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Flow Type had a way of embedding type code in JS block comments [1]. There is an open issue for Typescript, but it looks it didn't went too far [2]
[1]: https://flow.org/en/docs/types/comments/
[2]: https://github.com/microsoft/TypeScript/issues/9694
For what it’s worth, there’s also TSDoc[1] which is TypeScript’s sorta-equivalent spiritual successor, and notably uses the same format as JSDoc. Inline type annotation is great—and I vastly prefer it to JSDoc as a type annotation mechanism—but supporting the breadth of documentation capability in an inline code position would probably be unwieldy no matter how you try to accommodate it.
1: https://tsdoc.org/