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


    创建唯一的临时目录。

    Creates a unique temporary directory.

    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.

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

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

    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.
    });