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152 packages found
Runtime library to validate data against TypeScript interfaces
Binary wrapper for Flow - A static type checker for JavaScript
An easy and powerful data validation code generator by JavaScript.
A simple and composable way to validate data in JavaScript (and TypeScript).
A tiny and fast dynamic type checker/enforcer library
A type checking library where each exported function returns either true or false and does not throw. Also added tests.
A recursive run-time type checking package that is simple to use yet provides all the functionality you will ever need. Written by and for Typescript.
Check data type
Superfast runtime validators with only one line
A small set of functions to check value against a specific type
- type
- check
- guard
- isNumber
- isArray
- isString
- checker
- isFinite
- undefined
- null
- primitive
- isFunction
- function
- isUndefined
Extended JavaScript Type Validator
TypeError Decorator for JavaScript & TypeScript
A simple type checking library for Node.js
👺 weak but accurate type checking that returns a string representation of input's type
- type
- types
- coerce
- coercion
- checker
- check
- flow
- typing
- typeof
- typeov
- detection
- ispromise
- isnumber
- isinfinity
- View more
Superfast runtime validators with only one line
Thorough javascript type checker
Detect and validate file types by their signatures (✨magic numbers✨)
A small library for checking types
a simple javascript type checker & assertion library