Breaking Changes

• Bump typescript from 3.9.10 to 5.3.3 by @thegedge in https://github.com/mobxjs/mobx-state-tree/pull/2146
• Eliminate NonEmptyObject by @thegedge in https://github.com/mobxjs/mobx-state-tree/pull/2152
• Improved typing for union types by @thegedge in https://github.com/mobxjs/mobx-state-tree/pull/2151
• fix #1530 array clear replace should produce one patch by @BrianHung in https://github.com/mobxjs/mobx-state-tree/pull/2073
• Feat/has env and getenv changes by @t49tran in https://github.com/mobxjs/mobx-state-tree/pull/2163

Features

• We added a new feature, hasEnv, to support https://github.com/mobxjs/mobx-state-tree/pull/2163

Fixes

• Union types will now be fixed, but this also may break TypeScript for some users
• Array operations produce condensed patches when we can, but this may break for some users who relied on the patch generation as it was
• Fix: do not mutate properties object by model constructor: by @dangreen in https://github.com/mobxjs/mobx-state-tree/pull/2176
• Fix getMembers duplicating actions into views by @evinosheaforward in https://github.com/mobxjs/mobx-state-tree/pull/2174

Tests

• Test: convert to bun:test for tests, remove codecov by @coolsoftwaretyler in https://github.com/mobxjs/mobx-state-tree/pull/2149

Docs

• Docs/update docs homepage by @coolsoftwaretyler in https://github.com/mobxjs/mobx-state-tree/pull/2141
• docs: fix typos in docs update by @coolsoftwaretyler in https://github.com/mobxjs/mobx-state-tree/pull/2142
• Docs: add comparison between React Context/Reducer by @coolsoftwaretyler in https://github.com/mobxjs/mobx-state-tree/pull/2158
• Docs: add recipe for mst-form-type by @sherlockwang in https://github.com/mobxjs/mobx-state-tree/pull/2168
• Docs: fix broken link by @kylemeenehan in https://github.com/mobxjs/mobx-state-tree/pull/2165

Community/Developer changes

• Bump typescript from 3.9.10 to 5.3.3 by @thegedge in https://github.com/mobxjs/mobx-state-tree/pull/2146
• Chore/use bun as a package manager and script runner by @coolsoftwaretyler in https://github.com/mobxjs/mobx-state-tree/pull/2148

Full Changelog: https://github.com/mobxjs/mobx-state-tree/compare/v5.4.1...v6.0.0-pre.3