const merge = require('webpack-merge'); const webpackConfig = require('./webpack.config'); const SourceMapDevToolPlugin = require('webpack/lib/SourceMapDevToolPlugin'); module.exports = merge(webpackConfig, { mode: 'development', devtool: 'eval-source-map', plugins: [ new SourceMapDevToolPlugin({ filename: '[file].map', exclude: [/node_modules/, /images/, /spritemap/, /svg-sprites/], }) ] });