Slow recompile time after upgrading to create-react-app 4.0 ?

Well there will be a fix for it available in next patch release but meanwhile a simple dirty trick to get up to speed :-

📌 Go to node_modules/react-scripts/config/webpack.config.js

📌 Add a cache:true key:value pair to the ESLintPlugin constructor object.

📌Start your app

Below is the link to the merged PR which I referred for the stated workaround.

fix: slow recompile time #9911

FezVrasta posted on Oct 26, 2020

fixes #9886

This is the commit that removed the cache flag: https://github.com/FezVrasta/create-react-app/commit/d07b7d025f5933710fcb01718617dbdf4bc54c33#r43578777

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