Optional Packages

Allows you declare optionalPeerDependencies that can be satisfied by the top level module but ignored if they are not.

Allows you to optionally include modules without surrounding everything with 'try/catch'

A browserify transform that allows optional dependencies in try..catch blocks

Extract the options and callback from a function's arguments easily

Optionals for JS - wrapper for possibly undefined values, inspired by Java Optional API

Validate and format function arguments ( handles types and optionals)

NodeJS Require that let you handle module not found error without try/catch

Optional (like Java) implementation in TypeScript

Eliminate null/undefined errors in JS...and more!

Provide optional-chaining plugin on gatsby

Data structure for working with values that may not exist

Make the 'new' keyword optional for ES6 classes

Overloads a function. Makes parameters optional.

require, or...

Possible Function. Wraps what might be a function, with fallback behavior in case it’s not. Perfect for use in functions that accept optional callback arguments.

Non-intrusively convert the result of any function or promise to the user's desired style.

A js package to get a string of dynamic and conditional css classes

Wrap and validate optional values

Defines fallback behavior in case a variable is not a function. Perfect for optional callback parameters.

Require optional modules