Optional Packages

A nullsafe traversal

Functional programming library for TypeScript

Return the first argument that is "!= undefined" (or "!= null", which is the same thing)

Functional Programming for EcmaScript(Javascript)

Mocha add-on method it.optional() which marks a test as pending if it would fail

Prevent issues with `fsevents` and other breaking, platform-specific `optionalDependencies` in `package.json` by including this plugin first in the plugins stack.

TS adapted Java Optional class with extra utility classes.

The default Babel preset for Fooxly projects.

Maybe

An opinionated Option and Result type for js and ts

Simple Java8-inspired monadic class to represent optional values

A simple and powerful templating system supporting conditional logic, optional chaining, nested data sources, non string templates, ternary operators, looping control flow and custom processing functions.

runtime peer dependency check

Package that helps you to be okay if some dependency is missing.

Checks if variable has specific type. It can be used for primitives but its power lies in complex types like interfaces and in optional logic.

Access and chain object properties and methods in a safe manner.

TypeScript transformer to make transpiled output of optional chaining and nullish coalescing less verbose

Simple function overloads for optional arguments

Transform sync, async or generator function to Stream. Correctly handle errors and optional arguments.

TypeScript maybe monad for reaching child fields inside complicated objects.