A lightweight, dynamic schema library for JavaScript/TypeScript — define and evolve entity fields at runtime without migrations.

Type-safe Neo4j ORM / OGM for TypeScript. Define your graph in GraphQL SDL, get fully typed Prisma-like CRUD, optimized Cypher, and zero-config code generation. Community successor to @neo4j/graphql-ogm.

openapi gen typescript define and request api file

Simple and declarative media queries triggers. Written in Typescript. Define breakpoints and get notified when it changes.

Type-safe i18n for TypeScript, define localized exception and message catalogs with compile-time validated parameters.

The Entity-First Full Stack Framework for TypeScript. Define your entities, never write boilerplate again.

A Notion ORM for TypeScript. Define Notion-backed models with a declarative schema, retrieve/create pages with type safety.

> A lightweight, type-safe Strapi v5 client for Node.js and TypeScript. Define schemas once, get fully-typed responses and automatic populate queries — no manual configuration needed.

Type-safe URL paths for TypeScript — define a pattern once, then build paths and parse URLs with full type inference, search params, and Standard Schema validation. Not a router; the typed path toolkit you build one on.

Define multiple non-enumerable properties at once. Uses `Object.defineProperty` when available; falls back to standard assignment in older engines.

`Object.defineProperty`, but not IE 8's broken one.

Define a data property on an object. Will fall back to assignment in an engine without descriptors.

Type-safe API schema builder for TypeScript — define HTTP endpoints with Zod validation, full OpenAPI 3.0 compatibility, and adapters for Axios, Fetch, and Alova.

Write Solana programs in TypeScript. Define programs, send transactions, query accounts.

Define a non-enumerable property on an object. Uses Reflect.defineProperty when available, otherwise Object.defineProperty.

Nexus TypeScript SDK

Define a lazily evaluated property on an object

A library for setting up JavaScript factories to help build objects as test data, with full TypeScript support

TypeScript-first schema declaration and validation library with static type inference

> Deploy apps with TypeScript. Define services, databases, static sites, cron jobs, and more as code — then deploy to any runtime.