The first four rows have reached Stage 4 for ES2027; the last two were at Stage 3 in September 2026.
| Feature | Example | Section |
|---|---|---|
| Temporal | Temporal.Now.instant() | 6.18.4 |
| Explicit resource management | using file = open(path); | 6.11.3 |
| Atomics.pause() | Atomics.pause(i) | 6.14.4 |
| Joint iteration | Iterator.zip([a, b]) | 6.16.6 |
| import defer | import defer * as ns from 'm' | 6.2.5 |
| Iterator chunking | iter.chunks(2) | 6.16.5 |