module.exports = { presets: [ // https://github.com/vuejs/vue-cli/tree/master/packages/@vue/babel-preset-app '@vue/cli-plugin-babel/preset' ], 'env': { 'development': { // babel-plugin-dynamic-import-node plugin only does one thing by converting all import() to require(). // This plugin can significantly increase the speed of hot updates, when you have a large number of pages. 'plugins': ['dynamic-import-node'] } }, plugins: [ '@babel/plugin-proposal-optional-chaining', '@babel/plugin-proposal-nullish-coalescing-operator' ] }