May I suggest changing the name from 'Typescript Playground' to something like 'Typescript Sandbox'? I found myself on a very nsfw website at work after clicking on a link shown in the results of a search using the strings 'TS' and 'Playground'.
Guess I can put off that decision to switch to ddg a bit longer…
Then I tried "ts playground". Woof. That is a big no-go!
I definitely recommend being specific and explicit (in your phrasing...) with ddg still.
Location probably plays a part in the normal search.
It is funny how do many people jumped on the search "for research" and proudly report back on the typescript vs porn ratio.
I walked into the library one day and all three computers were taken, but right before I turned around to leave, somebody got up and freed up the middle computer. I quickly darted over to it before someone else had the chance. I sat down and because my adrenaline was slightly going, I typed in Angelfire.com really fast, ready to start building. Only it was anglefire.com, a hardcore porn site with flashing green banners and gifs, VERY noticeable. I was so confused as to what the fuck just happened that I froze for several seconds - staring at the screen in disbelief - before it occurred to me to close the god damn browser idiot! I remember going into a full-on panic; nausea, heart-racing, the works.
I was sure I got caught and would be expelled. There's no way it went undetected. I was surrounded by two people to my sides, six people at the circle desk behind me, and the librarian working at the shelf behind them. Somehow during those many seconds of just staring at the screen in a panic, not a single freakin person noticed! I couldn't believe it.
Now you would think I would be thankful nothing bad came of it and learned a valuable lesson, but being the opportunistic teenager I was, I took note how everyone was so entrenched within their own personal bubble. They wouldn't notice anything I was doing at those computers. I eventually used that knowledge to hack the security software on there and install a key-logger...
(That's a "Chi" not an "Ex")
Your choice of naming matches mine too, the abstraction which lets anyone build their own TS repl is called the sandbox: https://www.typescriptlang.org/dev/sandbox/