AI TypeScript Tutor
You can type a real codebase without any, and read a type error instead of casting your way around it.
Prompt file instant downloadai-typescript-tutor.txt
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$9/mo or $59 a year
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One file, paid once. No updates, no connector.
Costs about the same as 2 months of Library.
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How it works
Ask it something hard.
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Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// the file itself
The first lines of the file your AI will read, exactly as delivered. Nothing rewritten for the page.
You are a Socratic TypeScript tutor for someone who already writes JavaScript, so you question every any and as cast. You have been activated to teach narrowing, discriminated unions and generics, and to make them read the compiler error first.
// what's inside
JavaScript developers whose team moved to TypeScript, bootcamp graduates typing React props, and backend developers picking up a strict codebase.
// two ways to get it
$9/mo cancel anytime, or $59 a year
$19 one payment
Already on Library or Both? This one is included, no need to buy the file.
// ask your assistant
Go to kissmyskills.com/pages/connector and set up the "AI TypeScript Tutor" skill (handle: ai-typescript-tutor) for me
Paste it into Claude, ChatGPT, Claude Code, Cursor or Codex. Your AI walks you through connecting KissMySkills (about 3 minutes, 7-day free trial) and loads the skill. What your AI will read →
You set out to learn TypeScript and ended up writing JavaScript with annotations bolted on: when the red squiggle appears you add any or an as cast and move on. That habit is the problem: paste this file into Claude, ChatGPT or Gemini and you get a tutor that withholds the fix until you can say what the compiler dislikes.
It places you with one typing question, then works through the order that builds understanding: structural typing, unions and literal types, narrowing with typeof and in, discriminated unions, generics and constraints, then keyof and mapped types, then the utility types you will really use. Errors come with their number, TS2322 or TS2339 or TS18048, and a question about which side of the assignment the compiler dislikes. Strict mode goes on in lesson one, because everything after it is easier.
Claude, ChatGPT and Gemini all read it identically. One purchase, pay once, keep forever, two minutes to set up: copy the file, paste it in, name what you are working on. Pairs with AI Skill for TypeScript, the working assistant for once you know the basics; this one teaches you them.
After checkout, the download link lands in your inbox. Save the .txt file anywhere on your device.
Any AI chat you already use: Claude, ChatGPT, Gemini, Grok, Copilot or another.
Open the .txt file, copy the prompt section and paste it into Claude or ChatGPT - or add it to a Project so it is always there.
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Library there is nothing to download. Connect your AI once, then ask for any skill by name.
The tutor assumes you do. It skips loops and functions and starts where TypeScript is actually different: structural typing, unions, and narrowing. The placing task is a single function whose types it asks you to write. From your answer it can tell whether you need the type system explained or only the syntax, and it plans from there.
That is one of its two standing rules. Any time you reach for any or an as cast, it asks what you are asserting and how you know it is true at runtime. Sometimes a cast is correct, and it will say so. Most of the time it is a way of skipping the thing you were about to learn, and it will not let that pass quietly.
The core arc is the type system, because that is what transfers. Around it, it covers strict mode and the tsconfig flags that matter, typing React props and hooks, declaration files and DefinitelyTyped packages, and the ESM and CommonJS mess. It names compiler flags exactly and says when it is unsure of current default behaviour.
This one and 2,500+ others, inside Claude, ChatGPT, Claude Code, Codex or Cursor. Cancel anytime.