import { MaybeRef } from '@wakeadmin/h';
import { Ref } from '@wakeadmin/demi';
export interface UsePromiseCacheState {
    result?: any;
    error?: Error;
    queue?: [(result: any) => void, (err: Error) => void][];
}
/**
 * @experimental
 */
export declare function usePromise<T>(key: MaybeRef<string | null | undefined>, getter: (key: string) => Promise<T>, cache?: Map<string, UsePromiseCacheState>): {
    result: Ref<T | undefined>;
    loading: Ref<boolean>;
    error: Ref<Error | undefined>;
};
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