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158 packages found
Runtime library to validate data against TypeScript interfaces
An easy and powerful data validation code generator by JavaScript.
A tiny and fast dynamic type checker/enforcer library
A simple and composable way to validate data in JavaScript (and TypeScript).
Check data type
A type checking library where each exported function returns either true or false and does not throw. Also added tests.
Binary wrapper for Flow - A static type checker for JavaScript
Extended JavaScript Type Validator
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, powerful and flexible runtime type checker for TypeScript.
a simple javascript type checker & assertion library
Schemas for JSON Objects, or simply SJOT, offers faster JSON validation and type checking with lightweight schemas and compact validators. SJOT schemas have the look and feel of object templates and are easy to use.
Companion module for SJOT schemas (npm package sjot), creates a SJOT schema from JSON data to efficiently validate and type-check JSON data streams.