import type { LogLevel } from '../types/common';
declare global {
    interface Window {
        _sdkMarks: Set<string>;
    }
}
type PlainObject = Record<string, unknown>;
export declare function isObject(value: unknown): value is PlainObject;
export declare function deepEqualObject(object1: PlainObject, object2: PlainObject): boolean;
export declare function debounce<T extends (...args: never[]) => Promise<void>>(callback: T, delay: number, immediate?: boolean): (this: unknown, ...args: Parameters<typeof callback>) => Promise<void>;
export declare function prepareLogLevel(level?: LogLevel): LogLevel;
export declare function isAnalyticsActive(flag?: boolean): boolean;
export declare function markSDKInstance(mark: string): void;
export declare function getSDKInstancesMarks(): string[];
export declare function safeCall<T>(handler: () => Promise<T>, onError?: (error: unknown) => void): Promise<T | undefined>;
export {};