In this article, we review attw script in CopilotKit codebase. You will learn:

What is attw?

attw script in CopilotKit

What is attw?

attw is a CLI for arethetypeswrong.github.io. .This project attempts to analyze npm package contents for issues with their TypeScript types, particularly ESM-related module resolution issues. The following kinds of problems can be detected in the node10, node16, and bundler module resolution modes:

💀 Resolution failed .

❌ No types .

🎭 Masquerading as CJS .

👺 Masquerading as ESM .

⚠️ ESM (dynamic import only) .

🐛 Used fallback condition .

🤨 CJS default export .

❗️ Incorrect default export .

❓ Missing export = .

🚭 Unexpected module syntax .

🥴 Internal resolution error .

🕵️‍♂️ Named exports .

Below is a check I ran on my npm package, thinkthroo and these were the issues found

attw script in CopilotKit

Since now that we understand what attw does, let’s review how CopilotKit uses this in the package.json script.

I the…