ECMAScript proposal updates @ 2021-01

The changes of proposal’s status @ 80th meeting of Ecma TC39

New Proposals

Proposal	Stage
`async do` expressions	1
Class Brand Checks	1
Adopting Unicode behavior for set notation in regular expressions	1
Escaping Strings for RegExps	1
Array find from last	1
defer module import eval	1

Proposal	From	To
JSON Modules	2	3
Ergonomic brand checks for Private Fields	2	3
Module Blocks	1	2