Created by: SophiaChen2021
For sass-loader 8.0.0 and higher, the default number of threads used is 4, and thread size can be configured by setting the UV_THREADPOOL_SIZE env var, it can improve the build performance. Detail: https://confluence.skyscannertools.net/display/LEOP/Standardizing+backpack-react-scripts%28BRS%29+As+The+Only+Build+Tool