import type { Stats as NodeStats } from 'node:fs';
import type { Compiled } from '../runtime/allocator.ts';
import { type TqdmOnProgress } from '../helpers/tqdm.ts';
export type Stats = Pick<NodeStats, 'isFile' | 'size'>;
export type Dlopen = <const S extends Deno.ForeignLibraryInterface>(filename: string | URL, symbols: S) => Deno.DynamicLibrary<S> | Promise<Deno.DynamicLibrary<S>>;
export type FFICallback = (x: {
    parameters: Deno.NativeType[];
    result: Deno.NativeResultType;
}, cb: (...a: any[]) => any) => any;
export declare class WebEnv {
    NAME: string;
    PLATFORM: string;
    CPU_DEVICE: string;
    DB_VERSION: number;
    DEVICES: Record<string, typeof Compiled>;
    get OSX(): boolean;
    get WINDOWS(): boolean;
    get CACHE_DIR(): string;
    get CACHE_DB(): string;
    notImplemented: () => never;
    readTextFile: (path: string) => Promise<string>;
    writeTextFile: (path: string, data: string) => Promise<void>;
    private _cache;
    readFile: (path: string) => Promise<Uint8Array>;
    writeFile: (path: string, data: Uint8Array) => Promise<void>;
    remove: (path: string) => Promise<void>;
    realPath: (...paths: string[]) => string;
    stat: (path: string) => Promise<Stats>;
    statSync: (path: string) => Stats;
    tempFile: (ext?: string) => Promise<string>;
    mkdir: (path: string) => Promise<void>;
    fetchSave: (url: string, path?: string, onProgress?: TqdmOnProgress) => Promise<string>;
    writeStdout: (p: string) => void;
    homedir: () => string;
    gunzip: (buffer: ArrayBuffer) => Promise<ArrayBuffer>;
    args: () => string[];
    machine: () => string;
    exit: (code: number) => never;
    exec: (cmd: string) => Promise<string>;
    prompt: (msg: string, def?: string) => Promise<string | null>;
    sha256: (data: Uint8Array) => Uint8Array;
    dlopen: Dlopen;
    ptr: (buffer: ArrayBuffer, offset?: number) => any;
    ptrToU64: (ptr: any) => bigint;
    u64ToPtr: (u64: bigint) => any;
    getCString: (ptr: any) => string;
    getArrayBuffer: (ptr: any, byteLength: number, offset?: number) => ArrayBuffer;
    callback: FFICallback;
    private _db;
    private _open_db;
    disk_get: (table: string, key: string) => Promise<any | undefined>;
    disk_put: (table: string, key: string, value: string | Uint8Array) => Promise<void>;
}