/**
 * Checks if `value` is a `function`.
 * @param value The value to check
 * @returns Returns `true` if `value` is a function, else `false`.
 */
export declare function isFunction(value: any): value is (...args: any[]) => any;
export declare const slice: (start?: number | undefined, end?: number | undefined) => any[];
export declare const noop: () => void;
/** set dom attribute for consistent behavior */
export declare const updateDomAttr: (dom: HTMLElement, name: string, value: any) => void;