Add support for flow in babel

README.md

@@ -111,6 +111,10 @@ module.exports = Object.assign(jestConfig, {
 > configuring things to make it less magical and more straightforward. Extending
 > can take place on your terms. I think this is actually a great way to do this.
 
+### Flow support
+
+If the `flow-bin` is a dependency on the project the `@babel/preset-flow` will automatically get loaded you only need to install it manually by running `npm install --save-dev @babel/preset-flow`
+
 ## Inspiration
 
 This is inspired by `react-scripts`.

src/config/babelrc.js

@@ -49,6 +49,12 @@ module.exports = () => ({
         {pragma: isPreact ? 'React.h' : undefined},
       ],
     ),
+    ifAnyDep(
+      ['flow-bin'],
+      [
+        require.resolve('@babel/preset-flow'),
+      ],
+    )
   ].filter(Boolean),
   plugins: [
     [require.resolve('@babel/plugin-transform-runtime'), { useESModules: treeshake && !isCJS }],