export declare function isFunction(x: any): x is Function;
export declare const any: (fn: Function, list: any[]) => boolean;
export declare const identity: (x: any) => any;
export declare const isNill: (x: any) => boolean;
export declare const difference: (first: any[], second: any[]) => any[];
export declare const allPass: (preds: any) => (...args: any[]) => boolean;