type BaseQuery<T> = {
    revalidate: () => Promise<T>;
    fetch: () => Promise<T>;
    subscribe: () => () => void;
};
export type QueryState<T> = {
    promise: SuspensePromise<T>;
    error: null;
    value: null;
    isRevalidating: false;
    isFetching: true;
} | {
    promise: SuspensePromise<T>;
    error: Error;
    value: null;
    isRevalidating: false;
    isFetching: false;
} | {
    promise: SuspensePromise<T>;
    error: null;
    value: T;
    isRevalidating: false;
    isFetching: false;
} | {
    promise: SuspensePromise<T>;
    error: null;
    value: T;
    isRevalidating: true;
    isFetching: false;
};
export type Query<T> = BaseQuery<T> & QueryState<T>;
export declare function query<T>(fetcher: () => Promise<T>): Query<T>;
type PendingPromise<T> = Promise<T> & {
    status: "pending";
};
type FulfilledPromise<T> = Promise<T> & {
    status: "fulfilled";
    value: T;
};
type RejectedPromise<T> = Promise<T> & {
    status: "rejected";
    reason: Error;
};
export type SuspensePromise<T> = PendingPromise<T> | FulfilledPromise<T> | RejectedPromise<T>;
export declare function createPendingPromise<T>(promise: Promise<T>): PendingPromise<T>;
export declare function createFulfilledPromise<T>(promise: Promise<T>, value: T): FulfilledPromise<T>;
export declare function createRejectedPromise<T>(promise: Promise<T>, reason: Error): RejectedPromise<T>;
export declare function createObservablePromise<T>(promise: Promise<any>, abortController: AbortController, onSettled: (promise: FulfilledPromise<T> | RejectedPromise<T>) => void): SuspensePromise<T>;
export {};