JSPM

Package for creating mongoose schemas out of Zod schemas for type safety, and removing duplicate effort.

A smart JSON parser and stringifier that automatically converts dates, numbers, and booleans to their proper types — with multiple build formats for Node.js and browsers.

TSdux utilities for Observables

A type-safe storage solution for localStorage and sessionStorage with built-in TypeScript support, ensuring robust and scalable browser data persistence.

Type-safe Redux utilities for TypeScript

TypeScript utilities for type-safe error handling and optional values

A lightweight TypeScript library for managing and organizing query keys for React Query projects, enabling consistent, type-safe key usage without extra dependencies.

A strongly-typed Express router with Zod validation and automatic type inference for params, body, query, and middleware

Easily create a fully-typed Express JSON RPC API over HTTP. No code generation step required. Inspired by tRPC, but much simpler.

localStorage-based preference manager for web apps, userscripts etc

The modular and type-safe schema library for transforming values

🚀 Instant type-safe mock APIs from your TypeScript types. Zero config, maximum productivity.

Type-safe wrapper for Node.js Worker Threads

Type-safe reactive form builder for Svelte 5

A lenient XML stream parser for Node.js and browsers that can handle incomplete or malformed XML data, with depth control, CDATA support for XML serialization and round-trip parsing, wildcard pattern support for stopNodes, and CDATA handling within stopNo

TypeScript-first environment configuration with Zod validation, .env support, hot reloading, and startup validation. Zero-config setup - just install and use! Perfect for Node.js, AWS Lambda, and modern TypeScript applications.

Node.js fs and fs/promises wrapped in neverthrow Result types for type-safe error handling

A nested component Svelte 5 Runes pattern for structuring objects/arrays and their properties

Type-safe Restana service with Zod validation and OpenAPI generation

A comprehensive TypeScript library for Chrome Extension API, providing type-safe wrappers and utilities for bookmarks, commands, context menus, cookies, downloads, storage, notifications, runtime, scripting, and side panel functionalities.

type/data-centric schema library. A schema library empower you, not constrain you with their types messy types.

A Prisma-like, type-safe, and reactive ORM for IndexedDB. Say goodbye to callbacks and enjoy a modern developer experience in the browser

A lightweight JSON Schema validator generator that creates minimal TypeScript code and type definitions

A lightweight, type-safe dependency injection container for TypeScript.

A mini-ORM for localStorage with type safety and SQL-inspired API

mini-orm with full type support for postgres.

Type-safe MongoDB wrapper with Zod validation at runtime and compile-time.

A router based on parser combinators

A solution for type-safe IPC communication in Electron

Manage your environment variables with ease

A modern, type-safe REST API client builder for TypeScript/JavaScript applications with React hooks integration, automatic validation, and intelligent error handling.

A modern TypeScript validation library designed around familiar interface syntax and powerful conditional validation. Experience schema validation that feels natural to TypeScript developers while unlocking advanced runtime validation capabilities.

Enhanced promise type to be used with flow.js

Node Config Module

一个基于 YAPI 的 TypeScript 接口代码生成工具，支持自动生成类型安全的 API 接口文件

Utils for type-safe function composition in TypeScript.

Strongly-typed function to get a nested & potentially null/undefined property value safely from an object

Enhanced async/await effects for TypeScript applications. Effectively provides resilient error handling, dependency injection, retry logic, timeouts, circuit breakers, and resource cleanup for Node.js and browser environments. Build testable async workflo

Node.js child_process wrapped in neverthrow Result types for type-safe error handling

Type-safe event handling with runtime validation using guardz for unsafe data from 3rd parties

Lightweight, type-safe router for JavaScript and TypeScript applications with parameterized routes support

Option/Maybe type to be used with flow.js

A functional TypeScript/JavaScript component library with composable architecture based on Material Design 3

🔥Surgical Precision Type Safe For Realtime Database Web, Write RTDB Code That Stand The Test Of Time

A type-safe API mocking tool for frontend development, powered by axios and Zod.

A type safe translator that knows what to say and how to handle the rest. Supports custom messages, rich replacements, and async loading.

Simple type-safe actions

Minimal, type-safe CLI framework for Bun

A lightweight, type-safe dependency injection framework for TypeScript applications with comprehensive lifecycle management and layered architecture support

A TypeScript implementation of Rust-like traits and collections, providing efficient and type-safe implementations along with common trait patterns.

A highly typed, provider-agnostic analytics library for TypeScript applications

a lightweight, hook-based modal management library for React. It leverages React Context and custom hooks to offer an intuitive, type-safe API for handling multiple modals—making it easy to show, hide, update, and persist modal state across your app.

Type-safe utilities for working in TypeScript. For example, a type-safe property path type, deep partial type, etc.

A strict TypeScript-only utility to check if a number is odd, with modern type safety.

A type-safe string templating library for TypeScript

Type-safe Express route handlers based on OpenAPI schemas

Disposiq is a utility collection of Dispose pattern

type operation utilities.

TypeScript SDK for the Pinarkive API v2.1 - Full type safety for IPFS file management with directory DAG uploads, file renaming, and enhanced API key management. Perfect for TypeScript projects requiring compile-time type checking.

Type-safe environment variable parser with validation and error handling for Node.js and React Native

A lightweight, type-safe browser storage wrapper for localStorage and sessionStorage with namespace support and type checking.

A TypeScript and React library for providing type-safe internationalization messages.

Transform Prisma schemas to TypeORM entities with NestJS integration and fast pg-mem testing

client that connect http framework in phecda-server

A powerful and flexible configuration management library for NestJS applications. Supports JSON, YAML file loading, environment variable overrides, immutable configurations, and type-safe configuration access with dependency injection.

High-performance event system for React applications and services. Features type-safe event handling, automatic cleanup, real-time monitoring, and service integration.

🔥 High Precision Typescript Wrapper for Firestore React Native, Providing Unparalleled Type Safe and Dev Experience

A lightweight, type-safe RPC library for TypeScript with Zod validation

Type safe existential property access using ES6 proxies

Convert numbers to words in any language.

A modern TypeScript query string parser and stringifier with enhanced type safety and additional features

Comprehensive TypeScript Types Library for Electronic Medical Record (EMR) Applications - Domain-Driven Design with Zod Validation

A utility to convert Prisma schemas to Zod schemas.

一个基于 YAPI 的 TypeScript 接口代码生成工具，支持自动生成类型安全的 API 接口文件

The core engine for Nexus, a type-safe, default-safe, cross-context communication framework.

A library that allows you to generate mongoose schemas from zod objects.

Generic type guard to check if a given value is a member of enum

TypeScript client for Typsio, a RPC library based on socket.io.

Javascript (and Typescript) valibot number schemas

Rust's Result type for type-safe error handling in TypeScript.

A type-safe event emitter for TypeScript with priority-based listeners, sequential/parallel execution strategies, and memory leak detection

TypeScript SQL query parser with compile-time column type extraction

CLI para integração entre Swagger e Axios

A minimal TypeScript event bus: subscribe(Class, handler), async delivery, dead events, and polymorphic dispatch.

A TypeScript library for creating structured data objects with ease.

An Astro integration that allows for creating type-safe server endpoints.

route type safe for page location with pathname, query, hash, state

A type-safe set of utilities that focuses on reducing the amount of test code that you write while maximizing coverage. Compatible with BDD testing frameworks like Jasmine and Mocha.

A mini-ORM for localStorage with type safety and SQL-inspired API

Type-safe environment variable management for TypeScript applications

Type-safe schema validation library with zero dependencies

@ayka/fiji is a configuration management library that provides a flexible and type-safe way to handle application configurations. It supports environment variables, default values, and secret management.

Type-safe fragment masking plugin for GraphQL Code Generator, providing helper functions for managing GraphQL fragments with enhanced type safety and customizable configurations.

Simple, type-safe immutable data structure for Typescript

Type-safe cache key generation with zero dependencies

A comprehensive collection of 100+ production-ready React hooks for state management, UI effects, forms, animations, and more. Carefully curated and optimized for performance and developer experience.

Type-safe local storage

A modern, type-safe, and flexible HTTP framework for building scalable APIs with TypeScript

A strongly-typed dependency injection library.

Minimalistic, type-safe dependency injection solution for TypeScript

A small, growing set of type-safe TypeScript helpers.

Type-safe DynamoDB document mapper with schema-based operations

avro-schema-builder

A type-safe, modular, chainable image processing library built on top of OpenCV.js with a fluent API leveraging pipeline processing.

Maybe

Type-safe HTTP client that doesn't suck - Fetch for humans who have stuff to build

A TypeScript library that provides type-safe Remote Procedure Call (RPC) communication between different JavaScript contexts using various transport mechanisms

A simple and consistent error handling library for TypeScript applications. Provides type-safe error handling with great DX, solving common pain points like unknown error types, lost stack traces, async error handling, and error serialization. Isomorphic

Inject Typesafe is a 100% typesafe dependency injection framework for typescript that takes a alternative very lightweight approach to dependency injection that feels more like state management than a black box.

Framework-agnostic, lightweight router.

A Fastify plugin that automatically converts query parameter types based on Zod schemas

A reusable Directus + GraphQL codegen library & CLI

Type-safe result handling with MaybeError pattern

Co-located, type-checked translations for React components.

Type-safe deep merge utility.

A powerful, type-safe middleware system for Next.js with plugin architecture, route protection, caching, logging, and internationalization support

👮‍♀️ Type-safe interactions with any HTTP API

TypeScript library for building type-safe, composable services using a contract-first approach

Complete Next-Generation Discord Bot Framework with Type-Safe API, Auto-Caching, and Real-Time Gateway

React-Redux Type enhancement suite.

JsonIndexer is a utility class designed for efficient parsing and indexing of large JSON files. It reads the file in chunks to minimize memory usage, identifies specific arrays or objects by key, and builds an index for quick access. This index includes m

Type-safe path for Next.js

Transformer for Elysia and Hono

Arise type-safe IoC containers from your code. Zero overhead, zero coupling.

Core library of Retux, a minimalist declarative type-safe(strongly-typed) scalable Redux architecture.

Type-Safe Discord API Definitions and Utilities

A lightweight, fully type-safe MongoDB ODM in TypeScript, inspired by Drizzle ORM.

A lightweight type-safe function builder with interceptors, schema validation, and context management for TypeScript applications.

Type safe dependency injection

Type-safe event emitter with compile-time event name and payload type checking

A TypeScript library for handling units and measurements with support for multiple formats (tuples, objects, strings, dimensions) and operations (arithmetic, comparison). Modular, tree-shakable, and designed for safe, boilerplate-free usage.

🔗 Simplified, type-safe wrapper for web extension messaging, ensuring seamless communication across different contexts.

An opinionated type validator API indpendent from schema validators like Zod, Valibot, etc

A utility for managing search params state with TanStack Router in a type-safe way

Utilities for a more type-safe TypeScript

Turn your .env into a fortress—type-checked, secure, and effortless for React, Vite, and Node.

A lightweight, zero-dependency TypeScript library that brings Rust's Result type to your JavaScript/TypeScript projects

Architectural constructs for web applications.

TypeScript library offering robust contracts for encoding and decoding values with strong type safety.

Type-safe error handling with discriminated unions and type guards for TypeScript

A TypeScript library that brings Rust-inspired features to TypeScript, including traits, Option, Result, and more. Zero dependencies, type-safe implementation.

Universal automated translation management tool for i18n projects with dynamic language detection - works with Vue.js, React, Angular, Node.js, and any framework using JSON locale files

Set and get cookies with optional type validation with a Standard Schema.

A lightweight TypeScript library that enhances your SQL workflow by combining raw SQL with targeted type safety and schema validation

Modern TypeScript currency converter with type inference and multiple providers (Google Finance, Fixer.io). Framework agnostic with clean architecture.

Type-Safe Discord Component Builders with Fluent API

TypeScript client library for zdata backend API with authentication and full CRUD operations

🔧 Enhance your Chrome extensions with efficient and type-safe RPC communication across all layers.

Tool for type safe value validation

tailwind-merge + clsx wrapper

A parser combinator library designed for TypeScript, offering type inference and compile-time safety for building modular and maintainable parsers.

A comprehensive starter kit for building agent-centric applications with Next.js, featuring RAG capabilities, chatbot widgets, and multi-tenant architecture

Type-safe query engine for static content including Markdown, YAML, JSON, and more.

E2E Testing Reinvented with AI - A powerful TypeScript browser automation framework using AI-powered testing with LangChain, OpenAI GPT-4o, and Playwright

Fluently and type-safely write IPC for Electron

Type-Safe Discord REST API Client with Advanced Rate Limiting

A lightweight library for handling prompts with embeddable variables in a type-safe manner

Fast, type-safe utilities for vector embedding comparison and search.

Type-safe TypeScript decorators for generating OpenAPI specifications with Promise unwrapping support

Type-safe generic builder pattern implementation in Typescript

A TypeScript generic library for managing application configurations with complete type safety

library for crafting types and casting type inhabitants

**GG-Express** is an Express.js wrapper that enforces strong type requirements for `GET`, `POST`, `PUT`, and `DELETE` methods. It ensures that `req.query` and `req.body` follow strict structure definitions and automatically generates an `apiConnector` cla

A utility for fetching valid ARIA roles dynamically, validating roles, and providing type-safe access to ARIA role names.

A flexible and easy-to-use configuration management service for TypeScript/JavaScript applications, allowing initialization, setting, and retrieval of configuration parameters.

Predictable and strongly typed fetch requests.

Type-safe schema-based URL builder

A collection of dependency free functors written in typescript

Unopinionated utilities for interacting with REST APIs on the client-side

🚀 FinPro.js by Scott Lexium - The most comprehensive TypeScript library for financial data operations. Features 154+ currencies, 250+ countries, MongoDB-style queries, dual ESM/CommonJS support, and flag integration. Created by Scott Lexium for modern Ja

Type safe Object Document Mapper (ODM) for MongoDB

Library for defining, serving and consuming strongly typed endpoints in TypeScript

TypeScript中近乎完美的Class对象序列化解决方案 A near-perfect class object serialization solution for TypeScript.

Types and type-safe functions for JSON.

A powerful, type-safe SQL query builder for Node.js with support for MySQL, PostgreSQL, and SQLite. Features fluent API, transaction management, and connection pooling.

Unique IDs with prefixes, inspired by Stripe

A type-safe HTTP client that never throws. Inspired by Go's error handling pattern.

Type-safe hooks for React Router v6 that eliminate undefined checks and provide better developer experience

Rust-style Result type for TypeScript

Utility function to easily add timeout to any function returning a promise

Minimalistic type-safe service container

Library for checking js object property types

A TypeScript utility for serializing and deserializing structured payloads into compact string format.

Generate TypeScript types to be used with the PostgreSQL-Typed ecosystem from your PostgreSQL database.

Simple and Easy to use fetch API abstraction with zero dependency that is super small!

🔗 Simplified, type-safe wrapper for web extension messaging, ensuring seamless communication across different contexts.

Lightweight result wrapper for TypeScript with zero overhead and full control.

config manager

Modern, lightweight, and framework-agnostic internationalization library

Adds type checks for regular expressions.

A local-first, zero-setup visual database for your JSON files. Features spreadsheet-like editing, centralized Zod schema generation (like Drizzle), TypeScript-first validation, and smart file management. Perfect for developers working with JSON data.

A tiny TypeScript library for creating type-safe action creators and handlers, facilitating secure and efficient communication between agents such as iframes and web workers.

A powerful TypeScript library for building distributed systems with event bus, streaming capabilities, and remote object invocation. Features WebSocket-based bidirectional communication between Node.js and browser environments, service discovery, and type

A lightweight utility for mapping object properties between different shapes

Fix for Object.keys, which normally just returns an array of strings, which is not good when you care about strong typing

Practical, type-safe toolkit for simulating and understanding gacha rates and rate-ups.

intly is Type-safe (TS friendly) i18n library.

  

Complete example MCP server implementation with full specification support, type safety, and production-ready architecture. Demonstrates OAuth 2.1, tools, prompts, sampling, and notifications using Reddit as a real-world integration.

Type-safe configuration management for NestJS applications

Lightweight, progressive, type-safe error handling for TypeScript

A flexible, type-safe HTTP client adapter for TypeScript and JavaScript. Supports custom adapters and includes an out-of-the-box Axios adapter for easy HTTP request handling.

A functional, buildless, and type-safe way to write HTML in JavaScript.

A TypeScript utility for managing and configuring routes with type safety and nested route support

Utils for runtime and static type checking in JS and TS

Type-safe query string management and Zod schema generation.

A minimalistic, secure, type-safe, zero-dependencies, persistent data store

A powerful, flexible, and customizable logging utility for TypeScript and JavaScript applications. Supports multiple log levels, context-aware logging, JSON and text output formats, and external log transmission.

Simple and lightweight module for dynamic type checking.

Declaratively create type-safe HTML and SVG elements.

Isomorphic type-safe path utilities.

Type-safe, developer-friendly MongoDB aggregation pipeline builder for TypeScript, with auto-relation support and full IntelliSense. Works great with NestJS, Mongoose, or Node.js apps.

compile time async dependency injection plugin

NestJS integration module for @devgrid/netron, providing seamless distributed system capabilities with decorators, dependency injection, and automatic service discovery in NestJS applications.

A collection of tiny, useful, type-safe React hooks.

High-performance, type-safe logging library for Bun with advanced TypeScript body intersection, modular strategy pattern, transform streams, and immutable API design.

Type-safe environment variable validation for Node.js using Zod schemas or custom adapters. Load .env files, expand variables, fetch async secrets, and validate process.env at startup.

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fast-moving, less tested version of elm-state-interface

A lightweight TypeScript library that simplifies the creation of structured data objects and classes. It provides a type-safe and flexible way to define classes with custom properties and initialization logic.

Library for defining, serving and consuming strongly typed endpoints in TypeScript

AWS S3 cache engine for cacheman

Minimalistic, type-safe dependency injection solution for TypeScript

Automatically generate TypeScript interfaces from JSON data, API responses, or database schemas. Perfect for Mongoose, Sequelize, and raw data. Simplify your workflow and ensure type safety with just one function call!

A TypeScript-based tool to generate locale JSON files for i18n frameworks with type safety. It ensures missing translations are caught during development, reducing errors and streamlining localization. Fully customizable input/output paths, compatible wit

TypeScript library for type-safe and lossless encoding and manipulation of world currencies and precious metals

A type-safe dependency injection container with lazy loading and caching

A production-ready, real-time, type-safe publish-subscribe system with dynamic schema loading, automatic client code generation, and **full Node.js compatibility**.

A powerful factory for creating extensible and type-safe enums in TypeScript, offering enhanced flexibility and features compared to native enums.

TypeScript functional programming library with over 70% AI-generated code, featuring precise type inference and currying support

A tiny, TypeScript-powered package of hyper-fast LitElement mixins. Enhance your web components with swift, type-safe functionality that’s easy to integrate.

A flexible and extensible multi-database plugin for TypeScript projects, initially featuring MongoDB support. This plugin offers generic CRUD operations with company and user segregation, type-safe document handling, automatic metadata tracking, and built

Fix for Object.hasOwnProperty, which normally just returns a boolean, which is not good when you care about strong typing

A TypeScript utility for managing and configuring routes with type safety and nested route support

A tiny utility for safely extracting property names from TypeScript objects — inspired by C#'s [`nameof`](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/nameof) operator.

Tyne is a minimalist, type-safe schema system for defining data shapes, inferring TypeScript types, validating runtime data, and generating `.d.ts` files. Built for speed, clarity, and type fidelity.

Type-safe Notion content layer for easily rendering Notion content. Works with the Remark & Rehype ecosystem.

Safely convert to the desired data and error-free refine values.

`simple-fetch-ts` is a TypeScript library designed to simplify HTTP requests using a builder-pattern approach. It provides a fluent API for creating, configuring, and executing various HTTP methods (`GET`, `POST`, `PUT`, `PATCH`, `DELETE`) with type safet

Generate type-safe route utilities for Next.js app router

over-engineered, type-safe, headless, and extensible tooltip builder vs Svelte action

TypeScript SDK for XRAY/AURA Core

Type-safe typescript wrapper for multicall3

Helper library to make React Router navigation type-safe

A safe way to retrieve values from any level of the object cavity

A lightweight TypeScript library for writing URLs in a type-safe manner 👍.

Type-safe cookie package built for TypeScript.

A simple, type-safe, and functional way to create HTML documents in TypeScript.

Type-safe RPC framework

A collection of utility functions for React and JavaScript, providing type-safe utilities for common tasks like prop management, conditional rendering, and more.