import { FeatureFlag, Segment, SegmentId, EvaluationContext } from '../advanced/types';
import { FlagProvider, RemoteProviderConfig, FlagChangeListener, ProviderHealth, ProviderStats } from './types';
/**
 * Remote flag provider that fetches flags from an API endpoint.
 */
export declare class RemoteProvider implements FlagProvider {
    readonly name: string;
    readonly priority: number;
    private flags;
    private segments;
    private listeners;
    private ready;
    private readonly config;
    private health;
    private stats;
    private abortController;
    constructor(config: RemoteProviderConfig);
    /**
     * Initialize the provider by fetching initial flags.
     */
    initialize(): Promise<void>;
    /**
     * Get all flags.
     */
    getFlags(): Promise<readonly FeatureFlag[]>;
    /**
     * Get a flag by key.
     */
    getFlag(key: string): Promise<FeatureFlag | null>;
    /**
     * Refresh flags from the remote server.
     */
    refresh(): Promise<void>;
    /**
     * Get all segments.
     */
    getSegments(): Promise<readonly Segment[]>;
    /**
     * Get a segment by ID.
     */
    getSegment(id: SegmentId): Promise<Segment | null>;
    /**
     * Check if the provider is ready.
     */
    isReady(): boolean;
    /**
     * Check if the provider is healthy.
     */
    isHealthy(): Promise<boolean>;
    /**
     * Get provider health status.
     */
    getHealth(): ProviderHealth;
    /**
     * Get provider statistics.
     */
    getStats(): ProviderStats;
    /**
     * Subscribe to flag changes.
     */
    subscribe(listener: FlagChangeListener): () => void;
    /**
     * Shutdown the provider.
     */
    shutdown(): Promise<void>;
    /**
     * Update the context for subsequent requests.
     */
    setContext(context: EvaluationContext): void;
    private fetchFlags;
    private fetchSingleFlag;
    private fetchSegments;
    private request;
    private buildUrl;
    private buildHeaders;
    private buildContextParams;
    private deserializeFlag;
    private deserializeSegment;
    private recordSuccess;
    private recordFailure;
    private emitChange;
    private updateStats;
    private sleep;
    private log;
}
/**
 * Create a remote provider instance.
 */
export declare function createRemoteProvider(config: RemoteProviderConfig): RemoteProvider;