export declare const wait: (ms: number) => Promise<void>;
export declare const withTime: <TArgs extends unknown[], TRet>(func: (...args: TArgs) => TRet | Promise<TRet>) => (...args: TArgs) => Promise<[time: number, ret: TRet]>;
export declare function range(start: number, end: number): Generator<number, void, unknown>;
export type ResolvedType<T> = T extends PromiseLike<infer U> ? U : T;
export declare const pick: <T, K extends keyof T>(obj: T, ...keys: K[]) => Pick<T, K>;
export declare const omit: <T, K extends keyof T>(obj: T, ...keys: K[]) => Omit<T, K>;
export declare const decodeBase64: (base64: string) => Uint8Array;
export declare class NotImplementedError extends Error {
    constructor(message: string);
}
export declare const throwError: () => never;
export declare const assertNever: (x: never) => never;
export type Diff<T, U> = T extends U ? never : T;
export declare const pictMimeDict: {
    readonly ".jpeg": "image/jpeg";
    readonly ".jpg": "image/jpeg";
    readonly ".png": "image/png";
    readonly ".pdf": "application/pdf";
    readonly ".bmp": "image/bmp";
    readonly ".gif": "image/gif";
    readonly ".svg": "image/svg+xml";
    readonly ".tif": "image/tiff";
    readonly ".tiff": "image/tiff";
};
export declare const throttle: <TArgs extends unknown[]>(func: (...args: TArgs) => unknown, waitms: number, initialWaitms?: number) => (...args: TArgs) => void;