Why pay to learn coding in the age of AI?
AI didn't make coding skill worthless. It moved the value: from writing code to reading and steering it. Four findings from the past year, each with sources.
45%
of AI-generated code contained OWASP Top 10 vulnerabilities in Veracode's 2025 tests of 100+ models
Someone still has to read the code
AI ships bugs at scale: duplicated code rose 8x in 2024. Review became the bottleneck, and Google now runs a code-comprehension interview round: reading and debugging, not writing from scratch.
94%
of LLM-generated compilation errors are type-check failures, per a study cited by GitHub's Octoverse 2025
Types catch what AI hallucinates
The compiler flags the model's mistakes before they ship. Type-constrained generation (PLDI 2025) cut compile errors by more than half. Knowing the type system is knowing the steering wheel.
#1
most used language on GitHub since August 2025, past Python and JavaScript
The industry picked TypeScript for the AI era
Contributors grew 66% in one year, and GitHub credits AI-assisted coding for the shift. About half of professional developers now use it (Stack Overflow 2025).
19% slower
experienced developers working with AI, who believed they were 20% faster (METR RCT, 2025)
AI pays out to people who can judge its output
The lost time went into reviewing code they couldn't quickly judge. DORA finds the same: AI amplifies the judgment you already have.
What Pro actually buys you
Access to all 200+TypeScript challenges on this site, solved in an interactive playground. That's the reps you need to actually master the language: reading, judging, and steering code well enough to stay on top of AI instead of getting replaced by it.
Why I built this
I built TypeScript Pro as the resource I wish I'd had when I started with TypeScript. I do this because I love coding, TypeScript, and web development, and because I believe there will always be a place for well-rounded engineers. I'm not trying to get rich off a learning site. I want the next generation of engineers to have an affordable place to master the craft.
TypeScript Pro
$9/mo
- All 200+ TypeScript challenges, warm-up to extreme
- Interactive in-browser TypeScript playground
- Solutions and explanations for every challenge
- Concepts, error references, and blog stay free for everyone
30-day money-back guarantee · Cancel anytime
The 30-day money-back guarantee
If TypeScript Pro isn't for you, whatever the reason, email me at info@typescriptpro.com within 30 days of your first payment. I'll refund everything you've paid, no questions asked. You can also cancel your subscription anytime from your account.