import type { File } from './file.js';
import { type Stats } from './stats.js';
export type FileContents = ArrayBufferView | string;
/**
 * Metadata about a FileSystem
 */
export interface FileSystemMetadata {
    /**
     * The name of the FS
     */
    name: string;
    /**
     * Whether the FS is readonly or not
     */
    readonly: boolean;
    /**
     * The total space
     */
    totalSpace: number;
    /**
     * The available space
     */
    freeSpace: number;
    /**
     * If set, disables File from using a resizable array buffer.
     * @default false
     */
    noResizableBuffers: boolean;
    /**
     * If set, disables caching on async file systems.
     * This means *sync operations will not work*.
     * It has no affect on sync file systems.
     * @default false
     */
    noAsyncCache: boolean;
    /**
     * The optimal block size to use with the file system
     * @default 4096
     */
    blockSize?: number;
    /**
     * Total number of (file) nodes available
     */
    totalNodes?: number;
    /**
     * Number of free (file) nodes available
     */
    freeNodes?: number;
    /**
     * The type of the FS
     */
    type: number;
}
/**
 * Provides a consistent and easy to use internal API.
 * Default implementations for `exists` and `existsSync` are included.
 * If you are extending this class, note that every path is an absolute path and all arguments are present.
 * @internal
 */
export declare abstract class FileSystem {
    /**
     * Get metadata about the current file system
     */
    metadata(): FileSystemMetadata;
    /**
     * Whether the sync cache should be disabled.
     * Only affects async things.
     * @internal @protected
     */
    _disableSync?: boolean;
    constructor(...args: any[]);
    ready(): Promise<void>;
    abstract rename(oldPath: string, newPath: string): Promise<void>;
    abstract renameSync(oldPath: string, newPath: string): void;
    abstract stat(path: string): Promise<Stats>;
    abstract statSync(path: string): Stats;
    /**
     * Opens the file at `path` with `flag`. The file must exist.
     * @param path The path to open.
     * @param flag The flag to use when opening the file.
     */
    abstract openFile(path: string, flag: string): Promise<File>;
    /**
     * Opens the file at `path` with `flag`. The file must exist.
     * @param path The path to open.
     * @param flag The flag to use when opening the file.
     */
    abstract openFileSync(path: string, flag: string): File;
    /**
     * Create the file at `path` with `mode`. Then, open it with `flag`.
     */
    abstract createFile(path: string, flag: string, mode: number): Promise<File>;
    /**
     * Create the file at `path` with `mode`. Then, open it with `flag`.
     */
    abstract createFileSync(path: string, flag: string, mode: number): File;
    abstract unlink(path: string): Promise<void>;
    abstract unlinkSync(path: string): void;
    abstract rmdir(path: string): Promise<void>;
    abstract rmdirSync(path: string): void;
    abstract mkdir(path: string, mode: number): Promise<void>;
    abstract mkdirSync(path: string, mode: number): void;
    abstract readdir(path: string): Promise<string[]>;
    abstract readdirSync(path: string): string[];
    /**
     * Test whether or not `path` exists.
     */
    exists(path: string): Promise<boolean>;
    /**
     * Test whether or not `path` exists.
     */
    existsSync(path: string): boolean;
    abstract link(target: string, link: string): Promise<void>;
    abstract linkSync(target: string, link: string): void;
    abstract sync(path: string, data: Uint8Array, stats: Readonly<Stats>): Promise<void>;
    abstract syncSync(path: string, data: Uint8Array, stats: Readonly<Stats>): void;
}