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use production dependencies in final prod bundle #4844

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kuceb opened this issue Jul 29, 2019 · 3 comments · Fixed by #4842
Closed

use production dependencies in final prod bundle #4844

kuceb opened this issue Jul 29, 2019 · 3 comments · Fixed by #4842
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kuceb commented Jul 29, 2019 •
edited by brian-mann
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Ensure we are bundling production version of dependencies such as react, bluebird, react-dom etc

Purpose

  • if we bundle development versions, it hurts bundle size and efficiency(cpu, memory usage) and can conflict with development versions in AUT, for example messing up react devtools
  • additionally, development versions such as react add in internal debug code that holds onto references, which can keep objects around in memory and lead to performance degradation or increased memory / heap size
@kuceb kuceb mentioned this issue Jul 29, 2019
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@kuceb kuceb self-assigned this Jul 29, 2019
@cypress-bot cypress-bot bot added the stage: needs review The PR code is done & tested, needs review label Jul 29, 2019
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cypress-bot bot commented Jul 29, 2019

The code for this is done in cypress-io/cypress#4842, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

@cypress-bot cypress-bot bot added stage: pending release and removed stage: needs review The PR code is done & tested, needs review labels Jul 29, 2019
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cypress-bot bot commented Jul 29, 2019

Released in 3.4.1.

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How much bundle size we saved before and after?

@snyk-bot snyk-bot mentioned this issue Nov 1, 2019
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set node_env for production and add static asset tests cypress-io/cypress
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@Saibamen @kuceb