/** Serialized file-list fields shared by an NFT and each additional root. */
export interface NftFileList {
    /**
     * File paths relative to the directory containing the `.nft.json` file, or
     * the current root when inside `NftAdditionalRoot`.
     *
     * When using webpack, these paths may exist outside the tracing root. The
     * [`@vercel/next` package][@vercel/next] ignores these paths.
     *
     * When using Turbopack, these paths are guaranteed to exist within the
     * `turbopack.root` specified or inferred from `next.config.js`.
     *
     * [@vercel/next]: https://github.com/vercel/vercel/blob/%40vercel/next%404.20.5/packages/next/src/server-build.ts#L1022-L1026
     */
    files: string[];
    /**
     * Turbopack extension: A parallel array to `files` with the same indices and
     * length containing file content hashes. For symlinks, this stores the hash
     * of the target path.
     */
    fileHashes?: string[];
    /**
     * Turbopack extension: Explicit symlink mapping information.
     *
     * When present, files not listed in `symlinks` are not symlinks. An empty
     * array means there are no symlinks. When omitted, the NFT consumer must call
     * `readlink` on every file to identify symlinks and their targets. Entries
     * are sorted by file index.
     *
     * This field is always included when `NftJson` includes `additionalRoots`,
     * and on every `NftAdditionalRoot`.
     */
    symlinks?: NftSymlink[];
}
/** Serialized contents of a `.nft.json` trace file. */
export interface NftJson extends NftFileList {
    version: 1;
    /**
     * Turbopack extension: A hash of the entrypoint that refers to these traced
     * files. This hash depends only on the entrypoint's contents, not on its
     * traced dependencies.
     */
    entryHash?: string;
    /**
     * Turbopack extension: Paths stored with different base paths, typically
     * outside the tracing root.
     */
    additionalRoots?: NftAdditionalRoot[];
}
/** Turbopack extension: Paths stored with a different base path. */
export interface NftAdditionalRoot extends NftFileList {
    /**
     * Stable unique identifier provided in `next.config.js`. This can be used to
     * generate the output path where these files are copied, such as
     * `next_additional_roots/${name}`.
     *
     * This uses a character set that is valid on most filesystems, and identifiers
     * are guaranteed not to overlap on case-insensitive filesystems.
     */
    name: string;
    /**
     * Source root that the paths in `files` are relative to, represented relative
     * to the directory containing the `.nft.json` file.
     */
    path: string;
    /** Always specified on `NftAdditionalRoot`. */
    symlinks: NftSymlink[];
}
/**
 * Turbopack extension: Information about a symlink, including which additional
 * root it maps to. Symlinks that do not cross root boundaries (the common case)
 * omit the index into `additionalRoots`.
 *
 * Transforming raw symlink targets into root-relative paths can be complicated;
 * including this information ensures that the NFT consumer gets the same result
 * expected by Turbopack's tracing system.
 *
 * Because the link target type is unspecified, on Windows the consumer must call
 * `stat` to determine whether a link target is a directory or file.
 */
export type NftSymlink = [
    /** Index in `files` that refers to a symlink. */
    number,
    /**
     * Link target path. In `NftJson`, this is relative to the directory
     * containing the `.nft.json` file. In `NftAdditionalRoot`, this is
     * relative to the current root.
     */
    string
] | [
    /** Index in `files` that refers to a symlink. */
    number,
    /** Link target path relative to the specified root. */
    string,
    /**
     * Index into `additionalRoots`, or `-1` when the target path is relative
     * to the `.nft.json` file's directory.
     *
     * This element is omitted when the target is relative to the same root as
     * the symlink itself.
     */
    number
];
export interface MappedNftFileEntry {
    source: string;
    destination: string;
    hash?: string;
    /**
     * If the `NftJson` has a top-level `symlink` field, it can be assumed that an
     * `undefined` value here means that the file is not a symlink.
     */
    symlinkTarget?: string;
    /** Whether the symlink target is stored relative to a different NFT root. */
    symlinkCrossesRoot: boolean;
}
export declare function mapNftFileEntries(nft: NftJson, traceFilePath: string, baseRoot: string, options?: {
    skipBaseRootEscapes?: boolean;
    onBaseRootEscape?: (source: string) => void;
}): MappedNftFileEntry[];
export declare function resolveNftOutputPath(outputRoot: string, destination: string): string;