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fs.statSyncでファイルの存在判定

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node書いてたときのメモ。

ファイルが存在しているかを確認したい。

versions
node -v
> v4.2.3

fs.existsSync(path) はv1.0.0でDeprecatedになっていたので、fs.statSync(path)を使う。

sample.js
fs.statSync('hoge.txt');
// Uncaught Error: ENOENT: no such file or directory, stat 'hoge.txt'

hoge.txtが存在しないと、エラーになるので
try catchでくるんであげる。
ENOENT は、「No such file or directory」のエラーコード。)

sample.js
function isExistFile(file) {
  try {
    fs.statSync(file);
    return true
  } catch(err) {
    if(err.code === 'ENOENT') return false
  }
}

isExistFile('./hoge.txt');
// false

もちろん存在する時はtrueになる。

tokimari
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