import { ApiService } from '../../services/api';
import { ResponseData } from './types';
export interface ConfigOptions {
    apiKey: string;
    backendUrl: string;
    onCheck?: (data: ResponseData) => void;
}
export declare class GlobalConfig {
    private _apiService;
    get apiService(): ApiService;
    private static _instance;
    static get instance(): GlobalConfig;
    static initialize(options: ConfigOptions): void;
    static deactivate(): void;
    constructor({ apiKey, backendUrl, onCheck }: ConfigOptions);
    private _apiKey;
    private _isValidApiKey;
    get isValidApiKey(): boolean;
    set isValidApiKey(value: boolean);
    private _getCheckKeyData;
}
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