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Bun v1.3.7

UpdateUnverifiedAdded Sep 24, 2026

Fixes 91 issues (addressing 243 ๐Ÿ‘). 50% faster `Buffer.from(array)`, 35% faster async/await, 3x faster `array.flat()`, 90% faster `padStart`/`padEnd` via JSC upgrade. New: `Bun.JSON5`, `Bun.JSONL`, `Bun.wrapAnsi()` (33-88x faster than wrap-ansi npm), `--heap-prof-md`, `--cpu-prof-md`, `node:inspector` Profiler API, `replMode` for `Bun.Transpiler`.

Topics: Developer tools, Performance

Bun's release notes

More Bun releases

Every Bun release
DateRelease
Jan 29Bun v1.3.8unverified
Update
Feb 8Bun v1.3.9unverified
Update
Jan 13Bun v1.3.6unverified
Update
Feb 26Bun v1.3.10unverified
Update
Dec 17Bun v1.3.5unverified
Update
Mar 18Bun v1.3.11unverified
Update
Dec 6Bun v1.3.4unverified
Update
Dec 2Bun is joining Anthropicunverified
Update

Also shipped on Jan 27, 2026

Bun in January 2026

Sources: each vendor's own release notes, changelogs and GitHub releases, read daily to monthly by how often it posts. Logos via logo.dev; trademarks belong to their owners.

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