import { ResolvablePromise } from 'revedraw/types/utils';
import { ExcalidrawDataSource } from '../types';
export declare const LIBRARY_ITEMS_KEY = "excalidraw_cn_library_items";
export declare const throttleRAF: <T extends any[]>(fn: (...args: T) => void, opts?: {
    trailing?: boolean;
}) => {
    (...args: T): void;
    flush(): void;
    cancel(): void;
};
export declare const withBatchedUpdates: <TFunction extends ((event: any) => void) | (() => void)>(func: Parameters<TFunction>["length"] extends 0 | 1 ? TFunction : never) => TFunction;
export declare const withBatchedUpdatesThrottled: <TFunction extends ((event: any) => void) | (() => void)>(func: Parameters<TFunction>["length"] extends 0 | 1 ? TFunction : never) => {
    (...args: Parameters<TFunction>): void;
    flush(): void;
    cancel(): void;
};
export declare const distance2d: (x1: number, y1: number, x2: number, y2: number) => number;
export declare const resolvablePromise: () => ResolvablePromise<any>;
export declare const getLibraryItemsFromLocal: () => any;
export declare const mergeLibraryItemsFromLocal: (fileDataObj: ExcalidrawDataSource) => ExcalidrawDataSource;