This release drops our dependency on the core redux package by inlining bindActionCreators, and tweaks useSelector to ensure that selectors aren't run an extra time while re-rendering.
Changelog
Redux Dependency Removal
React-Redux has always imported the bindActionCreators utility from the core redux package for use in connect. However, that meant that we had to have a peer dependency on redux, and this was the only reason we actually required that redux be installed. This became more annoying with the arrival of Redux Toolkit, which has its own dependency on redux internally, and thus users typically saw peer dependency warnings saying that "redux isn't listed as a dependency in your app".
Code reuse across separate packages is a great thing, but sometimes the right thing to do is duplicate code. So, we've inlined bindActionCreators directly into React-Redux, and we've completely dropped the dependency on Redux. This means that React-Redux will no longer produce a peerDep warning when used with Redux Toolkit, and <Provider> and connect really only need a Redux-store-compatible value to work right.
useSelector Fixes
Users reported that useSelector was re-running selector functions again unnecessarily while rendering after a dispatch. We've tweaked the logic to ensure that doesn't happen.
useSelector also now has checks in development to ensure that selector and equalityFn are functions.
This release improves behavior in useSelector by returning the existing reference if the newly returned selector result passes the equality check, and adds a hard dependency on the @types/react-redux package to ensure TS users always have the typedefs installed.
Changes
useSelector Results Reuse
Issue #1654 reported that useSelector was returning new references from a selector even if the equality comparison function returned true. This is because the equality check was only ever being performed during the action dispatch process.
We now run the equality comparison against the value calculated by the selector while rendering, and return the existing reference for consistency if the old and new values are considered equal. This should improve some cases where further derived values where being recalculated unnecessarily.
TS Types Now Included
React-Redux has always been written in plain JS, and the typedefs maintained by the community in DefinitelyTyped. We plan on eventually rewriting the library in TypeScript in a future React-Redux v8 release, but until then the types can stay in DT.
However, having to always manually install @types/react-redux is annoying, and some users have gotten confused by that. This release adds a hard dependency on @types/react-redux, so that if you install react-redux, you automatically get the types as well. This should simplify the process for TS users.
Docs Updates
We've made several docs updates recently:
Renamed "Quick Start" to "Getting Started" and "Static Typing" to "Usage with TypeScript"
Dropped the docs API versioning setup, as the legacy API version docs pages were rarely viewed and the versioning setup confused docs contributors
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Bumps react-redux from 5.1.2 to 7.2.4.
Release notes
Sourced from react-redux's releases.
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Commits
86e962e7.2.4b3b4e8bdocs: add link to source in getting-started.md (#1713)994b390Removed Useless Symbol - Docs (#1712)95e3287fix:displayName error displayed in development tool (#1711)5b4b576Removed useless semicolon : Docs - Connect.md (#1710)8913607Remove wrapActionCreators (#1709)df36f4eVerify that selector and equalityF of useSelector are functions (#1706)f4ea60cImport bindActionCreators from redux (#1705)50b60e4Bump y18n from 4.0.0 to 4.0.1 (#1703)c945868Remove unused useState call in getting-started.md example (#1702)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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