Are The Types Wrong?

Checks whether an npm package's TypeScript types resolve correctly across module systems.

Artifact by Andrew Branch

IndexedMIT★ 1,613Developer toolsNo sign-up

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Opens arethetypeswrong.github.io in a new tab. Nothing to install.

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You provide: npm package name or tarball
You get: Per-resolution-mode problem report
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Oct 31, 2026

About

Are The Types Wrong? is an open-source web app in the developer tools category (npm types checker). It opens in your browser, so there is nothing to install. You provide npm package name or tarball and get per-resolution-mode problem report. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (arethetypeswrong/arethetypeswrong.github.io).

Category: Developer tools · npm types checker

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Stars: 1,613

Details

Auth: No auth
License: MIT
Repository: github.com/arethetypeswrong/arethetypeswrong.github.io
Website: arethetypeswrong.github.io/
First seen: Oct 31, 2026
Last checked: Oct 31, 2026
Source: GitHub

Cite this page

Are The Types Wrong?: free online tool. Agent Mart. https://agentmart.dev/artifacts/are-the-types-wrong (last updated 2026-10-31)