Does TypeScript suffer from the same performance issues that Gradual Typing systems share [1], or does it sidestep these by virtue of being transpiled? Naively

Does TypeScript suffer from the same performance issues that Gradual Typing systems share [1], or does it sidestep these by virtue of being transpiled? Naively I'd guess not, which would mean that converting a library to Typescript would often impose a severe performance impact on JS users, but potentially afford significant gains for TypeScript users. In TypedRacket, for example, using types in some (but not all) of your code can result in up to 100x slowdowns, until eventually breaking through into performance gains once most or all code is converted. [1]: http://blog.acolyer.org/2016/02/05/is-sound-gradual-typing-dead/ http://blog.acolyer.org/2016/02/05/is-sound-gradual-typing-d...