Tracking: handling JavaScript files

> Tracked in the readme already but made an issue since not many people read the readme

We should use jscodeshift/babel-codemod for this.

- [ ] Upgrade a js config: `.babelrc.js`, `babel.config.js`, a preset written in JS, or a babel config written via `@babel/core` options or `babel-loader`.
- [ ] Upgrade any tools that use Babel directly
- [ ] import statements like `babel-types` to `@babel/types`
- [ ] API removals/deprecations/changes

Start by reviewing the README’s tracking entry and the handling for JavaScript files in the upgrade tool. Check the listed Babel configuration forms and direct Babel-tool usage, including babel-types imports and API changes. Done means the checklist cases are handled through jscodeshift or babel-codemod.

Written by the indexing model from the issue text.