@types/node/path.d.ts

declare module "path" {
    /**
     * A parsed path object generated by path.parse() or consumed by path.format().
     */
    interface ParsedPath {
        /**
         * The root of the path such as '/' or 'c:\'
         */
        root: string;
        /**
         * The full directory path such as '/home/user/dir' or 'c:\path\dir'
         */
        dir: string;
        /**
         * The file name including extension (if any) such as 'index.html'
         */
        base: string;
        /**
         * The file extension (if any) such as '.html'
         */
        ext: string;
        /**
         * The file name without extension (if any) such as 'index'
         */
        name: string;
    }
    interface FormatInputPathObject {
        /**
         * The root of the path such as '/' or 'c:\'
         */
        root?: string;
        /**
         * The full directory path such as '/home/user/dir' or 'c:\path\dir'
         */
        dir?: string;
        /**
         * The file name including extension (if any) such as 'index.html'
         */
        base?: string;
        /**
         * The file extension (if any) such as '.html'
         */
        ext?: string;
        /**
         * The file name without extension (if any) such as 'index'
         */
        name?: string;
    }

    /**
     * Normalize a string path, reducing '..' and '.' parts.
     * When multiple slashes are found, they're replaced by a single one; when the path contains a trailing slash, it is preserved. On Windows backslashes are used.
     *
     * @param p string path to normalize.
     */
    function normalize(p: string): string;
    /**
     * Join all arguments together and normalize the resulting path.
     * Arguments must be strings. In v0.8, non-string arguments were silently ignored. In v0.10 and up, an exception is thrown.
     *
     * @param paths paths to join.
     */
    function join(...paths: string[]): string;
    /**
     * The right-most parameter is considered {to}.  Other parameters are considered an array of {from}.
     *
     * Starting from leftmost {from} parameter, resolves {to} to an absolute path.
     *
     * If {to} isn't already absolute, {from} arguments are prepended in right to left order,
     * until an absolute path is found. If after using all {from} paths still no absolute path is found,
     * the current working directory is used as well. The resulting path is normalized,
     * and trailing slashes are removed unless the path gets resolved to the root directory.
     *
     * @param pathSegments string paths to join.  Non-string arguments are ignored.
     */
    function resolve(...pathSegments: string[]): string;
    /**
     * Determines whether {path} is an absolute path. An absolute path will always resolve to the same location, regardless of the working directory.
     *
     * @param path path to test.
     */
    function isAbsolute(path: string): boolean;
    /**
     * Solve the relative path from {from} to {to}.
     * At times we have two absolute paths, and we need to derive the relative path from one to the other. This is actually the reverse transform of path.resolve.
     */
    function relative(from: string, to: string): string;
    /**
     * Return the directory name of a path. Similar to the Unix dirname command.
     *
     * @param p the path to evaluate.
     */
    function dirname(p: string): string;
    /**
     * Return the last portion of a path. Similar to the Unix basename command.
     * Often used to extract the file name from a fully qualified path.
     *
     * @param p the path to evaluate.
     * @param ext optionally, an extension to remove from the result.
     */
    function basename(p: string, ext?: string): string;
    /**
     * Return the extension of the path, from the last '.' to end of string in the last portion of the path.
     * If there is no '.' in the last portion of the path or the first character of it is '.', then it returns an empty string
     *
     * @param p the path to evaluate.
     */
    function extname(p: string): string;
    /**
     * The platform-specific file separator. '\\' or '/'.
     */
    const sep: '\\' | '/';
    /**
     * The platform-specific file delimiter. ';' or ':'.
     */
    const delimiter: ';' | ':';
    /**
     * Returns an object from a path string - the opposite of format().
     *
     * @param pathString path to evaluate.
     */
    function parse(pathString: string): ParsedPath;
    /**
     * Returns a path string from an object - the opposite of parse().
     *
     * @param pathString path to evaluate.
     */
    function format(pathObject: FormatInputPathObject): string;

    namespace posix {
        function normalize(p: string): string;
        function join(...paths: string[]): string;
        function resolve(...pathSegments: string[]): string;
        function isAbsolute(p: string): boolean;
        function relative(from: string, to: string): string;
        function dirname(p: string): string;
        function basename(p: string, ext?: string): string;
        function extname(p: string): string;
        const sep: string;
        const delimiter: string;
        function parse(p: string): ParsedPath;
        function format(pP: FormatInputPathObject): string;
    }

    namespace win32 {
        function normalize(p: string): string;
        function join(...paths: string[]): string;
        function resolve(...pathSegments: string[]): string;
        function isAbsolute(p: string): boolean;
        function relative(from: string, to: string): string;
        function dirname(p: string): string;
        function basename(p: string, ext?: string): string;
        function extname(p: string): string;
        const sep: string;
        const delimiter: string;
        function parse(p: string): ParsedPath;
        function format(pP: FormatInputPathObject): string;
    }
}