/// <reference types="react" />
export declare const isObject: (val: unknown) => val is Record<any, any>;
export declare const isFunction: (val: unknown) => val is Function;
export declare const isPromise: <T = any>(val: unknown) => val is Promise<T>;
export declare const upperCaseFirst: (str: string) => string;
export declare const clamp: (num: number, min: number, max: number) => number;
export declare function preventDefault(event: React.TouchEvent<HTMLElement> | TouchEvent, isStopPropagation?: boolean): void;