existent

Check if one or more paths exist, promise-less.

examples

const existent = require('existent')
 
existent('sheep.txt', (err, missing) => {
  console.log(err.message) // "File does not exist: /cwd/sheep.txt"
  console.log(missing) // ["/cwd/sheep.txt"]
})
 
// Takes an optional base path
existent(['a', '../b', 'c'], '/things', (err) => {
  if (err) throw err // "2 files do not exist: /b, /things/c"
})
 
// Synchronous variant (returns boolean)
existent.sync('package.json', ['node_modules', 'chalk'])
 
// Assertion
existent.assert(['penguin.js', 'flamingo.js'], 'lib')

api

existent(path(s), [base], callback)

Asynchronous variant. If base is provided (a string or array), it will be prepended to each path. The callback receives three arguments:

1. error or null
2. array of resolved missing paths
3. array of resolved existing paths

existent.sync(path(s), [base])

Synchronous variant, returns a boolean.

existent.assert(path(s), [base])

Throws if one or more paths do not exist.

install

With npm do:

npm install existent --save

license

MIT © Vincent Weevers