/**
 * Remote Configuration Manager
 *
 * Handles loading, fetching, caching, and applying remote configuration
 * from the /decide endpoint. Supports bootstrap data for instant loading.
 *
 * Config merge precedence: client init > remote > defaults
 * Uses _initConfig snapshot to distinguish user-set values from cache-applied values.
 *
 * @see docs/patterns/tracker-feature-lifecycle.md
 */
import { VTiltConfig, RemoteConfig } from "../types";
import type { FeatureManager } from "./feature-manager";
export interface RemoteConfigHost {
    getConfig(): VTiltConfig;
    updateConfig(config: Partial<VTiltConfig>): void;
    buildEndpointUrl(path: string): string;
    __loaded: boolean;
    featureManager: FeatureManager;
}
export type RemoteConfigCallback = (config: RemoteConfig) => void;
export declare class RemoteConfigManager {
    private _host;
    private _remoteConfig;
    private _onApply?;
    private _onLoad?;
    private _initConfig;
    constructor(host: RemoteConfigHost);
    get config(): RemoteConfig | null;
    onApply(callback: RemoteConfigCallback): void;
    onLoad(callback: RemoteConfigCallback): void;
    /**
     * Load remote config from cache and fetch fresh in background.
     * Priority: 1) Bootstrap config 2) Window bootstrap 3) localStorage cache
     */
    load(): void;
    private _fetch;
    /**
     * Apply remote config to current config.
     * Uses _initConfig snapshot: only values NOT set by the user in vt.init() are applied.
     * Feature config is mapped via FeatureManager descriptors; non-feature config is handled inline.
     *
     * @param fromCache When true, analytics / chat / privacy toggles are skipped to avoid
     *   acting on stale localStorage data before the fresh /decide fetch resolves.
     *   Invisible features (e.g. session recording) may still arm from cache.
     */
    private _apply;
}