/// <reference types="monaco-editor/monaco" />
import { MaybeRef } from '@vueuse/core';
import { File } from '../../core';
import { Monaco, PromiseFnReturnType } from './types-helper';
export declare const getProjectFileBaseUrl: (projectId: string) => string;
export declare const getFileUri: (mona: Monaco, projectId: string, filename: string) => monaco.Uri;
export declare const getFileLanguage: (file: File) => "css" | "plaintext" | "html" | "typescript" | "javascript";
export declare const genRandomStr: () => string;
export declare const hash: (str: string) => string;
export declare const safeId: (id?: string | undefined) => string;
export declare const generateProjectId: (id?: string | undefined) => string;
export declare const mustBeRef: <T>(value: MaybeRef<T>) => import("vue").ComputedRef<T>;
export interface SingletonPromiseReturn<Args extends any[], R> {
    (...args: Args): Promise<R>;
    /**
     * Reset current staled promise.
     * Await it to have proper shutdown.
     */
    reset: () => Promise<void>;
}
export declare function createSingletonPromise<Fn extends (...args: any[]) => Promise<any>>(fn: Fn): SingletonPromiseReturn<Parameters<Fn>, PromiseFnReturnType<Fn>>;