Exists Packages

A library written in Typescript which tries to check if an email address really exists

Check if an SMTP server accepts emails to a given address.

Neater control exists component or component type for jsx

Check if a datum exists without reading its value.

Check if a file exists. ES6 module compatible, non-depracated fs utils.

Additional methods for node fs module

Tests whether a path exists on the filesystem.

A less violent require.

Check if a file exists without try catch

fs.access ponyfill for older versions of Node.js

Returns existence of key or value in an object

Validate that referenced documents exist in Mongoose.

Make sure context exists

Grunt task for validating if file(s) exist.

Async url ping validation

File system functions wrapper.

An appendable array with file persistance/listeners, producer/consumer and inter process capabilities

Check if package.json contains a script

call a callback when a file is created

Validate if a directory exists