module.exports = api => { const isTest = api.env('test'); const preset = ["@babel/preset-env"]; const testPreset = ["@babel/preset-env", {targets: {node: 'current'}}]; const plugins = [ "@babel/plugin-syntax-dynamic-import", "@babel/plugin-transform-react-jsx", "@babel/plugin-syntax-function-bind", "@babel/plugin-proposal-function-bind", "@babel/plugin-proposal-class-properties" ] return { "presets": [isTest ? testPreset: preset], "plugins": plugins } }