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206 packages found
typyts is a library to safely access nested object.
Defensive programming framework for TypeScript and JavaScript
Type check values. This is a fork of sindresorhus/is, but with CommonJS support.
Validate an email address according to RFCs 5321, 5322, and others
Library to check variable type and properties in object.
A smarter way to check Javascript types.
Robust and comprehensive type checking library for node and the browser
collection of utility functions support validation
A library for synchronous and asynchronous input validation.
A library for synchronous and asynchronous error handling.
test if a value is a javascript primitive type
A simpler version of Facebook's invariant implementation from React
Intuitive type checking functions exposed globally
a library for hassle-free type checking in Node.js
checktypes-js is a package to help you check the types of a item variable using simple type or scheme for an object
Interface checking for JS values
A custom code style for ESLint.
Simple and Fast Data Validation for Node.js
JS variable type checking