/**
 * Identity function
 */
export declare const identity: <T>(arg: T) => T;
declare type SortingFunction = (a: any, b: any) => number;
/**
 * Turn a less-than-or-equal-to operation into a function which returns 1, 0, or -1 for sorting.
 * @param {(Object,Object) => Bool} leq - function implementing less-than-equal-to for the desired ordering.
 */
export declare function leqToNumericOrdering(leq: (a: any, b: any) => boolean): SortingFunction;
/**
 * Map a function over the arguments of a function before calling the function
 */
export declare function mapArguments(fn: (...args: Array<any>) => any, argMap: (arg: any) => any): (...args: Array<any>) => any;
/**
 * Compose orderings lexically to create a single combined ordering.
 */
export declare function lexicalCompose(...args: Array<SortingFunction>): SortingFunction;
export declare const defaultOrdering: SortingFunction;
export {};