.
 * If b is falsy return -1.
 * Else local compare a to b
 * @param a
 * @param b
 */
declare const stringCompare: (a?: string, b?: string) => number;
/**
 * Null-safe string number compare.
 * If a is falsy return 1.
 * If b is falsy return -1.
 * Else compare a to b
 * @param a
 * @param b
 */
declare const numberCompare: (a?: number, b?: number) => number;
/**
 * Execute a null/undefined safe compare with the provided compare function.
 * If both inputs are null/undefined return 0.
 * If a is null/undefined but not b, returns 1.
 * If b is null/undefined but not a, returns -1.
 * Else execute compare;
 * @param compareFn
 * @param reverse
 */
declare const nullSafeCompare: <A, B>(compareFn: (a: A, b: B) => number, reverse?: boolean) => (a: A, b: B) => any;

export { nullSafeCompare, numberCompare, stringCompare };