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import {  assertPath,  isPosixPathSeparator,  normalizeString,} from "https://deno.land/std@0.122.0/path/_util.ts";
export const CHAR_FORWARD_SLASH = 47;
export function relative(from: string, to: string): string {  assertPath(from);  assertPath(to);  from = normalize(from);  to = normalize(to);  if (from === to) return "";  const fromFragments = from.split("/").filter(Boolean);  const toFragments = to.split("/").filter(Boolean);  while (fromFragments.length && toFragments.length) {    if (fromFragments[0] !== toFragments[0]) break;    fromFragments.shift();    toFragments.shift();  }  return [...fromFragments.map(() => ".."), ...toFragments].join("/");}
export function dirname(path: string): string {  assertPath(path);  if (path.length === 0) return ".";  const hasRoot = path.charCodeAt(0) === CHAR_FORWARD_SLASH;  let end = -1;  let matchedSlash = true;  for (let i = path.length - 1; i >= 1; --i) {    if (path.charCodeAt(i) === CHAR_FORWARD_SLASH) {      if (!matchedSlash) {        end = i;        break;      }    } else {      matchedSlash = false;    }  }  if (end === -1) return hasRoot ? "/" : ".";  if (hasRoot && end === 1) return "//";  return path.slice(0, end);}
const protocolRegex = /^\w+:\/\//;export function join(...paths: string[]): string {  if (paths.length === 0) return ".";  let joined: string | undefined;  for (let i = 0, len = paths.length; i < len; ++i) {    const path = paths[i];    assertPath(path);    if (path.length > 0) {      if (!joined) joined = path;      else joined += `/${path}`;    }  }  if (!joined) return ".";  if (protocolRegex.test(joined)) {    let protocol: string;    const normalized = normalize(      joined.replace(protocolRegex, (p) => ((protocol = p), "")),    );    return protocol! + normalized;  }  return normalize(joined);}
export function normalize(path: string): string {  assertPath(path);  if (path.length === 0) return ".";  const isAbsolute = path.charCodeAt(0) === CHAR_FORWARD_SLASH;  const trailingSeparator =    path.charCodeAt(path.length - 1) === CHAR_FORWARD_SLASH;  path = normalizeString(path, !isAbsolute, "/", isPosixPathSeparator);  if (path.length === 0 && !isAbsolute) path = ".";  if (path.length > 0 && trailingSeparator) path += "/";  if (isAbsolute) return `/${path}`;  return path;}