Using `react-refresh/babel` 0.4.0 is giving me this error on a large number of files:

```
ERROR in ../orbit-app/src/hooks/useStores.ts
Module build failed (from ../node_modules/babel-loader/lib/index.js):
TypeError: Cannot read property '0' of undefined
    at Function.get (/Users/nw/projects/motion/orbit/node_modules/@babel/traverse/lib/path/index.js:115:33)
    at NodePath.unshiftContainer (/Users/nw/projects/motion/orbit/node_modules/@babel/traverse/lib/path/modification.js:191:31)
    at PluginPass.exit (/Users/nw/projects/motion/orbit/node_modules/react-refresh/cjs/react-refresh-babel.development.js:546:28)
```

I narrowed down that file to the simplest thing that causes it:

```
import { useContext } from 'react'

export default () => useContext()
```

_Originally posted by @natew in https://github.com/facebook/react/issues/16604#issuecomment-528708174_
return;
        }
        seenForRegistration.add(node);
        
        const declPaths = path.get('declarations');
        if (declPaths.length !== 1) {
          return;
        }
        const declPath = declPaths[0];
        const inferredName = declPath.node.id.name;
        findInnerComponents(
          inferredName,
          declPath,
          (persistentID, targetExpr, targetPath) => {
            if (targetPath === null) {
              
              
              
              
              return;
            }
            const handle = createRegistration(programPath, persistentID);
            if (
              (targetExpr.type === 'ArrowFunctionExpression' ||
                targetExpr.type === 'FunctionExpression') &&
              targetPath.parent.type === 'VariableDeclarator'
            ) {