module.exports = { presets: [ ['@vue/cli-plugin-babel/preset', { useBuiltIns: 'usage', corejs: 3, targets: { ie: '10', chrome: '58', firefox: '60', safari: '11', edge: '16' } }] ], plugins: [ '@babel/plugin-proposal-class-properties', '@babel/plugin-proposal-optional-chaining', '@babel/plugin-transform-runtime' ] }