# Vitest v0.30.0 — Release & Upgrade Intelligence
- **Product:** Vitest (https://vitest.dev)
- **Version:** v0.30.0
- **Released:** Apr 09, 2023
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/vitest/updates/v0.30.0/
## Executive Summary (TL;DR)
Vitest v0.30.0. Source highlight: 🚨 Breaking Changes
## Breaking Changes & Deprecations
- 🚨 Breaking Changes - Remove tinyspy internal properties on Vitest spies - by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3069 [(2f1dc)](https://github.com/vitest-dev/vitest/commit/2f1dc5ce)
## New Features
- Add workspace support - by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3103 (b9d1a)
- Experimental optimizer introduced in 0.29.0 is temporarily disabled.
- Gzip html reporter's metadata - by @7rulnik in https://github.com/vitest-dev/vitest/issues/3113 (7856e)
- Add chai config - by @btea in https://github.com/vitest-dev/vitest/issues/3066 (6fcba)
- **snapshot**: Introduce `toMatchFileSnapshot` and auto queuing expect promise - by @antfu in https://github.com/vitest-dev/vitest/issues/3116 (bdc06)
## Bug Fixes
- Resolve reporters passed down to the CLI relative to the running directory - by @sheremet-va in https://github.com/vitest-dev/vitest/issues/3097 (93c7e)
- Don't show "diff" in "serialized error" section - by @sheremet-va (326b2)
- Convert '--single-thread' and '--inspect' cli args to boolean - by @AriPerkkio in https://github.com/vitest-dev/vitest/issues/3111 (83a9a)
- Stack trace point to incorrect file - by @ChenKS12138 and @sheremet-va in https://github.com/vitest-dev/vitest/issues/3004 and https://github.com/vitest-dev/vitest/issues/3115 (5cee4)
- Run benchmarks sequentially - by @thecodrr in https://github.com/vitest-dev/vitest/issues/2004 and https://github.com/vitest-dev/vitest/issues/3151 (430b4)