Move to TS

CONTRIBUTING.md

@@ -11,8 +11,8 @@ series [How to Contribute to an Open Source Project on GitHub][egghead]
 2.  Run `npm run setup` to install dependencies and run validation
 3.  Create a branch for your PR with `git checkout -b pr/your-branch-name`
 
-> Tip: Keep your `main` branch pointing at the original repository and make
-> pull requests from branches on your fork. To do this, run:
+> Tip: Keep your `main` branch pointing at the original repository and make pull
+> requests from branches on your fork. To do this, run:
 >
 > ```
 > git remote add upstream https://github.com/testing-library/dom-testing-library.git
@@ -21,10 +21,10 @@ series [How to Contribute to an Open Source Project on GitHub][egghead]
 > ```
 >
 > This will add the original repository as a "remote" called "upstream," Then
-> fetch the git information from that remote, then set your local `main`
-> branch to use the upstream main branch whenever you run `git pull`. Then you
-> can make all of your pull request branches based on this `main` branch.
-> Whenever you want to update your version of `main`, do a regular `git pull`.
+> fetch the git information from that remote, then set your local `main` branch
+> to use the upstream main branch whenever you run `git pull`. Then you can make
+> all of your pull request branches based on this `main` branch. Whenever you
+> want to update your version of `main`, do a regular `git pull`.
 
 ## Committing and Pushing changes