import { AsyncState, AsyncMode } from './types';

/**
 * Extract data from AsyncState, throws if not ready.
 * - Success: returns data
 * - Stale mode (idle/pending/error with data): returns stale data
 * - Pending with promise: throws promise (for Suspense)
 * - Otherwise: throws error or AsyncNotReadyError
 */
export declare function wait<T, M extends AsyncMode>(state: AsyncState<T, M>): M extends "stale" ? T : T;
/**
 * Check if state has data available (success or stale).
 */
export declare function hasData<T, M extends AsyncMode>(state: AsyncState<T, M>): state is AsyncState<T, M> & {
    data: T;
};
/**
 * Check if state is loading (pending status).
 */
export declare function isLoading<T, M extends AsyncMode>(state: AsyncState<T, M>): state is AsyncState<T, M> & {
    status: "pending";
};
/**
 * Check if state has an error.
 */
export declare function isError<T, M extends AsyncMode>(state: AsyncState<T, M>): state is AsyncState<T, M> & {
    status: "error";
    error: Error;
};
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