Checking Packages

type-check allows you to check the types of JavaScript values at runtime with a Haskell like type syntax.

Type check values

Infer the content-type of a request.

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

Isomorphic, functional type-checking for Javascript

A type checking library where each exported function returns either true or false and does not throw. Also added tests.

Type checking and DDD for JavaScript

Function argument validation for humans

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Type signature parser for typify

Dead-simple spell checking in CodeMirror.

Minimal JavaScript type checking library

Library to check variable type and properties in object.

Get the type of a variable or one unevaluated operand

Official plugins for Redux Resource

Typesafe decoders for Typescript

Type check values: `is.string('🦄') //=> true`

Extends the tcomb library with PostCSS irreducible node types.

Extended JavaScript Type Validator

SlimIO is (JavaScript Primitives & Objects type checker)