Webpack 3 vs 4 test script

test.sh

# Clear out the babel-loader cache, and the happypack cache.
rm -rf ./node_modules; npm install --silent;
rm -rf ./tmp

echo 'webpack@3.8.1'
NODE_ENV=production time npm run webpack:compile

# Clear out the babel-loader cache, and the happypack cache.
rm -rf ./node_modules; npm install;
rm -rf ./tmp

# Install the newer version of webpack

npm install --silent git://github.com/webpack/webpack.git#b7c746d73f04eac0fe9f751e979ff1c85b28bd9a
echo 'webpack@b7c746d73f04eac0fe9f751e979ff1c85b28bd9a'
NODE_ENV=production time npm run webpack:compile