fs.mkdtemp(prefix[, options], callback)

• prefix <string> | <Buffer> | <URL>
• options <string> | <Object>
  • encoding <string> 默认值: 'utf8'
• callback <Function>
  • err <Error>
  • directory <string>

创建唯一的临时目录。

【Creates a unique temporary directory.】

生成六个随机字符，附加在必需的 prefix 后面以创建唯一的临时目录。由于平台差异，避免在 prefix 中使用尾随的 X 字符。一些平台，特别是 BSD 系统，可能会生成超过六个随机字符，并将 prefix 中尾随的 X 字符替换为随机字符。

【Generates six random characters to be appended behind a required prefix to create a unique temporary directory. Due to platform inconsistencies, avoid trailing X characters in prefix. Some platforms, notably the BSDs, can return more than six random characters, and replace trailing X characters in prefix with random characters.】

创建的目录路径作为字符串传递给回调函数的第二个参数。

【The created directory path is passed as a string to the callback's second parameter.】

可选的 options 参数可以是指定编码的字符串，或者是一个具有 encoding 属性的对象，用于指定要使用的字符编码。

【The optional options argument can be a string specifying an encoding, or an object with an encoding property specifying the character encoding to use.】

import { mkdtemp } from 'node:fs';
import { join } from 'node:path';
import { tmpdir } from 'node:os';

mkdtemp(join(tmpdir(), 'foo-'), (err, directory) => {
  if (err) throw err;
  console.log(directory);
  // Prints: /tmp/foo-itXde2 or C:\Users\...\AppData\Local\Temp\foo-itXde2
}); 拷贝

fs.mkdtemp() 方法会将六个随机选择的字符直接附加到 prefix 字符串后。例如，给定一个目录 /tmp，如果目的是在 /tmp 内创建一个临时目录，则 prefix 必须以平台特定的路径分隔符（require('node:path').sep）结尾。

【The fs.mkdtemp() method will append the six randomly selected characters directly to the prefix string. For instance, given a directory /tmp, if the intention is to create a temporary directory within /tmp, the prefix must end with a trailing platform-specific path separator (require('node:path').sep).】

import { tmpdir } from 'node:os';
import { mkdtemp } from 'node:fs';

// The parent directory for the new temporary directory
const tmpDir = tmpdir();

// This method is *INCORRECT*:
mkdtemp(tmpDir, (err, directory) => {
  if (err) throw err;
  console.log(directory);
  // Will print something similar to `/tmpabc123`.
  // A new temporary directory is created at the file system root
  // rather than *within* the /tmp directory.
});

// This method is *CORRECT*:
import { sep } from 'node:path';
mkdtemp(`${tmpDir}${sep}`, (err, directory) => {
  if (err) throw err;
  console.log(directory);
  // Will print something similar to `/tmp/abc123`.
  // A new temporary directory is created within
  // the /tmp directory.
}); 拷贝