refactor(ES6): upgrade AggressiveSplittingPlugin to ES6 (#3743)
refactor(ES6): upgrade AggressiveSplittingPlugin to ES6 (#3743)

* refactor(ES6): upgrade AggressiveSplittingPlugin to ES6

* refactor(ES6): remove this hack and fix this value in arrow function

pugnascotia/webpack,EliteScientist/webpack,cesarandreu/webpack,nkzawa/webpack,SimenB/webpack,rlugojr/webpack,ts-webpack/webpack,g0ddish/webpack,webpack/webpack,webpack/webpack,g0ddish/webpack,cesarandreu/webpack,ts-webpack/webpack,jescalan/webpack,nkzawa/webpack,ts-webpack/webpack,webpack/webpack,pugnascotia/webpack,rlugojr/webpack,ts-webpack/webpack,cesarandreu/webpack,g0ddish/webpack,NekR/webpack,pugnascotia/webpack,SimenB/webpack,NekR/webpack,rlugojr/webpack,jescalan/webpack,nkzawa/webpack,SimenB/webpack,jescalan/webpack,SimenB/webpack,webpack/webpack,EliteScientist/webpack