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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import * as path from "../path/mod.ts";import { ensureDir, ensureDirSync } from "./ensure_dir.ts";import { getFileInfoType, toPathString } from "./_util.ts";import { isWindows } from "../_util/os.ts";
function resolveSymlinkTarget(target: string | URL, linkName: string | URL) {  if (typeof target != "string") return target; // URL is always absolute path  if (typeof linkName == "string") {    return path.resolve(path.dirname(linkName), target);  } else {    return new URL(target, linkName);  }}
/** * Ensures that the link exists, and points to a valid file. * If the directory structure does not exist, it is created. * * @param target the source file path * @param linkName the destination link path */export async function ensureSymlink(  target: string | URL,  linkName: string | URL,) {  const targetRealPath = resolveSymlinkTarget(target, linkName);  const srcStatInfo = await Deno.lstat(targetRealPath);  const srcFilePathType = getFileInfoType(srcStatInfo);
  await ensureDir(path.dirname(toPathString(linkName)));
  const options: Deno.SymlinkOptions | undefined = isWindows    ? {      type: srcFilePathType === "dir" ? "dir" : "file",    }    : undefined;
  try {    await Deno.symlink(target, linkName, options);  } catch (error) {    if (!(error instanceof Deno.errors.AlreadyExists)) {      throw error;    }  }}
/** * Ensures that the link exists, and points to a valid file. * If the directory structure does not exist, it is created. * * @param target the source file path * @param linkName the destination link path */export function ensureSymlinkSync(  target: string | URL,  linkName: string | URL,) {  const targetRealPath = resolveSymlinkTarget(target, linkName);  const srcStatInfo = Deno.lstatSync(targetRealPath);  const srcFilePathType = getFileInfoType(srcStatInfo);
  ensureDirSync(path.dirname(toPathString(linkName)));
  const options: Deno.SymlinkOptions | undefined = isWindows    ? {      type: srcFilePathType === "dir" ? "dir" : "file",    }    : undefined;
  try {    Deno.symlinkSync(target, linkName, options);  } catch (error) {    if (!(error instanceof Deno.errors.AlreadyExists)) {      throw error;    }  }}