| Feature | Example | Section |
|---|---|---|
| Array.fromAsync() | Array.fromAsync(stream) | 6.13.1 |
| Error.isError() | Error.isError(x) | 6.4.3 |
| Uint8Array Base64 and hex | bytes.toBase64() | 6.14.5 |
| Math.sumPrecise() | Math.sumPrecise([0.1, 0.2]) | 6.10.6 |
| Iterator.concat(), upsert | map.getOrInsert(k, []) | 6.16.6, 6.15.5 |
| JSON.parse source access | (k, v, { source }) => source | 6.3.2 |
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ES2026
ECMAScript 2026 (ES17)