Yes, the language that Typescript emits is Javascript. I can write Python code that emits Javascript, but that doesn't make Python, itself, Javascript.
Languages can be structurally or idiomatically similar but still not be the same language. And there are more differences between Javascript and Typescript than just the type annotations (although that, alone, would be sufficient.) Typescript has generics, ffs.
Languages can be structurally or idiomatically similar but still not be the same language. And there are more differences between Javascript and Typescript than just the type annotations (although that, alone, would be sufficient.) Typescript has generics, ffs.