This has nothing to do with TypeScript

Generally speaking, if someone specifies "TypeScript," I expect the type system to be the interesting part of the writeup. Otherwise, it could say "JavaScript."

(It could say "React," but still, the interesting part is that you built a scraper/visualizer, not that it used React.)

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If the headline said "Using Python to obtain one of the rarest license plates" you wouldn't think twice.

That’s true. But the analogy is more correct if it said “Using Mypy to obtain…”

The scripts he wrote to pull the data were written in TypeScript, though all the TS I see is in the parameters in the function signature. Also he used Next.js for the dashboard

I think the GP's point was that the part of the article that's most interesting is the investigation into how the DMV's plate system works. The fact that Typescript was used is incidental (of course this could have been done in pretty much any language), and it's an odd choice to include the language choice in the article title.