alt Hacker NewsThat is exactly how it works. Any IDE providing you intellisense is using the TypeScript language service. That's why this article is called "JSDoc is TypeScript". If you see a red squiggly because of your JSDoc comment, you are almost certainly already using TypeScript (without any .ts files)
Ha! I see I elicited the copy/paste response I’ve seen elsewhere. The gp comment I was replying to implied a JSDoc only solution (“all in JSDoc”), but given the response, clearly they’re still relying on the TypeScript language service (aka lsp plugin) to achieve type checking inside their IDE.
Wishful thinking on my part that an alternative solution for JSDoc based type checking exists :)