Make sure these boxes are checked! 📦✅

- [ ] You have the latest version of `rustfmt` installed
```bash
$ rustup component add rustfmt
```
- [ ] You ran `cargo fmt` on the code base before submitting
- [ ] You reference which issue is being closed in the PR text

✨✨ 😄 Thanks so much for contributing to wasm-pack! 😄 ✨✨
