export declare const getEasyFs: import("@gaubee/util").FuncRemember<() => Promise<{
    writeFile: (filePath: string, data: FileSystemWriteChunkType, opts?: {
        append?: boolean;
    }) => Promise<void>;
    createWriteStream: (filePath: string) => Promise<FileSystemWritableFileStream>;
    readFileText: (filePath: string) => Promise<string>;
    readFileBinary: (filePath: string) => Promise<Uint8Array<ArrayBuffer>>;
    createReadStream: (filePath: string) => Promise<ReadableStream<Uint8Array<ArrayBuffer>>>;
    readdir: (dirPath: string) => Promise<string[]>;
    mkdir: (dirPath: string, opts?: {
        recursive?: boolean;
    }) => Promise<void>;
    exists: (path: string) => Promise<boolean>;
    stat: (path: string) => Promise<{
        readonly isFile: true;
        readonly size: number;
        readonly lastModified: number;
    } | {
        readonly isFile: false;
        readonly size?: undefined;
        readonly lastModified?: undefined;
    }>;
    rm: (path: string, opts?: {
        recursive?: boolean;
    }) => Promise<boolean>;
}>, () => Promise<FileSystemDirectoryHandle> | undefined>;
export type EasyFS = Awaited<ReturnType<typeof getEasyFs>>;
/** `null` 代表文件不存在 */
export type Snapshot = {
    mtime: number;
    size: number;
} | null;
export type FileChangeEvent = {
    event: "init" | "add" | "modify" | "delete";
    newSnap: Snapshot;
};
/**
 * 创建一个一次性的、有状态的文件变更监听器。
 * 它会异步地等待，直到文件的状态发生变化，然后解析并结束。
 * 它返回一个包含 promise 和 dispose 函数的对象，用于手动取消。
 *
 * @param filePath 要监听的文件路径。
 * @param currentSnap 文件的当前快照。`null` 表示文件当前不存在。
 * @param options 配置项。
 * @returns 一个包含 promise 和 dispose 方法的对象。
 */
export declare function whenFileChanged(filePath: string, currentSnap: Snapshot, options?: {
    strategy?: "stat";
    interval?: number;
    initEvent?: boolean;
}): {
    promise: Promise<FileChangeEvent>;
    dispose(): void;
};
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