/// <reference types="node" />
import { DirectoryJSON } from "memfs";
import { WASIFileSystem } from "./types";
interface NativeFs {
    type: "native";
}
interface DevFs {
    type: "dev";
}
interface ZipFsFile {
    type: "zipfile";
    zipfile: string;
    mountpoint: string;
    async?: boolean;
}
interface ZipFsUrl {
    type: "zipurl";
    zipurl: string;
    mountpoint: string;
    async?: boolean;
}
interface ZipFs {
    type: "zip";
    data: Buffer;
    mountpoint: string;
}
interface ZipFsAsync {
    type: "zip-async";
    getData: () => Promise<Buffer>;
    mountpoint: string;
}
interface MemFs {
    type: "mem";
    contents?: DirectoryJSON;
}
export declare type FileSystemSpec = NativeFs | ZipFs | ZipFsAsync | ZipFsFile | ZipFsUrl | MemFs | DevFs;
export declare function createFileSystem(specs: FileSystemSpec[], nativeFs?: WASIFileSystem): WASIFileSystem;
export {};