ECMAScript proposal updates @ 2020-06

The changes of proposal’s status @ 76th meeting of Ecma TC39

New Proposals

Proposal	Stage
Import Attributes	2
Built In Modules (aka JS Standard Library)	1
Symbols as WeakMap keys	1
Deep Path Properties in Record Literals	1
Restrict subclassing support in built-in methods	1
Array Equality	1
`.item()`	1
Async Context	0

Proposal	From	To
`String.prototype.replaceAll`	3	4
Ergonomic brand checks for Private Fields	1	2