Remove emotion-utils and use packages from emotion-js/next#628
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…emotion to ensure no regressions when changing to @emotion/stylis
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tkh44
approved these changes
Apr 16, 2018
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What:
Remove emotion-utils and use packages from emotion-js/next. This decreases the size of emotion by around 1.2kb.
emotionis now 5.52kb min/gzipreact-emotionis now 8.27kb min/gzipWhy:
I wanted to experiment with making stylis smaller by compiling out parts that we don't use but that meant not supporting certain options that stylis supports which would require a major release for emotion-utils.
How:
I wrote a little script that reads stylis's src, changes the defaults of the options, removes the cases in stylis'
setfunction that set the options that we don't change at runtime and uses the Google Closure Compiler REST API to minify it (running the js version of GCC locally didn't work with stylis when I tried it last time). Since removing the cases in stylis'setfunction that set the options makes the options static, GCC can inline them and remove the unused code.Checklist: