book-test/node_modules/isexe/README.md

isexe

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.

USAGE

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 })

API

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.

Options

• 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.