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232 packages found
An Optional type inspired by Scala's Option for better undefined handling.
Extract the options and callback from a function's arguments easily
Normalizes arguments for JavaScript functions with optional arguments and provides optional typing.
Wraps a function whose last argument is preceded by optional arguments so that when fewer arguments are passed in, missing optional arguments are filled in as `undefined`.
Provide Optional functionality for null/undefined safety!
node.js variable arguments simplified
Assigns default values to an object along with validating for required and unknown property keys.
Array of "optional tags" defined by the HTML specification.
Validate and format function arguments ( handles types and optionals)
Functional "Optionals" solution for JavaScript and TypeScript with async support
Make the 'new' keyword optional for ES6 classes
A javascript (typescript) library inspired by scala's Option monad.
Make the 'new' keyword optional for ES6 classes
NodeJS Require that let you handle module not found error without try/catch
Return the first argument that is "!= undefined" (or "!= null", which is the same thing)
Simple function overloads for optional arguments
Mocha add-on method it.optional() which marks a test as pending if it would fail
Functional TypeScript utility types such as Option, Result and others.
- monad-library
- monads
- typescript
- monad-ts
- functional-ts
- functional-programming
- javascript
- functor
- optional
- result
- maybe
- either
- result-monad