import type { MaybeFn, MaybeGetter } from '@rhao/types-base';
export declare function RequestSingle(): import("../middleware").RequestMiddlewareObject<any>;
declare module '@rhao/request' {
    interface RequestBasicOptions {
        /**
         * 单例模式，如果设为 `true`，则存在未完成的执行时不会再执行
         * @default false
         */
        single?: MaybeFn<boolean, [newParams: unknown[], oldParams: unknown[]]>;
        /**
         * 强制单例模式，如果设为 `true`，在执行前将取消之前的所有执行
         *
         * @default false
         */
        singleWithForce?: MaybeGetter<boolean>;
    }
}