* Use isIdentifierChar instead of regex for toIdentifier
* Apply suggestions from code review
Co-authored-by: Huáng Jùnliàng <jlhwung@gmail.com>
* Undo dep
* Update packages/babel-types/test/converters.js
* Add testcase starting with a number
* Add test for non-ascii starting character
Co-authored-by: Huáng Jùnliàng <jlhwung@gmail.com>