const MiniCssExtractPlugin = require("mini-css-extract-plugin"); exports.onCreateWebpackConfig = ({ actions, stage, getConfig }) => { if (stage === "build-javascript") { const config = getConfig(); const index = config.plugins.findIndex((plugin) => { return plugin.constructor.name === "MiniCssExtractPlugin"; }); config.plugins[index] = new MiniCssExtractPlugin({ ignoreOrder: true }); actions.replaceWebpackConfig(config); } };