message: Update webpack js rule
diff: @@ -11,7 +11,7 @@ exports.onCreateWebpackConfig = ({actions, plugins, loaders, getConfig}) => {
  {
  // The new configuration is based off the original...
  ...loaders.js(),
  - test: /\.jsx?$/,
  + test: /\.(ts|js)x?$/,
  exclude: (modulePath) => /node_modules/.test(modulePath),
  // ...except that we want to run Primer React through webpack as well.
  // By default, Gatsby won't use the define plugin we added above on Primer React.
  