.babelrc

{
  "presets": [
    // Use the latest JavaScript without needing to micromanage which syntax
    // transforms and browser polyfills are needed by your target environment.
    //
    // Uses .browserslistrc to specify target environments.
    "@babel/preset-env",

    // Load React specific plugins
    "@babel/preset-react"
  ],

  "plugins": [
    // Babel uses very small helpers for common functions such as _extend. By
    // default this will be added to every file that requires it. This
    // duplication is sometimes unnecessary, especially when your application
    // is spread out over multiple files.
    "@babel/plugin-transform-runtime",

    // Can speed up reconciliation and reduce garbage collection pressure
    // by hoisting React elements to the highest possible scope,
    // preventing multiple unnecessary reinstantiations.
    "@babel/plugin-transform-react-constant-elements",

    // Remove data-test-id attributes from your production builds.
    "babel-plugin-jsx-remove-data-test-id",

    // Add displayName to React.createClass calls
    "@babel/plugin-transform-react-display-name"
  ]
}