### Bug fixes

Fix an issue where tokenizing (without parsing) an object literal with a property named `class` or `function` could, in some circumstance, put the tokenizer into an invalid state.

Fix an issue where a slash after a call to a propery named the same as some keywords would be tokenized as a regular expression.

### New features

Upgrade to Unicode 15.1.

Use a set of new, much more precise, TypeScript types.