.babelrc.js
module.exports = {
presets: [
"@babel/preset-react",
[
"@babel/preset-env",
{
"targets": {
"chrome": 52,
"browsers": [
"last 2 versions",
"safari >= 7"
]
}
}
]
],
plugins: [
"@babel/plugin-proposal-export-default-from",
"@babel/plugin-proposal-class-properties"
],
env: {
test: {
sourceMaps: 'both'
}
}
}