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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.import * as path from "../path/mod.ts";import { ensureDir, ensureDirSync } from "./ensure_dir.ts";import { exists, existsSync } from "./exists.ts";import { getFileInfoType } from "./_util.ts";import { isWindows } from "../_util/os.ts";
/** * Ensures that the link exists. * If the directory structure does not exist, it is created. * * @param src the source file path * @param dest the destination link path */export async function ensureSymlink(src: string, dest: string): Promise<void> {  const srcStatInfo = await Deno.lstat(src);  const srcFilePathType = getFileInfoType(srcStatInfo);
  if (await exists(dest)) {    const destStatInfo = await Deno.lstat(dest);    const destFilePathType = getFileInfoType(destStatInfo);    if (destFilePathType !== "symlink") {      throw new Error(        `Ensure path exists, expected 'symlink', got '${destFilePathType}'`,      );    }    return;  }
  await ensureDir(path.dirname(dest));
  const options: Deno.SymlinkOptions | undefined = isWindows    ? {      type: srcFilePathType === "dir" ? "dir" : "file",    }    : undefined;
  await Deno.symlink(src, dest, options);}
/** * Ensures that the link exists. * If the directory structure does not exist, it is created. * * @param src the source file path * @param dest the destination link path */export function ensureSymlinkSync(src: string, dest: string): void {  const srcStatInfo = Deno.lstatSync(src);  const srcFilePathType = getFileInfoType(srcStatInfo);
  if (existsSync(dest)) {    const destStatInfo = Deno.lstatSync(dest);    const destFilePathType = getFileInfoType(destStatInfo);    if (destFilePathType !== "symlink") {      throw new Error(        `Ensure path exists, expected 'symlink', got '${destFilePathType}'`,      );    }    return;  }
  ensureDirSync(path.dirname(dest));
  const options: Deno.SymlinkOptions | undefined = isWindows    ? {      type: srcFilePathType === "dir" ? "dir" : "file",    }    : undefined;
  Deno.symlinkSync(src, dest, options);}