export type FileIdentity = {
    readonly dev: number;
    readonly ino: number;
    readonly mtimeMs: number;
    readonly size: number;
};
export type ParentSnapshot = {
    readonly path: string;
    readonly identity: FileIdentity | null;
};
export type FileSnapshot = {
    readonly path: string;
    readonly relativePath: string;
    readonly bytes: Buffer | null;
    readonly identity: FileIdentity | null;
    readonly parents: readonly ParentSnapshot[];
};
export type WrittenFile = {
    readonly snapshot: FileSnapshot;
    readonly nextBytes: Buffer;
    readonly identity: FileIdentity;
};
export declare class InitTransactionError extends Error {
    constructor(message: string);
}
export declare function safeProjectPath(projectDir: string, relativePath: string): string;
export declare function identity(path: string): FileIdentity;
export declare function sameIdentity(left: FileIdentity | null, right: FileIdentity | null): boolean;
export declare function readSnapshot(projectDir: string, relativePath: string): FileSnapshot;
export declare function sameSnapshot(expected: FileSnapshot, createdDirs?: Set<string>): boolean;
export declare function ensureParents(projectDir: string, relativePath: string, createdDirs: Set<string>): void;
export declare function removeEmptyParents(path: string, projectDir: string): void;
export declare function writeNewFile(path: string, bytes: Buffer): void;
export declare function writeTarget(snapshot: FileSnapshot, nextBytes: Buffer, projectDir: string, createdDirs: Set<string>): FileIdentity;