export declare function assertSafeRelativePath(relativePath: string, allowInstallerState?: boolean): void;
export interface RootIdentity {
    readonly canonicalPath: string;
    readonly dev: string;
    readonly ino: string;
}
export interface PathIdentity {
    readonly dev: string;
    readonly ino: string;
    readonly kind: 'file' | 'directory';
}
export interface StableFileBytes {
    readonly bytes: Buffer;
    readonly identity: PathIdentity;
}
export declare class NodeFileSystem {
    exists(absolutePath: string): Promise<boolean>;
    readText(absolutePath: string): Promise<string>;
    readBytes(absolutePath: string): Promise<Buffer>;
    readStableBytes(absolutePath: string, betweenObservations?: () => void | Promise<void>): Promise<StableFileBytes>;
    readNames(absolutePath: string): Promise<string[]>;
    ensureDirectory(absolutePath: string): Promise<void>;
    createDirectoryExclusive(absolutePath: string): Promise<boolean>;
    rootIdentity(root: string): Promise<RootIdentity>;
    pathIdentity(absolutePath: string): Promise<PathIdentity | null>;
    writeTextCreate(absolutePath: string, content: string): Promise<void>;
    writeBytesCreate(absolutePath: string, content: Uint8Array): Promise<void>;
    appendTextDurable(absolutePath: string, content: string): Promise<void>;
    writeTextAtomic(absolutePath: string, content: string, fault?: (phase: 'after-temp-sync' | 'before-rename' | 'after-rename') => void | Promise<void>): Promise<void>;
    removeFile(absolutePath: string): Promise<void>;
    removeTree(absolutePath: string): Promise<void>;
    removeEmptyDirectory(absolutePath: string): Promise<boolean>;
    assertNoSymlinkOrCaseCollision(root: string, relativePath: string, allowInstallerState?: boolean): Promise<void>;
}
export declare function pruneEmptyParents(root: string, absoluteFile: string, filesystem: NodeFileSystem): Promise<void>;
export declare function treeHash(root: string, options?: {
    readonly includeInstallerState?: boolean;
}): Promise<string>;