Checking Packages

Typescript runtime type assertion. Works with a transformer that compiles structure information into the javascript code.

Validation framework for TypeScript and JavaScript

A parameter management utility.

Simple library allowing for adhoc polymorphism with javascript functions

Simple JavaScript type checking module. Returns a Boolean or type name for each type check.

A smarter way to check Javascript types.

ESLint shareable configuration from Conaclos

simple express-validator wrapper for easier work with validation error handling

Dead-simple spell checking in CodeMirror.

Simple cross-engine type checker

A simple utility for checking JavaScript types.

Tiny type/argument validation library.

Robust and comprehensive type checking library for node and the browser

Intuitive type checking functions exposed globally

assertions for node and browser

Validate an email address according to RFCs 5321, 5322, and others

test if a value is a javascript primitive type

Infer the content-type of a request.

Simplistic and minimal runtime type checking system for Node.js applications

Static-typing and optional parameters in native JavaScript.