Typecheck Packages

Additional functionality to [kind-of][] type check utility. Support promises, generators, streams, errors.

Constraints checker for given object and rules along with it.

Provides a collection of runtime assertion tools for checking strict equality, type, and range of a set of values.

A type checker, that allows definition of additional types and constraints over them, checking objects against types and extension with default values before checks

Throws Error when data fails to meet params.

typescript boilerplate project

A tool that generates a TypeScript file from your Jison grammar's semantic actions so the TypeScript compiler will check those semantic actions for errors.

check json against typescript type definitions

Library-independent type checking similar to React Proptypes

Basic type checker

Babel preset for flow with typecheck

A simple type checker for function arguments in JavaScript.

A TypeScript error checker that supports Vue SFC(Single File Component). The world's only tool that runs type checking for both child components' prop types and event handler types on Vue template.

Validates javascript objects: type checking, regex and property exist.

Transforms flow type annotations into runtime type checks.

A Javascript runtime type checker

MayBe on Return constructor and useful functions

Check if a value is a VFileMessage object

Very simple validation package

A small library to provide function type checks functionalities