io-ts

Runtime type system for IO decoding/encoding

ajv

The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)

Scout APM

Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.

runtypes

Runtime validation for static types

TypeScript

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

Yup

Dead simple Object schema validation

react-hook-form

📋 React Hooks for form state management and validation (Web + React Native)

class-validator

Decorator-based property validation for classes.

SonarLint

Deliver Cleaner and Safer Code - Right in Your IDE of Choice!. SonarLint is a free and open source IDE extension that identifies and catches bugs and vulnerabilities as you code, directly in the IDE. Install from your favorite IDE marketplace today.

joi

The most powerful data validation library for JS [Moved to: https://github.com/sideway/joi] (by hapijs)

Superstruct

A simple and composable way to validate data in JavaScript (and TypeScript).

proposal-record-tuple

ECMAScript proposal for the Record and Tuple value types. | Stage 2: it will change!

class-transformer

Decorator-based transformation, serialization, and deserialization between objects and classes.

typebox

JSON Schema Type Builder with Static Type Resolution for TypeScript

typescript-is

joi

The most powerful data validation library for JS

proposal-iterator-helpers

Methods for working with iterators in ECMAScript

bangle.dev

Collection of higher level rich text editing tools. It powers the local only note taking app https://bangle.io

tiny-schema-validator

JSON schema validator

next-joi

Validate NEXT.js API Routes with joi

typescript-json-decoder

Json Decoder for Typescript

Playwright

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.