const ContextReplacementPlugin = require('webpack/lib/ContextReplacementPlugin')
const CommonsChunkPlugin = require('webpack/lib/optimize/CommonsChunkPlugin')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const ContextReplacementPlugin = require('webpack/lib/ContextReplacementPlugin')
const CommonsChunkPlugin = require('webpack/lib/optimize/CommonsChunkPlugin')
const CopyWebpackPlugin = require('copy-webpack-plugin')