use const where applicable in UglifyJsPlugin
use const where applicable in UglifyJsPlugin

g0ddish/webpack,g0ddish/webpack,rlugojr/webpack,rlugojr/webpack,ts-webpack/webpack,NekR/webpack,webpack/webpack,jescalan/webpack,EliteScientist/webpack,webpack/webpack,ts-webpack/webpack,SimenB/webpack,jescalan/webpack,NekR/webpack,ts-webpack/webpack,EliteScientist/webpack,jescalan/webpack,ts-webpack/webpack,SimenB/webpack,g0ddish/webpack,SimenB/webpack,SimenB/webpack,rlugojr/webpack,webpack/webpack,webpack/webpack