It’s also worth pointing out that depending on your wants/needs, there are a lot of features that will still require babel in your pipeline. If you’re supporting IE, you’ll need it for async/await transforms (though that gets into multiple builds/targets), the conditional operator (?.) and others are very useful but not in TS. Many features the TS team refuses to consider. They mostly just support the typing and type checks. TSLint is being phased out in favor of ESLint plugins. I also feel that TS should just be a plugin for babel. There is one but all it does is strip your types.