export interface DeferredPromise<T> extends Promise<T> {
    resolve: () => void;
    reject: () => void;
}
export declare type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;
export declare type RequiredKnownKeys<T> = {
    [K in keyof T]: {} extends Pick<T, K> ? never : K;
} extends {
    [_ in keyof T]: infer U;
} ? ({} extends U ? never : U) : never;
export declare type OptionalKnownKeys<T> = {
    [K in keyof T]: string extends K ? never : number extends K ? never : {} extends Pick<T, K> ? K : never;
} extends {
    [_ in keyof T]: infer U;
} ? ({} extends U ? never : U) : never;