JSPM

TypeScript 類型工具庫：提供豐富的類型操作工具和重新導出的內建類型 / TypeScript type utility library: provides rich type manipulation utilities and re-exported built-in types

Typesafe front matter

Type-safe filter and sorter builders for Drizzle ORM with automatic type inference and 20+ operators

Type-safe fetch for Next.js API routes — zero dependencies, zero lock-in, ~0.9KB runtime.

Zod validator adapter for WS-Kit with runtime schema validation and full TypeScript inference

Validators for Lunora: the v.* validator suite with end-to-end return-type inference

A comprehensive collection of useful TypeScript generic types and utility types to enhance type-safety and developer experience. Includes array, promise, object manipulation, and advanced conditional types.

极速智能的 TypeScript 类型生成器，支持深度解析对象 / JSON / 接口返回，一行代码搞定，让类型定义一键生成，彻底告别手写类型的繁琐。

⚡ Ultra-fast schema validation - 5x faster than Valibot, 30x faster than Zod

Schema authoring and type inference package for ExpressCSV

A simple and lightweight TypeScript type guard library for runtime type validation.

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

TS library for generating fake data for tests

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

typescript utility types including deep-strict-omit and pick type

Typed async workflows with automatic error inference. Build type-safe workflows with Result types, step caching, resume state, and human-in-the-loop support.

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

Headless GDScript (Godot 4.x) static analysis for Node — diagnostics, type-aware hover, completion, symbols, and navigation. The native binding of gdscript-analyzer (Roslyn for Godot).

The world's fastest and most accurate JSON Schema validator, with magical typescript inference

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

OpenAPI Specification TypeScript types for Fetcher - A modern, ultra-lightweight HTTP client for browsers and Node.js. Provides complete TypeScript support with type inference for OpenAPI 3.x schemas.

Type-safe REST API framework core - designed for AI-assisted development

JAST type system — a structural type checker over the AST (the 'TypeScript of JAST')

Typed async workflows with automatic error inference. Build type-safe workflows with Result types, step caching, resume state, and human-in-the-loop support.

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.

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

Zod validation adapter for fossyl

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.

Stop rewriting validators. Ship production-ready schemas with Zod Toolkit

Universal runtime type inference & auto-conversion — strings to numbers, booleans, objects, arrays, and more

Box Framework — Zod-based request validation with full TypeScript type inference

js to ts migration engine — converts commonjs to esm, infers types from ast analysis, extracts jsdoc annotations, and refines types with the typescript compiler

TypeScript-first environment variable validation with full type inference. Zero dependencies.

Fast TypeScript schema validation with rich inline-compiled constraints, zero-allocation hot path, Standard Schema and JSON Schema export — a Zod/ArkType/TypeBox alternative for Node, Bun & the browser.

Type-aware formula validator with configurable type matrices, aggregation functions, and arithmetic operation rules. Parses expressions into AST, validates syntax and semantics, and infers result types.

Parse SQL in TypeScript template literal types and infer the result shape from your schema — no codegen, no ORM.

A TypeScript DTO (Data Transfer Object) parsing and validation library. Define a schema once — get runtime validation and a fully inferred TypeScript type for free.

Universal WebSocket client for WS-Kit with type-safe message validation for browser and Node.js

A state management library for TypeScript built on functional programming primitives.

**bguard** is a powerful, flexible, and type-safe validation library for TypeScript. It allows developers to define validation schemas for their data structures and ensures that data conforms to the expected types and constraints.

Schema-first pattern matching for TypeScript — use zod, valibot, arktype, or any Standard Schema validator as match/case clauses

Generate type-safe TypeScript definitions, Zod schemas, and t3-env config from .env.example files

JavaScript runtime type inference utilities.

Next-gen way to create your own programming language!

A custom typed scripting language for BardsBallad with Monaco editor integration

Advanced i18n translation key scanner with enum and type inference support

TypeScript-first environment variable validation with schema-driven type safety

@apexo/type is a small, zero-dependency library that gives you easy and reliable type checks in JavaScript and TypeScript.

Runtime type validation with TypeScript type inference

Type-safe runtime configuration with Joi validation and schema-driven type inference

TypeScript type inference inspection tool

powerful TypeScript validation library built on the robust foundation of Effect combining exceptional type safety, high performance, and developer experience. Taking inspiration from Effect's functional principles, VEffect delivers a balanced approach tha

JavaScript JSON schema validation with TypeScript type inference.

AST-based Python to TypeScript transpiler. Convert Python code to clean, idiomatic TypeScript with full type preservation.

A comprehensive TypeScript utility library featuring fluent text building, type-safe switching, duration utilities, React hooks, and extended array/object prototypes for modern JavaScript development.

TypeScript type inference debugger — understand WHY a type became this type

Embeddable Prolog-style logic engine for JavaScript: declarative rules, unification, backtracking search, and four solver drivers (sync/async × callback/generator). Useful for pattern matching with extraction, constraint search, type inference, planners,

A hackable, extendable, functionally-composable way to go about dealing with wrangling types in JavaScript. Auto-casting, coercion, and type inference for the Alice in WOnderland world that is JS runtime.

Infer real TypeScript types from raw JSON data — one type from many samples, then emit .d.ts

A minimalist, type-safe ORM powered by Zod

Modern TypeScript utility library with pragmatic typing and zero dependencies

A tiny, type-safe event library with inferred payloads, selective subscriptions, and optional React hooks.

Vue integration for zorm

Give AI agents TypeScript type awareness

Automatic workflow analysis and type inference for Blok Framework

TSLite type system — a structural type checker over the AST (the 'TypeScript of TSLite')

Type checker for Synth AST - cross-language type inference and validation

Zero-duplication field mapping for TypeScript with full type safety and inference

⚡ Automatic environment variable parsing with zero configuration and type inference

TypeScript type inference and symbol navigation MCP server for Claude Code

Universal schema utilities for TypeScript. Zero dependencies. Works with Zod, Valibot, ArkType, Yup, Joi, io-ts, and more.

Runtime type guard generator for TypeScript. Create validators for objects, arrays, tuples and unions with automatic type inference. 3x faster than io-ts with zero dependencies.

  

SolidJS integration for zorm

lllc — compiler for ll-lang, a minimal statically-typed functional language that compiles to F#, TypeScript, Python, Java, and C#.

Semantic type checking for JavaScript.

Generic HFT-grade JSONL parser - NO hardcoded fields, consumer defines what to extract. Sub-10µs latency with memchr SIMD optimization. Parallel parsing, gzip support, schema validation.

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A type-safe string templating library for TypeScript

Fluent, type-safe builder for Next.js server actions.

Revolutionary scientific programming language with quantum computing, AI assistance, real-time collaboration, and blockchain verification

A TypeScript-first DSL for JSON:API — typed resource definitions, relationships, and inference

axiosflow-api is a server-side library that makes building TypeScript APIs significantly easier and more efficient. It provides a structured way to define routes, integrate middleware, and dynamically generate API schemas. This cohesive approach works sea

infer class types for bags of properties

Svelte integration for zorm

A TypeScript library for typed attributes and modifiers with deterministic evaluation

Extract TypeScript schemas from JSON / JSONL streams

Runtime type validation with TypeScript type inference

Blazing-fast, zero-dependency, TypeScript-first schema validation — 10x faster than Zod, 5x smaller.

Type-safe JSON Schema 2020-12 specification library with static type inference

A lightweight typed superset for JavaScript that catches type mismatches before runtime

A programming language with exact rational arithmetic, quantum computing stdlib, and Mesopotamian-themed syntax. Write Once, Inscribe Forever.

Modern TypeScript translation service with type inference and multiple providers. Framework agnostic with clean architecture.

Angular Expression Editor - Context-aware expression builder with validation, type inference, and AST generation

Convert CoffeeScript projects to TypeScript with intelligent type inference

A library to coerce values at run-time.

AI/LLM-native TypeScript validation library optimized for LLM outputs, function calling, and structured generation

Automatically generate TypeScript interfaces or JSON schemas from various data sources

mlscript

Zero-dependency TypeScript runtime type validation with full type inference

Structured JSON output from 12 LLM providers with a single function call. Type-safe, retry-resilient, zero boilerplate.

Universal schema utilities for TypeScript. Zero dependencies. Works with Zod, Valibot, ArkType, Yup, Joi, io-ts, and more.

Type-safe query key manager for TanStack Query and other state management libraries.

mlscript driver

Agnostic type-inference for React-style components in JS or TS

TypeScript type inference and query builder for CDP Data API SQL queries

🪄 A TypeScript-types patch for querySelector/querySelectorAll, make them return types you expect them to! 🔮

字面量即 Schema — schema 是惰性裸数据，动词全外置；写像 interface，组合像 JS

Type-safe environment variable management

A TypeScript-native, zero-dependency Finite State Machine with declarative schemas, advanced type-inference, lifecycle hooks, and immutable state for eliminating state explosion in complex workflows.

Clean CLI framework with commands, help, and validation - a better yargs

TypeScript-first schema validation library with JSON Schema support

A TypeScript configuration toolkit with automatic type inference

🚀 Universal, type-safe validation library for TypeScript/JavaScript. Define once, validate everywhere - React, Vue, Angular, Express, NestJS.

Type-safe string case conversion library for TypeScript

Classify property names to infer JSON data types based on singular/plural form

Generate JSON Schema (draft-07) from sample JSON data. Handles nested objects, arrays, type detection, and schema merging. CLI tool.

Infer real TypeScript types from raw JSON data — one type from many samples, then emit .d.ts

Framework-agnostic class-scoped matchers for expect customization. Type-specific, prototype-chain dispatch — author once, plug into Jest, Vitest, or any expect host.

Deep-clean any API response while preserving precisely inferred recursive types—no schemas, no boilerplate.

Customize expect with class-scoped matchers for Vitest. Type-specific dispatch on the prototype chain — chainable with .not, .resolves, and .rejects, with native diffs.

Customize expect with class-scoped matchers for Jest. Type-specific assertion dispatch on the prototype chain — chainable with .not, .resolves, and .rejects.