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