// Copyright 2018-2025 the Deno authors. MIT license.
// Copyright the Browserify authors. MIT License.
function assertPath(path) {
  if (typeof path !== "string") {
    throw new TypeError(`Path must be a string, received "${JSON.stringify(path)}"`);
  }
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function stripSuffix(name, suffix) {
  if (suffix.length >= name.length) {
    return name;
  }
  const lenDiff = name.length - suffix.length;
  for(let i = suffix.length - 1; i >= 0; --i){
    if (name.charCodeAt(lenDiff + i) !== suffix.charCodeAt(i)) {
      return name;
    }
  }
  return name.slice(0, -suffix.length);
}
function lastPathSegment(path, isSep, start = 0) {
  let matchedNonSeparator = false;
  let end = path.length;
  for(let i = path.length - 1; i >= start; --i){
    if (isSep(path.charCodeAt(i))) {
      if (matchedNonSeparator) {
        start = i + 1;
        break;
      }
    } else if (!matchedNonSeparator) {
      matchedNonSeparator = true;
      end = i + 1;
    }
  }
  return path.slice(start, end);
}
function assertArgs$1(path, suffix) {
  assertPath(path);
  if (path.length === 0) return path;
  if (typeof suffix !== "string") {
    throw new TypeError(`Suffix must be a string, received "${JSON.stringify(suffix)}"`);
  }
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function assertArg$3(url) {
  url = url instanceof URL ? url : new URL(url);
  if (url.protocol !== "file:") {
    throw new TypeError(`URL must be a file URL: received "${url.protocol}"`);
  }
  return url;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Converts a file URL to a path string.
 *
 * @example Usage
 * ```ts
 * import { fromFileUrl } from "@std/path/posix/from-file-url";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(fromFileUrl(new URL("file:///home/foo")), "/home/foo");
 * ```
 *
 * @param url The file URL to convert.
 * @returns The path string.
 */ function fromFileUrl(url) {
  url = assertArg$3(url);
  return decodeURIComponent(url.pathname.replace(/%(?![0-9A-Fa-f]{2})/g, "%25"));
}

// Copyright 2018-2025 the Deno authors. MIT license.
// Copyright the Browserify authors. MIT License.
// Ported from https://github.com/browserify/path-browserify/
// This module is browser compatible.
function stripTrailingSeparators(segment, isSep) {
  if (segment.length <= 1) {
    return segment;
  }
  let end = segment.length;
  for(let i = segment.length - 1; i > 0; i--){
    if (isSep(segment.charCodeAt(i))) {
      end = i;
    } else {
      break;
    }
  }
  return segment.slice(0, end);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// Copyright the Browserify authors. MIT License.
// Ported from https://github.com/browserify/path-browserify/
// This module is browser compatible.
// Alphabet chars.
// Non-alphabetic chars.
const CHAR_DOT = 46; /* . */ 
const CHAR_FORWARD_SLASH = 47; /* / */

// Copyright 2018-2025 the Deno authors. MIT license.
// Copyright the Browserify authors. MIT License.
// Ported from https://github.com/browserify/path-browserify/
// This module is browser compatible.
function isPosixPathSeparator(code) {
  return code === CHAR_FORWARD_SLASH;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Return the last portion of a `path`.
 * Trailing directory separators are ignored, and optional suffix is removed.
 *
 * @example Usage
 * ```ts
 * import { basename } from "@std/path/posix/basename";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(basename("/home/user/Documents/"), "Documents");
 * assertEquals(basename("/home/user/Documents/image.png"), "image.png");
 * assertEquals(basename("/home/user/Documents/image.png", ".png"), "image");
 * assertEquals(basename(new URL("file:///home/user/Documents/image.png")), "image.png");
 * assertEquals(basename(new URL("file:///home/user/Documents/image.png"), ".png"), "image");
 * ```
 *
 * @example Working with URLs
 *
 * Note: This function doesn't automatically strip hash and query parts from
 * URLs. If your URL contains a hash or query, remove them before passing the
 * URL to the function. This can be done by passing the URL to `new URL(url)`,
 * and setting the `hash` and `search` properties to empty strings.
 *
 * ```ts
 * import { basename } from "@std/path/posix/basename";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(basename("https://deno.land/std/path/mod.ts"), "mod.ts");
 * assertEquals(basename("https://deno.land/std/path/mod.ts", ".ts"), "mod");
 * assertEquals(basename("https://deno.land/std/path/mod.ts?a=b"), "mod.ts?a=b");
 * assertEquals(basename("https://deno.land/std/path/mod.ts#header"), "mod.ts#header");
 * ```
 *
 * @param path The path to extract the name from.
 * @param suffix The suffix to remove from extracted name.
 * @returns The extracted name.
 */ function basename(path, suffix = "") {
  if (path instanceof URL) {
    path = fromFileUrl(path);
  }
  assertArgs$1(path, suffix);
  const lastSegment = lastPathSegment(path, isPosixPathSeparator);
  const strippedSegment = stripTrailingSeparators(lastSegment, isPosixPathSeparator);
  return suffix ? stripSuffix(strippedSegment, suffix) : strippedSegment;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * The character used to separate entries in the PATH environment variable.
 */ const DELIMITER = ":";
/**
 * The character used to separate components of a file path.
 */ const SEPARATOR = "/";
/**
 * A regular expression that matches one or more path separators.
 */ const SEPARATOR_PATTERN = /\/+/;

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function assertArg$2(path) {
  assertPath(path);
  if (path.length === 0) return ".";
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Return the directory path of a `path`.
 *
 * @example Usage
 * ```ts
 * import { dirname } from "@std/path/posix/dirname";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(dirname("/home/user/Documents/"), "/home/user");
 * assertEquals(dirname("/home/user/Documents/image.png"), "/home/user/Documents");
 * assertEquals(dirname("https://deno.land/std/path/mod.ts"), "https://deno.land/std/path");
 * assertEquals(dirname(new URL("file:///home/user/Documents/image.png")), "/home/user/Documents");
 * ```
 *
 * @example Working with URLs
 *
 * ```ts
 * import { dirname } from "@std/path/posix/dirname";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(dirname("https://deno.land/std/path/mod.ts"), "https://deno.land/std/path");
 * assertEquals(dirname("https://deno.land/std/path/mod.ts?a=b"), "https://deno.land/std/path");
 * assertEquals(dirname("https://deno.land/std/path/mod.ts#header"), "https://deno.land/std/path");
 * ```
 *
 * @param path The path to get the directory from.
 * @returns The directory path.
 */ function dirname(path) {
  if (path instanceof URL) {
    path = fromFileUrl(path);
  }
  assertArg$2(path);
  let end = -1;
  let matchedNonSeparator = false;
  for(let i = path.length - 1; i >= 1; --i){
    if (isPosixPathSeparator(path.charCodeAt(i))) {
      if (matchedNonSeparator) {
        end = i;
        break;
      }
    } else {
      matchedNonSeparator = true;
    }
  }
  // No matches. Fallback based on provided path:
  //
  // - leading slashes paths
  //     "/foo" => "/"
  //     "///foo" => "/"
  // - no slash path
  //     "foo" => "."
  if (end === -1) {
    return isPosixPathSeparator(path.charCodeAt(0)) ? "/" : ".";
  }
  return stripTrailingSeparators(path.slice(0, end), isPosixPathSeparator);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Return the extension of the `path` with leading period.
 *
 * @example Usage
 * ```ts
 * import { extname } from "@std/path/posix/extname";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(extname("/home/user/Documents/file.ts"), ".ts");
 * assertEquals(extname("/home/user/Documents/"), "");
 * assertEquals(extname("/home/user/Documents/image.png"), ".png");
 * assertEquals(extname(new URL("file:///home/user/Documents/file.ts")), ".ts");
 * assertEquals(extname(new URL("file:///home/user/Documents/file.ts?a=b")), ".ts");
 * assertEquals(extname(new URL("file:///home/user/Documents/file.ts#header")), ".ts");
 * ```
 *
 * @example Working with URLs
 *
 * Note: This function doesn't automatically strip hash and query parts from
 * URLs. If your URL contains a hash or query, remove them before passing the
 * URL to the function. This can be done by passing the URL to `new URL(url)`,
 * and setting the `hash` and `search` properties to empty strings.
 *
 * ```ts
 * import { extname } from "@std/path/posix/extname";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(extname("https://deno.land/std/path/mod.ts"), ".ts");
 * assertEquals(extname("https://deno.land/std/path/mod.ts?a=b"), ".ts?a=b");
 * assertEquals(extname("https://deno.land/std/path/mod.ts#header"), ".ts#header");
 * ```
 *
 * @param path The path to get the extension from.
 * @returns The extension (ex. for `file.ts` returns `.ts`).
 */ function extname(path) {
  if (path instanceof URL) {
    path = fromFileUrl(path);
  }
  assertPath(path);
  let startDot = -1;
  let startPart = 0;
  let end = -1;
  let matchedSlash = true;
  // Track the state of characters (if any) we see before our first dot and
  // after any path separator we find
  let preDotState = 0;
  for(let i = path.length - 1; i >= 0; --i){
    const code = path.charCodeAt(i);
    if (isPosixPathSeparator(code)) {
      // If we reached a path separator that was not part of a set of path
      // separators at the end of the string, stop now
      if (!matchedSlash) {
        startPart = i + 1;
        break;
      }
      continue;
    }
    if (end === -1) {
      // We saw the first non-path separator, mark this as the end of our
      // extension
      matchedSlash = false;
      end = i + 1;
    }
    if (code === CHAR_DOT) {
      // If this is our first dot, mark it as the start of our extension
      if (startDot === -1) startDot = i;
      else if (preDotState !== 1) preDotState = 1;
    } else if (startDot !== -1) {
      // We saw a non-dot and non-path separator before our dot, so we should
      // have a good chance at having a non-empty extension
      preDotState = -1;
    }
  }
  if (startDot === -1 || end === -1 || // We saw a non-dot character immediately before the dot
  preDotState === 0 || // The (right-most) trimmed path component is exactly '..'
  preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
    return "";
  }
  return path.slice(startDot, end);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function _format(sep, pathObject) {
  const dir = pathObject.dir || pathObject.root;
  const base = pathObject.base || (pathObject.name ?? "") + (pathObject.ext ?? "");
  if (!dir) return base;
  if (base === sep) return dir;
  if (dir === pathObject.root) return dir + base;
  return dir + sep + base;
}
function assertArg$1(pathObject) {
  if (pathObject === null || typeof pathObject !== "object") {
    throw new TypeError(`The "pathObject" argument must be of type Object, received type "${typeof pathObject}"`);
  }
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Generate a path from `ParsedPath` object.
 *
 * @example Usage
 * ```ts
 * import { format } from "@std/path/posix/format";
 * import { assertEquals } from "@std/assert";
 *
 * const path = format({
 *   root: "/",
 *   dir: "/path/dir",
 *   base: "file.txt",
 *   ext: ".txt",
 *   name: "file"
 * });
 * assertEquals(path, "/path/dir/file.txt");
 * ```
 *
 * @param pathObject The path object to format.
 * @returns The formatted path.
 */ function format(pathObject) {
  assertArg$1(pathObject);
  return _format("/", pathObject);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Verifies whether provided path is absolute.
 *
 * @example Usage
 * ```ts
 * import { isAbsolute } from "@std/path/posix/is-absolute";
 * import { assert, assertFalse } from "@std/assert";
 *
 * assert(isAbsolute("/home/user/Documents/"));
 * assertFalse(isAbsolute("home/user/Documents/"));
 * ```
 *
 * @param path The path to verify.
 * @returns Whether the path is absolute.
 */ function isAbsolute(path) {
  assertPath(path);
  return path.length > 0 && isPosixPathSeparator(path.charCodeAt(0));
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function assertArg(path) {
  assertPath(path);
  if (path.length === 0) return ".";
}

// Copyright 2018-2025 the Deno authors. MIT license.
// Copyright the Browserify authors. MIT License.
// Ported from https://github.com/browserify/path-browserify/
// This module is browser compatible.
// Resolves . and .. elements in a path with directory names
function normalizeString(path, allowAboveRoot, separator, isPathSeparator) {
  let res = "";
  let lastSegmentLength = 0;
  let lastSlash = -1;
  let dots = 0;
  let code;
  for(let i = 0; i <= path.length; ++i){
    if (i < path.length) code = path.charCodeAt(i);
    else if (isPathSeparator(code)) break;
    else code = CHAR_FORWARD_SLASH;
    if (isPathSeparator(code)) {
      if (lastSlash === i - 1 || dots === 1) ; else if (lastSlash !== i - 1 && dots === 2) {
        if (res.length < 2 || lastSegmentLength !== 2 || res.charCodeAt(res.length - 1) !== CHAR_DOT || res.charCodeAt(res.length - 2) !== CHAR_DOT) {
          if (res.length > 2) {
            const lastSlashIndex = res.lastIndexOf(separator);
            if (lastSlashIndex === -1) {
              res = "";
              lastSegmentLength = 0;
            } else {
              res = res.slice(0, lastSlashIndex);
              lastSegmentLength = res.length - 1 - res.lastIndexOf(separator);
            }
            lastSlash = i;
            dots = 0;
            continue;
          } else if (res.length === 2 || res.length === 1) {
            res = "";
            lastSegmentLength = 0;
            lastSlash = i;
            dots = 0;
            continue;
          }
        }
        if (allowAboveRoot) {
          if (res.length > 0) res += `${separator}..`;
          else res = "..";
          lastSegmentLength = 2;
        }
      } else {
        if (res.length > 0) res += separator + path.slice(lastSlash + 1, i);
        else res = path.slice(lastSlash + 1, i);
        lastSegmentLength = i - lastSlash - 1;
      }
      lastSlash = i;
      dots = 0;
    } else if (code === CHAR_DOT && dots !== -1) {
      ++dots;
    } else {
      dots = -1;
    }
  }
  return res;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Normalize the `path`, resolving `'..'` and `'.'` segments.
 * Note that resolving these segments does not necessarily mean that all will be eliminated.
 * A `'..'` at the top-level will be preserved, and an empty path is canonically `'.'`.
 *
 * @example Usage
 * ```ts
 * import { normalize } from "@std/path/posix/normalize";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(normalize("/foo/bar//baz/asdf/quux/.."), "/foo/bar/baz/asdf");
 * assertEquals(normalize(new URL("file:///foo/bar//baz/asdf/quux/..")), "/foo/bar/baz/asdf/");
 * ```
 *
 * @example Working with URLs
 *
 * Note: This function will remove the double slashes from a URL's scheme.
 * Hence, do not pass a full URL to this function. Instead, pass the pathname of
 * the URL.
 *
 * ```ts
 * import { normalize } from "@std/path/posix/normalize";
 * import { assertEquals } from "@std/assert";
 *
 * const url = new URL("https://deno.land");
 * url.pathname = normalize("//std//assert//.//mod.ts");
 * assertEquals(url.href, "https://deno.land/std/assert/mod.ts");
 *
 * url.pathname = normalize("std/assert/../async/retry.ts");
 * assertEquals(url.href, "https://deno.land/std/async/retry.ts");
 * ```
 *
 * @param path The path to normalize.
 * @returns The normalized path.
 */ function normalize(path) {
  if (path instanceof URL) {
    path = fromFileUrl(path);
  }
  assertArg(path);
  const isAbsolute = isPosixPathSeparator(path.charCodeAt(0));
  const trailingSeparator = isPosixPathSeparator(path.charCodeAt(path.length - 1));
  // Normalize the path
  path = normalizeString(path, !isAbsolute, "/", isPosixPathSeparator);
  if (path.length === 0 && !isAbsolute) path = ".";
  if (path.length > 0 && trailingSeparator) path += "/";
  if (isAbsolute) return `/${path}`;
  return path;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Join all given a sequence of `paths`,then normalizes the resulting path.
 *
 * @example Usage
 * ```ts
 * import { join } from "@std/path/posix/join";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(join("/foo", "bar", "baz/asdf", "quux", ".."), "/foo/bar/baz/asdf");
 * assertEquals(join(new URL("file:///foo"), "bar", "baz/asdf", "quux", ".."), "/foo/bar/baz/asdf");
 * ```
 *
 * @example Working with URLs
 * ```ts
 * import { join } from "@std/path/posix/join";
 * import { assertEquals } from "@std/assert";
 *
 * const url = new URL("https://deno.land");
 * url.pathname = join("std", "path", "mod.ts");
 * assertEquals(url.href, "https://deno.land/std/path/mod.ts");
 *
 * url.pathname = join("//std", "path/", "/mod.ts");
 * assertEquals(url.href, "https://deno.land/std/path/mod.ts");
 * ```
 *
 * @param path The path to join. This can be string or file URL.
 * @param paths The paths to join.
 * @returns The joined path.
 */ function join(path, ...paths) {
  if (path === undefined) return ".";
  if (path instanceof URL) {
    path = fromFileUrl(path);
  }
  paths = path ? [
    path,
    ...paths
  ] : paths;
  paths.forEach((path)=>assertPath(path));
  const joined = paths.filter((path)=>path.length > 0).join("/");
  return joined === "" ? "." : normalize(joined);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Return a `ParsedPath` object of the `path`.
 *
 * @example Usage
 * ```ts
 * import { parse } from "@std/path/posix/parse";
 * import { assertEquals } from "@std/assert";
 *
 * const path = parse("/home/user/file.txt");
 * assertEquals(path, {
 *   root: "/",
 *   dir: "/home/user",
 *   base: "file.txt",
 *   ext: ".txt",
 *   name: "file"
 * });
 * ```
 *
 * @param path The path to parse.
 * @returns The parsed path object.
 */ function parse(path) {
  assertPath(path);
  const ret = {
    root: "",
    dir: "",
    base: "",
    ext: "",
    name: ""
  };
  if (path.length === 0) return ret;
  const isAbsolute = isPosixPathSeparator(path.charCodeAt(0));
  let start;
  if (isAbsolute) {
    ret.root = "/";
    start = 1;
  } else {
    start = 0;
  }
  let startDot = -1;
  let startPart = 0;
  let end = -1;
  let matchedSlash = true;
  let i = path.length - 1;
  // Track the state of characters (if any) we see before our first dot and
  // after any path separator we find
  let preDotState = 0;
  // Get non-dir info
  for(; i >= start; --i){
    const code = path.charCodeAt(i);
    if (isPosixPathSeparator(code)) {
      // If we reached a path separator that was not part of a set of path
      // separators at the end of the string, stop now
      if (!matchedSlash) {
        startPart = i + 1;
        break;
      }
      continue;
    }
    if (end === -1) {
      // We saw the first non-path separator, mark this as the end of our
      // extension
      matchedSlash = false;
      end = i + 1;
    }
    if (code === CHAR_DOT) {
      // If this is our first dot, mark it as the start of our extension
      if (startDot === -1) startDot = i;
      else if (preDotState !== 1) preDotState = 1;
    } else if (startDot !== -1) {
      // We saw a non-dot and non-path separator before our dot, so we should
      // have a good chance at having a non-empty extension
      preDotState = -1;
    }
  }
  if (startDot === -1 || end === -1 || // We saw a non-dot character immediately before the dot
  preDotState === 0 || // The (right-most) trimmed path component is exactly '..'
  preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {
    if (end !== -1) {
      if (startPart === 0 && isAbsolute) {
        ret.base = ret.name = path.slice(1, end);
      } else {
        ret.base = ret.name = path.slice(startPart, end);
      }
    }
    // Fallback to '/' in case there is no basename
    ret.base = ret.base || "/";
  } else {
    if (startPart === 0 && isAbsolute) {
      ret.name = path.slice(1, startDot);
      ret.base = path.slice(1, end);
    } else {
      ret.name = path.slice(startPart, startDot);
      ret.base = path.slice(startPart, end);
    }
    ret.ext = path.slice(startDot, end);
  }
  if (startPart > 0) {
    ret.dir = stripTrailingSeparators(path.slice(0, startPart - 1), isPosixPathSeparator);
  } else if (isAbsolute) ret.dir = "/";
  return ret;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Resolves path segments into a `path`.
 *
 * @example Usage
 * ```ts
 * import { resolve } from "@std/path/posix/resolve";
 * import { assertEquals } from "@std/assert";
 *
 * const path = resolve("/foo", "bar", "baz/asdf", "quux", "..");
 * assertEquals(path, "/foo/bar/baz/asdf");
 * ```
 *
 * @param pathSegments The path segments to resolve.
 * @returns The resolved path.
 */ function resolve(...pathSegments) {
  let resolvedPath = "";
  let resolvedAbsolute = false;
  for(let i = pathSegments.length - 1; i >= -1 && !resolvedAbsolute; i--){
    let path;
    if (i >= 0) path = pathSegments[i];
    else {
      // deno-lint-ignore no-explicit-any
      const { Deno } = globalThis;
      if (typeof Deno?.cwd !== "function") {
        throw new TypeError("Resolved a relative path without a current working directory (CWD)");
      }
      path = Deno.cwd();
    }
    assertPath(path);
    // Skip empty entries
    if (path.length === 0) {
      continue;
    }
    resolvedPath = `${path}/${resolvedPath}`;
    resolvedAbsolute = isPosixPathSeparator(path.charCodeAt(0));
  }
  // At this point the path should be resolved to a full absolute path, but
  // handle relative paths to be safe (might happen when Deno.cwd() fails)
  // Normalize the path
  resolvedPath = normalizeString(resolvedPath, !resolvedAbsolute, "/", isPosixPathSeparator);
  if (resolvedAbsolute) {
    if (resolvedPath.length > 0) return `/${resolvedPath}`;
    else return "/";
  } else if (resolvedPath.length > 0) return resolvedPath;
  else return ".";
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function assertArgs(from, to) {
  assertPath(from);
  assertPath(to);
  if (from === to) return "";
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Return the relative path from `from` to `to` based on current working directory.
 *
 * If `from` and `to` are the same, return an empty string.
 *
 * @example Usage
 * ```ts
 * import { relative } from "@std/path/posix/relative";
 * import { assertEquals } from "@std/assert";
 *
 * const path = relative("/data/orandea/test/aaa", "/data/orandea/impl/bbb");
 * assertEquals(path, "../../impl/bbb");
 * ```
 *
 * @param from The path to start from.
 * @param to The path to reach.
 * @returns The relative path.
 */ function relative(from, to) {
  assertArgs(from, to);
  from = resolve(from);
  to = resolve(to);
  if (from === to) return "";
  // Trim any leading backslashes
  let fromStart = 1;
  const fromEnd = from.length;
  for(; fromStart < fromEnd; ++fromStart){
    if (!isPosixPathSeparator(from.charCodeAt(fromStart))) break;
  }
  const fromLen = fromEnd - fromStart;
  // Trim any leading backslashes
  let toStart = 1;
  const toEnd = to.length;
  for(; toStart < toEnd; ++toStart){
    if (!isPosixPathSeparator(to.charCodeAt(toStart))) break;
  }
  const toLen = toEnd - toStart;
  // Compare paths to find the longest common path from root
  const length = fromLen < toLen ? fromLen : toLen;
  let lastCommonSep = -1;
  let i = 0;
  for(; i <= length; ++i){
    if (i === length) {
      if (toLen > length) {
        if (isPosixPathSeparator(to.charCodeAt(toStart + i))) {
          // We get here if `from` is the exact base path for `to`.
          // For example: from='/foo/bar'; to='/foo/bar/baz'
          return to.slice(toStart + i + 1);
        } else if (i === 0) {
          // We get here if `from` is the root
          // For example: from='/'; to='/foo'
          return to.slice(toStart + i);
        }
      } else if (fromLen > length) {
        if (isPosixPathSeparator(from.charCodeAt(fromStart + i))) {
          // We get here if `to` is the exact base path for `from`.
          // For example: from='/foo/bar/baz'; to='/foo/bar'
          lastCommonSep = i;
        } else if (i === 0) {
          // We get here if `to` is the root.
          // For example: from='/foo'; to='/'
          lastCommonSep = 0;
        }
      }
      break;
    }
    const fromCode = from.charCodeAt(fromStart + i);
    const toCode = to.charCodeAt(toStart + i);
    if (fromCode !== toCode) break;
    else if (isPosixPathSeparator(fromCode)) lastCommonSep = i;
  }
  let out = "";
  // Generate the relative path based on the path difference between `to`
  // and `from`
  for(i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i){
    if (i === fromEnd || isPosixPathSeparator(from.charCodeAt(i))) {
      if (out.length === 0) out += "..";
      else out += "/..";
    }
  }
  // Lastly, append the rest of the destination (`to`) path that comes after
  // the common path parts
  if (out.length > 0) return out + to.slice(toStart + lastCommonSep);
  else {
    toStart += lastCommonSep;
    if (isPosixPathSeparator(to.charCodeAt(toStart))) ++toStart;
    return to.slice(toStart);
  }
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
const WHITESPACE_ENCODINGS = {
  "\u0009": "%09",
  "\u000A": "%0A",
  "\u000B": "%0B",
  "\u000C": "%0C",
  "\u000D": "%0D",
  "\u0020": "%20"
};
function encodeWhitespace(string) {
  return string.replaceAll(/[\s]/g, (c)=>{
    return WHITESPACE_ENCODINGS[c] ?? c;
  });
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Converts a path string to a file URL.
 *
 * @example Usage
 * ```ts
 * import { toFileUrl } from "@std/path/posix/to-file-url";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(toFileUrl("/home/foo"), new URL("file:///home/foo"));
 * assertEquals(toFileUrl("/home/foo bar"), new URL("file:///home/foo%20bar"));
 * ```
 *
 * @param path The path to convert.
 * @returns The file URL.
 */ function toFileUrl(path) {
  if (!isAbsolute(path)) {
    throw new TypeError(`Path must be absolute: received "${path}"`);
  }
  const url = new URL("file:///");
  url.pathname = encodeWhitespace(path.replace(/%/g, "%25").replace(/\\/g, "%5C"));
  return url;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Converts a path to a namespaced path. This function returns the path as is on posix.
 *
 * @example Usage
 * ```ts
 * import { toNamespacedPath } from "@std/path/posix/to-namespaced-path";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(toNamespacedPath("/home/foo"), "/home/foo");
 * ```
 *
 * @param path The path.
 * @returns The namespaced path.
 */ function toNamespacedPath(path) {
  // Non-op on posix systems
  return path;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
function common$1(paths, sep) {
  const [first = "", ...remaining] = paths;
  const parts = first.split(sep);
  let endOfPrefix = parts.length;
  let append = "";
  for (const path of remaining){
    const compare = path.split(sep);
    if (compare.length <= endOfPrefix) {
      endOfPrefix = compare.length;
      append = "";
    }
    for(let i = 0; i < endOfPrefix; i++){
      if (compare[i] !== parts[i]) {
        endOfPrefix = i;
        append = i === 0 ? "" : sep;
        break;
      }
    }
  }
  return parts.slice(0, endOfPrefix).join(sep) + append;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/** Determines the common path from a set of paths for POSIX systems.
 *
 * @example Usage
 * ```ts
 * import { common } from "@std/path/posix/common";
 * import { assertEquals } from "@std/assert";
 *
 * const path = common([
 *   "./deno/std/path/mod.ts",
 *   "./deno/std/fs/mod.ts",
 * ]);
 * assertEquals(path, "./deno/std/");
 * ```
 *
 * @param paths The paths to compare.
 * @returns The common path.
 */ function common(paths) {
  return common$1(paths, SEPARATOR);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Options for {@linkcode globToRegExp}, {@linkcode joinGlobs},
 * {@linkcode normalizeGlob} and {@linkcode expandGlob}.
 */ const REG_EXP_ESCAPE_CHARS = [
  "!",
  "$",
  "(",
  ")",
  "*",
  "+",
  ".",
  "=",
  "?",
  "[",
  "\\",
  "^",
  "{",
  "|"
];
const RANGE_ESCAPE_CHARS = [
  "-",
  "\\",
  "]"
];
function _globToRegExp(c, glob, { extended = true, globstar: globstarOption = true, // os = osType,
caseInsensitive = false } = {}) {
  if (glob === "") {
    return /(?!)/;
  }
  // Remove trailing separators.
  let newLength = glob.length;
  for(; newLength > 1 && c.seps.includes(glob[newLength - 1]); newLength--);
  glob = glob.slice(0, newLength);
  let regExpString = "";
  // Terminates correctly. Trust that `j` is incremented every iteration.
  for(let j = 0; j < glob.length;){
    let segment = "";
    const groupStack = [];
    let inRange = false;
    let inEscape = false;
    let endsWithSep = false;
    let i = j;
    // Terminates with `i` at the non-inclusive end of the current segment.
    for(; i < glob.length && !c.seps.includes(glob[i]); i++){
      if (inEscape) {
        inEscape = false;
        const escapeChars = inRange ? RANGE_ESCAPE_CHARS : REG_EXP_ESCAPE_CHARS;
        segment += escapeChars.includes(glob[i]) ? `\\${glob[i]}` : glob[i];
        continue;
      }
      if (glob[i] === c.escapePrefix) {
        inEscape = true;
        continue;
      }
      if (glob[i] === "[") {
        if (!inRange) {
          inRange = true;
          segment += "[";
          if (glob[i + 1] === "!") {
            i++;
            segment += "^";
          } else if (glob[i + 1] === "^") {
            i++;
            segment += "\\^";
          }
          continue;
        } else if (glob[i + 1] === ":") {
          let k = i + 1;
          let value = "";
          while(glob[k + 1] !== undefined && glob[k + 1] !== ":"){
            value += glob[k + 1];
            k++;
          }
          if (glob[k + 1] === ":" && glob[k + 2] === "]") {
            i = k + 2;
            if (value === "alnum") segment += "\\dA-Za-z";
            else if (value === "alpha") segment += "A-Za-z";
            else if (value === "ascii") segment += "\x00-\x7F";
            else if (value === "blank") segment += "\t ";
            else if (value === "cntrl") segment += "\x00-\x1F\x7F";
            else if (value === "digit") segment += "\\d";
            else if (value === "graph") segment += "\x21-\x7E";
            else if (value === "lower") segment += "a-z";
            else if (value === "print") segment += "\x20-\x7E";
            else if (value === "punct") {
              segment += "!\"#$%&'()*+,\\-./:;<=>?@[\\\\\\]^_‘{|}~";
            } else if (value === "space") segment += "\\s\v";
            else if (value === "upper") segment += "A-Z";
            else if (value === "word") segment += "\\w";
            else if (value === "xdigit") segment += "\\dA-Fa-f";
            continue;
          }
        }
      }
      if (glob[i] === "]" && inRange) {
        inRange = false;
        segment += "]";
        continue;
      }
      if (inRange) {
        segment += glob[i];
        continue;
      }
      if (glob[i] === ")" && groupStack.length > 0 && groupStack[groupStack.length - 1] !== "BRACE") {
        segment += ")";
        const type = groupStack.pop();
        if (type === "!") {
          segment += c.wildcard;
        } else if (type !== "@") {
          segment += type;
        }
        continue;
      }
      if (glob[i] === "|" && groupStack.length > 0 && groupStack[groupStack.length - 1] !== "BRACE") {
        segment += "|";
        continue;
      }
      if (glob[i] === "+" && extended && glob[i + 1] === "(") {
        i++;
        groupStack.push("+");
        segment += "(?:";
        continue;
      }
      if (glob[i] === "@" && extended && glob[i + 1] === "(") {
        i++;
        groupStack.push("@");
        segment += "(?:";
        continue;
      }
      if (glob[i] === "?") {
        if (extended && glob[i + 1] === "(") {
          i++;
          groupStack.push("?");
          segment += "(?:";
        } else {
          segment += ".";
        }
        continue;
      }
      if (glob[i] === "!" && extended && glob[i + 1] === "(") {
        i++;
        groupStack.push("!");
        segment += "(?!";
        continue;
      }
      if (glob[i] === "{") {
        groupStack.push("BRACE");
        segment += "(?:";
        continue;
      }
      if (glob[i] === "}" && groupStack[groupStack.length - 1] === "BRACE") {
        groupStack.pop();
        segment += ")";
        continue;
      }
      if (glob[i] === "," && groupStack[groupStack.length - 1] === "BRACE") {
        segment += "|";
        continue;
      }
      if (glob[i] === "*") {
        if (extended && glob[i + 1] === "(") {
          i++;
          groupStack.push("*");
          segment += "(?:";
        } else {
          const prevChar = glob[i - 1];
          let numStars = 1;
          while(glob[i + 1] === "*"){
            i++;
            numStars++;
          }
          const nextChar = glob[i + 1];
          if (globstarOption && numStars === 2 && [
            ...c.seps,
            undefined
          ].includes(prevChar) && [
            ...c.seps,
            undefined
          ].includes(nextChar)) {
            segment += c.globstar;
            endsWithSep = true;
          } else {
            segment += c.wildcard;
          }
        }
        continue;
      }
      segment += REG_EXP_ESCAPE_CHARS.includes(glob[i]) ? `\\${glob[i]}` : glob[i];
    }
    // Check for unclosed groups or a dangling backslash.
    if (groupStack.length > 0 || inRange || inEscape) {
      // Parse failure. Take all characters from this segment literally.
      segment = "";
      for (const c of glob.slice(j, i)){
        segment += REG_EXP_ESCAPE_CHARS.includes(c) ? `\\${c}` : c;
        endsWithSep = false;
      }
    }
    regExpString += segment;
    if (!endsWithSep) {
      regExpString += i < glob.length ? c.sep : c.sepMaybe;
      endsWithSep = true;
    }
    // Terminates with `i` at the start of the next segment.
    while(c.seps.includes(glob[i]))i++;
    j = i;
  }
  regExpString = `^${regExpString}$`;
  return new RegExp(regExpString, caseInsensitive ? "i" : "");
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
const constants = {
  sep: "/+",
  sepMaybe: "/*",
  seps: [
    "/"
  ],
  globstar: "(?:[^/]*(?:/|$)+)*",
  wildcard: "[^/]*",
  escapePrefix: "\\"
};
/** Convert a glob string to a regular expression.
 *
 * Tries to match bash glob expansion as closely as possible.
 *
 * Basic glob syntax:
 * - `*` - Matches everything without leaving the path segment.
 * - `?` - Matches any single character.
 * - `{foo,bar}` - Matches `foo` or `bar`.
 * - `[abcd]` - Matches `a`, `b`, `c` or `d`.
 * - `[a-d]` - Matches `a`, `b`, `c` or `d`.
 * - `[!abcd]` - Matches any single character besides `a`, `b`, `c` or `d`.
 * - `[[:<class>:]]` - Matches any character belonging to `<class>`.
 *     - `[[:alnum:]]` - Matches any digit or letter.
 *     - `[[:digit:]abc]` - Matches any digit, `a`, `b` or `c`.
 *     - See https://facelessuser.github.io/wcmatch/glob/#posix-character-classes
 *       for a complete list of supported character classes.
 * - `\` - Escapes the next character for an `os` other than `"windows"`.
 * - \` - Escapes the next character for `os` set to `"windows"`.
 * - `/` - Path separator.
 * - `\` - Additional path separator only for `os` set to `"windows"`.
 *
 * Extended syntax:
 * - Requires `{ extended: true }`.
 * - `?(foo|bar)` - Matches 0 or 1 instance of `{foo,bar}`.
 * - `@(foo|bar)` - Matches 1 instance of `{foo,bar}`. They behave the same.
 * - `*(foo|bar)` - Matches _n_ instances of `{foo,bar}`.
 * - `+(foo|bar)` - Matches _n > 0_ instances of `{foo,bar}`.
 * - `!(foo|bar)` - Matches anything other than `{foo,bar}`.
 * - See https://www.linuxjournal.com/content/bash-extended-globbing.
 *
 * Globstar syntax:
 * - Requires `{ globstar: true }`.
 * - `**` - Matches any number of any path segments.
 *     - Must comprise its entire path segment in the provided glob.
 * - See https://www.linuxjournal.com/content/globstar-new-bash-globbing-option.
 *
 * Note the following properties:
 * - The generated `RegExp` is anchored at both start and end.
 * - Repeating and trailing separators are tolerated. Trailing separators in the
 *   provided glob have no meaning and are discarded.
 * - Absolute globs will only match absolute paths, etc.
 * - Empty globs will match nothing.
 * - Any special glob syntax must be contained to one path segment. For example,
 *   `?(foo|bar/baz)` is invalid. The separator will take precedence and the
 *   first segment ends with an unclosed group.
 * - If a path segment ends with unclosed groups or a dangling escape prefix, a
 *   parse error has occurred. Every character for that segment is taken
 *   literally in this event.
 *
 * Limitations:
 * - A negative group like `!(foo|bar)` will wrongly be converted to a negative
 *   look-ahead followed by a wildcard. This means that `!(foo).js` will wrongly
 *   fail to match `foobar.js`, even though `foobar` is not `foo`. Effectively,
 *   `!(foo|bar)` is treated like `!(@(foo|bar)*)`. This will work correctly if
 *   the group occurs not nested at the end of the segment.
 *
 * @example Usage
 * ```ts
 * import { globToRegExp } from "@std/path/posix/glob-to-regexp";
 * import { assertEquals } from "@std/assert";
 *
 * assertEquals(globToRegExp("*.js"), /^[^/]*\.js\/*$/);
 * ```
 *
 * @param glob Glob string to convert.
 * @param options Conversion options.
 * @returns The regular expression equivalent to the glob.
 */ function globToRegExp(glob, options = {}) {
  return _globToRegExp(constants, glob, options);
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Test whether the given string is a glob.
 *
 * @example Usage
 * ```ts
 * import { isGlob } from "@std/path/is-glob";
 * import { assert } from "@std/assert";
 *
 * assert(!isGlob("foo/bar/../baz"));
 * assert(isGlob("foo/*ar/../baz"));
 * ```
 *
 * @param str String to test.
 * @returns `true` if the given string is a glob, otherwise `false`
 */ function isGlob(str) {
  const chars = {
    "{": "}",
    "(": ")",
    "[": "]"
  };
  const regex = /\\(.)|(^!|\*|\?|[\].+)]\?|\[[^\\\]]+\]|\{[^\\}]+\}|\(\?[:!=][^\\)]+\)|\([^|]+\|[^\\)]+\))/;
  if (str === "") {
    return false;
  }
  let match;
  while(match = regex.exec(str)){
    if (match[2]) return true;
    let idx = match.index + match[0].length;
    // if an open bracket/brace/paren is escaped,
    // set the index to the next closing character
    const open = match[1];
    const close = open ? chars[open] : null;
    if (open && close) {
      const n = str.indexOf(close, idx);
      if (n !== -1) {
        idx = n + 1;
      }
    }
    str = str.slice(idx);
  }
  return false;
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Like normalize(), but doesn't collapse "**\/.." when `globstar` is true.
 *
 * @example Usage
 * ```ts
 * import { normalizeGlob } from "@std/path/posix/normalize-glob";
 * import { assertEquals } from "@std/assert";
 *
 * const path = normalizeGlob("foo/bar/../*", { globstar: true });
 * assertEquals(path, "foo/*");
 * ```
 *
 * @param glob The glob to normalize.
 * @param options The options to use.
 * @returns The normalized path.
 */ function normalizeGlob(glob, options = {}) {
  const { globstar = false } = options;
  if (glob.match(/\0/g)) {
    throw new Error(`Glob contains invalid characters: "${glob}"`);
  }
  if (!globstar) {
    return normalize(glob);
  }
  const s = SEPARATOR_PATTERN.source;
  const badParentPattern = new RegExp(`(?<=(${s}|^)\\*\\*${s})\\.\\.(?=${s}|$)`, "g");
  return normalize(glob.replace(badParentPattern, "\0")).replace(/\0/g, "..");
}

// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
/**
 * Like join(), but doesn't collapse "**\/.." when `globstar` is true.
 *
 * @example Usage
 * ```ts
 * import { joinGlobs } from "@std/path/posix/join-globs";
 * import { assertEquals } from "@std/assert";
 *
 * const path = joinGlobs(["foo", "bar", "**"], { globstar: true });
 * assertEquals(path, "foo/bar/**");
 * ```
 *
 * @param globs The globs to join.
 * @param options The options to use.
 * @returns The joined path.
 */ function joinGlobs(globs, options = {}) {
  const { globstar = false } = options;
  if (!globstar || globs.length === 0) {
    return join(...globs);
  }
  let joined;
  for (const glob of globs){
    const path = glob;
    if (path.length > 0) {
      if (!joined) joined = path;
      else joined += `${SEPARATOR}${path}`;
    }
  }
  if (!joined) return ".";
  return normalizeGlob(joined, {
    globstar
  });
}

export { DELIMITER, SEPARATOR, SEPARATOR_PATTERN, basename, common, dirname, extname, format, fromFileUrl, globToRegExp, isAbsolute, isGlob, join, joinGlobs, normalize, normalizeGlob, parse, relative, resolve, toFileUrl, toNamespacedPath };
