Mobx Versions Save

Patch Changes

• e63c2df0 #3443 Thanks @urugator! - changeset for PR #3423: deprecate no-anonymous-observer

Patch Changes

• 63698d06 #3427 Thanks @RyanCavanaugh! - Apply 'object' constraint where required

Patch Changes

• bbcb12dc #3434 Thanks @urugator! - Support re-mounting of class components. Fixes #3395: observer not working with React@18 <StrictMode>.

Minor Changes

• 8e204c7b #3409 Thanks @Nokel81! - Remove observable.box type inconsistancy

Minor Changes

• 1470b8e4 #3404 Thanks @pixelkritzel! - this.context is observable if static contextType is set

Minor Changes

• 4c5e75cd #3382 Thanks @iChenLei! - replace the deprecated react type definition with recommended type definition

• bd4b70d8 #3387 Thanks @mweststrate! - Added experimental / poor man's support for React 18. Fixes #3363, #2526. Supersedes #3005

  • Updated tests, test / build infra, peerDependencies to React 18
  • [breaking icmw upgrading to React 18] Already deprecated hooks like useMutableSource will trigger warnings in React 18, which is correct and those shouldn't be used anymore.
  • [breaking icmw upgrading to React 18] When using React 18, it is important that act is used in unit tests around every programmatic mutation. Without it, changes won't propagate!
  • The React 18 support is poor man's support; that is, we don't do anything yet to play nicely with Suspense features. Although e.g. startTransition basically works, MobX as is doesn't respect the Suspense model and will always reflect the latest state that is being rendered with, so tearing might occur. I think this is in theoretically addressable by using useSyncExternalStore and capturing the current values together with the dependency tree of every component instance. However that isn't included in this pull request 1) it would be a breaking change, whereas the current change is still compatible with React 16 and 17. 2) I want to collect use cases where the tearing leads to problems first to build a better problem understanding. If you run into the problem, please submit an issue describing your scenario, and a PR with a unit tests demonstrating the problem in simplified form. For further discussion see #2526, #3005

Patch Changes

• Updated dependencies [4c5e75cd, bd4b70d8]:
  • [email protected]

Minor Changes

• 4c5e75cd #3382 Thanks @iChenLei! - replace the deprecated react type definition with recommended type definition

• bd4b70d8 #3387 Thanks @mweststrate! - Added experimental / poor man's support for React 18. Fixes #3363, #2526. Supersedes #3005

  • Updated tests, test / build infra, peerDependencies to React 18
  • [breaking icmw upgrading to React 18] Already deprecated hooks like useMutableSource will trigger warnings in React 18, which is correct and those shouldn't be used anymore.
  • [breaking icmw upgrading to React 18] When using React 18, it is important that act is used in unit tests around every programmatic mutation. Without it, changes won't propagate!
  • The React 18 support is poor man's support; that is, we don't do anything yet to play nicely with Suspense features. Although e.g. startTransition basically works, MobX as is doesn't respect the Suspense model and will always reflect the latest state that is being rendered with, so tearing might occur. I think this is in theoretically addressable by using useSyncExternalStore and capturing the current values together with the dependency tree of every component instance. However that isn't included in this pull request 1) it would be a breaking change, whereas the current change is still compatible with React 16 and 17. 2) I want to collect use cases where the tearing leads to problems first to build a better problem understanding. If you run into the problem, please submit an issue describing your scenario, and a PR with a unit tests demonstrating the problem in simplified form. For further discussion see #2526, #3005

Minor Changes

• 767baff0 #3338 Thanks @kubk! - Replace any with a generic in Set methods

Patch Changes

• 2caf7e1a #3316 Thanks @urugator! - requiresObservable always takes precedence over global reactionRequiresObservable

Patch Changes

• d6fa9a19 #3306 Thanks @urugator! - fix missing type inferrence of observe and intercept for arrays