Look into performance improvements about haul HOT 4 OPEN

I did some performance comparisons - http://blog.nparashuram.com/2017/04/react-native-packager-vs-haul.html

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Maybe we need some tests on CI which report back the change in performance.

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Thanks, I just had a quick read to see how it performs. Not that bad as far as first builds are concerned. We've already made few improvements that are not yet released and are likely to make the initial difference smaller (e.g. babel cache or different source map generation). I am curious how's master performing against packager now.

Is the repository you linked on Twitter earlier the source code you used for tests? I would be interested in having a framework to continuously test how it performs.

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@grabbou Yes it is - The repo is at https://github.com/nparashuram/Haul-vs-ReactNative.

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