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mongoose validation to ensure referenced object id exists
A small package for consistently asserting if a value exists
A deeper determination if an URL exists.
Check if the npm package exists
Check if a link exists
Check if the binary exists on system
Synchronously check if a URL exists.
fs.existsSync polyfill
wrap fs.exists for case sensitivity
A simple fs wrapper that doesn't throw
Check if a directory exists without try catch
Finds the first existing file from a list of choices
A Babel plugin which emulates the `a?` existence check from CoffeeScript using the `??` syntax
Elvis operator functionality for JavaScript.
A tool to check if files are added in a git repository
Synchronously check if a URL exists.
The minimum and most straightforward way to check if command exists and where the executable is.
exists and allExist functions. plain and simple
fs.accessSync ponyfill for older versions of Node.js
Check whether an email address exists.