node package manager
Share your code. npm Orgs help your team discover, share, and reuse code. Create a free org »



Minimal module to check if a file is executable, and a normal file.

Uses fs.stat and tests against the PATHEXT environment variable on Windows.


var isexe = require('isexe')
isexe('some-file-name', function (err, isExe) {
  if (err) {
    console.error('probably file does not exist or something', err)
  } else if (isExe) {
    console.error('this thing can be run')
  } else {
    console.error('cannot be run')
// same thing but synchronous, throws errors 
var isExe = isexe.sync('some-file-name')
// treat errors as just "not executable" 
isexe('maybe-missing-file', { ignoreErrors: true }, callback)
var isExe = isexe.sync('maybe-missing-file', { ignoreErrors: true })


isexe(path, [options], [callback])

Check if the path is executable. If no callback provided, and a global Promise object is available, then a Promise will be returned.

Will raise whatever errors may be raised by fs.stat, unless options.ignoreErrors is set to true.

isexe.sync(path, [options])

Same as isexe but returns the value and throws any errors raised.


  • ignoreErrors Treat all errors as "no, this is not executable", but don't raise them.
  • uid Number to use as the user id
  • gid Number to use as the group id
  • pathExt List of path extensions to use instead of PATHEXT environment variable on Windows.