Fs.renameSync 抛出错误：重命名时 ENOENT，但文件存在

Question

为什么 fs.Renamesync 会在这里抛出错误：

this.parentDirectory = path.join(__dirname, '..', '..', 'Logs', serverType + '-logs');
this.logFilePath = path.resolve(this.parentDirectory, 'latest.log');
if (fs.existsSync(this.logFilePath)){
  var newName = await firstLine(this.logFilePath);
  newName += '.log';
  fs.renameSync(this.logFilePath, path.join(this.parentDirectory, newName));
}

它是这样说的：

(node:648) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory, rename 'D:\Unity\Projects\FlipSide\Logs\room-logs\latest.log' -> 'D:\Unity\Projects\FlipSide\Logs\room-logs\Log-room-2020-08-14T22:58:20Z.log'

（不，这不是unity脚本，它是一个独立的节点服务器。）

文件存在，但不会重命名。

Answer 1

一个正确的答案，因为示例不适合 cmets。

我怀疑 destination 目录不存在，也可能比它高几级。

cd /tmp
mkdir -p a/b/c   # A few levels exist.
touch a/foo.bar  # Our source file definitely exists. 
node
# Welcome to Node.js v13.2.0.

现在在 Node REPL 中：

const fs = require('fs')
// The destination directory does not exist, many levels of it.
fs.renameSync('a/foo.bar', 'a/b/c/d/e/f/g/foo.bar')
Thrown:
Error: ENOENT: no such file or directory, rename 'a/foo.bar' -> 'a/b/c/d/e/f/g/foo.bar'
    at Object.renameSync (fs.js:659:3) {
  errno: -2,
  syscall: 'rename',
  code: 'ENOENT',
  path: 'a/foo.bar',
  dest: 'a/b/c/d/e/f/g/foo.bar'
}

不，异常消息从不指定它是源还是目标。