# Bun bun-v0.0.72 — Release & Upgrade Intelligence
- **Product:** Bun (https://bun.sh)
- **Version:** bun-v0.0.72
- **Released:** Mar 17, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/bun/updates/bun-v0.0.72/

## Executive Summary (TL;DR)
Bun bun-v0.0.72. Source highlight: This release adds source maps for JS output, several web APIs to bun.js (and `HTMLRewriter`), parser support for ES2022 syntax, improves parsing speed for long strings, makes `bun dev` 10% faster on macOS and fixes a lot of crashes.

## Improvements
- Improve HMR performance when multiple tabs are open (pooling websocket threads)

## Bug Fixes
- Fixed UTF-8 bug with console.`{time, count, timeEnd, profile, profileEnd, count, countReset}`
- Fix Program terminates with pending promises #122
- Fix a memory leak with microtasks - d0a9b404c39842755b452b93547ee85fe2b368ad
- Fix bug causing async wasm compilation to never run - 7b8113c7c70bb3bf6916404123e1c30c233a2d6c
- Fix crash on macOS that sometimes occurred when closing the tab
- Fixed several memory leaks and cases where bun would sometimes segfault