These are now enabled by default:
- objectRestSpread (2018)
- asyncGenerators (2018)
- optionalCatchBInding (2019)
- jsonStrings (2019)
TODO (after this commit):
- [ ] Deprecate the `@babel/plugin-syntax-*` packages.
- [ ] Deprecate the `@babel/plugin-proposal-*` packages.
- [ ] Create the `@babel/plugin-transform-*` packages.
* Update parser whitespace for clarity
Has the nice benefit of not requiring a charCode to String conversion.
* Remove test262 exceptions
Per https://github.com/tc39/ecma262/pull/1218#issuecomment-395340891,
ECMA262 follows whatever the latest Unicode version specifies for Zs
Space_Separator category. MONGOLIAN VOWEL SEPARATOR was moved to the Cf
Other_Format category in Unicode 8.