2019年10月のTC39 meetingでStageが変更されたproposals

変更前	変更後	proposal	備考
N/A	1	Making mapping over Objects more concise
N/A	1	Readonly Collections
N/A	1	Support for Distributed Promise Pipelining
N/A	1	Wavy Dot: Syntactic Support for Promise Pipelining
N/A	1	OOM Fails Fast
0	1	Declarations in Conditionals
0	1	Record & Tuple
1	2	Map.prototype.upsert
2	3	for-in mechanics
2	3	String.prototype.replaceAll
2	3	Intl.DisplayNames	ecma402
2	3	Promise.any
3	4	globalThis
0	N/A	Infix Bang

変更履歴