existential

The missing existential operator for JavaScript. Returns true unless a variable is null or undefined

Usage no npm install needed!

<script type="module">
  import existential from 'https://cdn.skypack.dev/existential';
</script>

Last version

The missing existential operator for JavaScript. Returns true unless a variable is null or undefined.

npm install existential

If you want to use in the browser (powered by Browserify):

bower install existential --save

and later link in your HTML:

<script src="bower_components/existential/dist/existential.js"></script>

var exists = require('existential');

console.log(exists(null));
// => false

console.log(exists('hello world'));
// => true