/**
* DevExtreme (core/utils/deferred.d.ts)
* Version: 25.2.7
* Build date: Tue May 05 2026
*
* Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
/**
 * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
 */
interface Callback<T> {
    // eslint-disable-next-line @typescript-eslint/prefer-function-type
    (value: T, ...args: T[]): void;
}
/**
 * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
 */
export class DeferredObj<T> {
    constructor();
    state(): 'pending' | 'rejected' | 'resolved';
    always(alwaysCallback?: Callback<T>): DeferredObj<T>;
    catch(catchCallback?: Callback<T>): DeferredObj<T>;
    then(resolveCallback?: Callback<T>, rejectCallback?: Callback<T>): DeferredObj<T>;
    done(doneCallback?: Callback<T>): DeferredObj<T>;
    fail(failCallback?: Callback<T>): DeferredObj<T>;
    progress(progressCallback?: Callback<T>): DeferredObj<T>;
    notify(...args: T[]): DeferredObj<T>;
    notifyWith(context: DeferredObj<T>, args?: T[]): DeferredObj<T>;
    reject(...args: T[]): DeferredObj<T>;
    rejectWith(context: DeferredObj<T>, args?: T[]): DeferredObj<T>;
    resolve(...args: T[]): DeferredObj<T>;
    resolveWith(context: DeferredObj<T>, args?: T[]): DeferredObj<T>;
    promise(target?: T): Promise<T>;
}

/**
 * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
 */
export function Deferred<T>(): DeferredObj<T>;

/**
 * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
 */
export interface PromiseType<T> { }

/**
  * 
  * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
  */
 export type DxPromise<T = void> = {} extends PromiseType<T> ? Promise<T> : PromiseType<T>;

/**
 * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
 */
export type DxExtendedPromise<T> = DxPromise<T> & {
    then<TResult1 = T, TResult2 = never>(
        onFulfilled?: ((value: T, extraParameters?: any) => TResult1 | PromiseLike<TResult1>) | undefined | null,
        onRejected?: ((reason: any) => TResult2 | PromiseLike<TResult2>) | undefined | null
    ): PromiseLike<TResult1 | TResult2>;
};

/**
 * @deprecated Attention! This type is for internal purposes only. If you used it previously, please submit a ticket to our {@link https://supportcenter.devexpress.com/ticket/create Support Center}. We will check if there is an alternative solution.
 */
export function when<T>(...args: (DeferredObj<T> | T)[]): DeferredObj<T>;