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Defensive programming framework for TypeScript and JavaScript

Check if strict mode is supported.

Check for what you need. Mainly for framework developers

Runtime type-checking for JavaScript.

JavaScript Object Filter. Deep filtering key/content recursively. Support type checking, wildcard, nested, and filter function in template.

Simple yet powerful permission manager for javascript applications.

Validation package for the state object in React

Official plugins for Resourceful Redux

Optionally load AMD dependencies. Useful for plugin authors extending/joining 3rd party libraries.

JavaScript automatic runtime type safety and functional polymorphism

Basic persistence capabilities for the data object.

Fully validate an email address's syntactic correctness and existence as a real email address that will not bounce. Basic RFC validation also available.

Modern, reliable, full featured, type checking helpers

AngularJS introspection utilities

Object template declaration and runtime type checking

A simple, convenient way to represent domain objects, leverage domain knowledge, and add runtime validation in your code base.

Function triggers error if array is too short to return a requested number of adjacent items beginning at a particular index

Function triggers error if a given index is a negative number, meaning the item was not found in the array.

Function triggers error if passed index is not valid, assuming an offset was recently added to it