TypeScript Typechecker

Open-source TypeScript projects categorized as Typechecker
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TypeScript JavaScript Runtime type-checking Language
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Top 3 TypeScript Typechecker Projects

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Typechecker

  1. TypeScript

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

    Project mention: 個人開発者が始めるCloudflare MCPサーバー構築入門 | dev.to | 2025-12-17

    TypeScript公式サイト

  2. SurveyJS

    SurveyJS: Build JSON-Driven Surveys and Forms with Full Data Control. Add the SurveyJS UI components to your JS app (React/Angular/Vue3). Securely collect and analyze data without sending it to 3rd-party servers. Fully customizable, works with any backend, and ideal for data-heavy apps. Learn more.

    SurveyJS logo

  3. ts-runtime

    Runtime Type Checks for TypeScript

  4. is-what

    JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

TypeScript Typechecker discussion

TypeScript Typechecker related posts

  • Modern web development tools 2025 - Mastering Modern Web Coding Tools...

    1 project | dev.to | 13 Dec 2025

  • Good news: JavaScript is 30yo today Sad news: its own name doesn't belong to it

    3 projects | news.ycombinator.com | 4 Dec 2025

  • Stop Overcomplicating RAG: Why I Built a "Memory Server" on Postgres (and Open Sourced It)

    2 projects | dev.to | 27 Nov 2025

  • TypeScript Rewrote Itself in Go?! What That “10x Faster” Hype Really Means

    1 project | dev.to | 4 Nov 2025

  • The Temporal Dead Zone, or why the TypeScript codebase is full of var statements

    1 project | news.ycombinator.com | 3 Oct 2025

  • Stop Memorizing, Start Scripting: My Journey to cli-bits

    2 projects | dev.to | 15 Sep 2025

  • Enable –Strict by Default

    1 project | news.ycombinator.com | 11 Sep 2025
  • A note from our sponsor - SurveyJS
    surveyjs.io | 22 Dec 2025
    Add the SurveyJS UI components to your JS app (React/Angular/Vue3). Securely collect and analyze data without sending it to 3rd-party servers. Fully customizable, works with any backend, and ideal for data-heavy apps. Learn more. Learn more →

Index

What are some of the best open-source Typechecker projects in TypeScript? This list will help you:

# Project Stars
1 TypeScript 107,133
2 ts-runtime 493
3 is-what 197

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