import type { UpdatePolicy } from '../types';
import type { RuntimeDeliveryDiagnosticEvent } from '../runtime-delivery/diagnostics';
export declare const BUNDLE_DROP_NOT_INITIALIZED_MESSAGE = "BundleDrop has not been initialized. Call BundleDrop.init({ environment, ... }) before using OTA APIs or useBundleDrop().";
export declare const BUNDLE_DROP_DISABLED_MESSAGE = "BundleDrop is disabled. OTA APIs are running in no-op mode because BundleDrop.init({ enabled: false, ... }) was used.";
/**
 * Runtime options for `BundleDrop.init(...)`.
 */
export type BundleDropInitOptions = {
    /** Customer app environment shown in analytics, for example `production`, `staging`, or `development`. */
    environment: string;
    /** Defaults to `true`. Set to `false` to keep BundleDrop configured but fully no-op for the current app process. */
    enabled?: boolean;
    /** Initial OTA channel for this app process. Defaults to the static `defaultChannel` from `bundle.drop.config.js`. */
    channelName?: string;
    /** Startup behavior after local state hydration. Defaults to `manual`. */
    policy?: UpdatePolicy;
    /** Optional listener for human-readable status messages emitted during checks, downloads, and apply flow. */
    onStatusUpdate?: (status: string) => void;
    /** Optional sink for structured runtime-delivery diagnostic counter events. */
    onRuntimeDeliveryDiagnostic?: (event: RuntimeDeliveryDiagnosticEvent) => void;
    /** When `true`, startup performs only a resolve/check and skips download/apply even if policy would normally do more. */
    checkOnly?: boolean;
};
/**
 * Resolved runtime configuration currently active inside the singleton service.
 */
export type BundleDropRuntimeConfig = {
    /** Customer app environment sent to BundleDrop analytics and resolve payloads. */
    environment: string;
    /** Whether BundleDrop is active or running in disabled no-op mode. */
    enabled: boolean;
    /** Current active OTA channel used by singleton update actions. */
    channelName: string;
    /** Effective startup policy after defaults are applied. */
    policy: UpdatePolicy;
    /** Optional listener receiving status messages from runtime actions. */
    onStatusUpdate?: (status: string) => void;
    /** Optional sink receiving structured runtime-delivery diagnostic counter events. */
    onRuntimeDeliveryDiagnostic?: (event: RuntimeDeliveryDiagnosticEvent) => void;
    /** Whether startup is limited to a resolve/check without downloading or applying. */
    checkOnly: boolean;
};
export declare function resolveBundleDropRuntimeConfig(options: BundleDropInitOptions): BundleDropRuntimeConfig;
export declare function initializeBundleDropRuntime(options: BundleDropInitOptions): {
    config: BundleDropRuntimeConfig;
    alreadyInitialized: boolean;
};
export declare function getBundleDropRuntimeConfig(): BundleDropRuntimeConfig | null;
export declare function getBundleDropRuntimeConfigOrWarn(): BundleDropRuntimeConfig | null;
export declare function assertBundleDropInitialized(): BundleDropRuntimeConfig;
export declare function hasBundleDropBeenInitialized(): boolean;
export declare function setBundleDropChannel(channelName: string): BundleDropRuntimeConfig;
export declare function resetBundleDropRuntimeForTests(): void;