export type Breaker = {};
export type EventHandler = (event: Event) => boolean | void;
export declare const _isArray: (arg: any) => arg is any[];
export declare function _eachArray<E = any>(obj: E[] | null | undefined, iterator: (value: E, key: number) => void | Breaker, thisArg?: any): void;
export declare const _trim: (str: string) => string;
export declare const _bind_instance_methods: (obj: Record<string, any>) => void;
/**
 * @param {*=} obj
 * @param {function(...*)=} iterator
 * @param {Object=} thisArg
 */
export declare function _each(obj: any, iterator: (value: any, key: any) => void | Breaker, thisArg?: any): void;
export declare const _extend: (obj: Record<string, any>, ...args: Record<string, any>[]) => Record<string, any>;
export declare function _includes<T = any>(str: T[] | string, needle: T): boolean;
export declare const _isFunction: (f: any) => f is (...args: any[]) => any;
export declare const _isUndefined: (obj: any) => obj is undefined;
export declare const _register_event: (element: Element | Window | Document | Node, type: string, handler: EventHandler, oldSchool?: boolean, useCapture?: boolean) => void;
export declare const _safewrap: <F extends (...args: any[]) => any = (...args: any[]) => any>(f: F) => F;
export declare const _safewrap_instance_methods: (obj: Record<string, any>) => void;
export declare function _copyAndTruncateStrings<T extends Record<string, any> = Record<string, any>>(object: T, maxStringLength: number | null): T;
export declare const _isBlockedUA: (ua: string) => boolean;
export declare function _findClosestLink(element: HTMLElement | null): HTMLElement | null;
export declare function _cleanObject(obj: Record<string, any>): Record<string, any>;
export declare function isWindowAvailable(): boolean;
export declare function generateRandom(length?: number): string;
export declare function toCamelCase(str: string): string;
export declare function convertKeysToCamelCase(obj: Record<string, any>): Record<string, any>;