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The "export defer" TC39 proposal aims to introduce a similar optimization *at the language level*, so that you can rely on it in all the tools and environments that you might run your code with. Just because you need one thing from a module, you shouldn't pay the cost of all the others!

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VoidZero@voidzero.dev

Why did adding ONE component make your build drastically slower? The answer is often: Barrel files. Luckily, you can enable Lazy Barrel Optimization in @vite.dev 8 and @rolldown.rs do bring your build time back to normal. Want to know more? Check the video & docs rolldown.rs/in-depth/laz...

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