CHANGELOG.md

5.0.0

• New Violations: Component names now need to start with an uppercase letter instead of a non-lowercase letter. This means _Button or _component are no longer valid. (@kassens) in #25162

• Consider dispatch from useActionState stable. (@eps1lon in #29665)
• Add support for ESLint v9. (@eps1lon in #28773)
• Accept as expression in callback. (@StyleShit in #28202)
• Accept as expressions in deps array. (@StyleShit in #28189)
• Treat React.use() the same as use(). (@kassens in #27769)
• Move use() lint to non-experimental. (@kassens in #27768)
• Support Flow as expressions. (@cpojer in #27590)
• Allow useEffect(fn, undefined). (@kassens in #27525)
• Disallow hooks in async functions. (@acdlite in #27045)
• Rename experimental useEvent to useEffectEvent. (@sebmarkbage in #25881)
• Lint for presence of useEvent functions in dependency lists. (@poteto in #25512)
• Check useEvent references instead. (@poteto in #25319)
• Update RulesOfHooks with useEvent rules. (@poteto in #25285)

4.6.0

4.5.0

• Fix false positive error with large number of branches. (@scyron6 in #24287)

4.4.0

• No changes, this was an automated release together with React 18.

4.3.0

• Support ESLint 8. (@MichaelDeBoey in #22248)
• Fix a crash with an empty effect. (@ChrisRu in #20385)
• Improve the error message. (@callmetwan in #20692)
• Handle optional chained methods as dependency. (@AriPerkkio in #20247)
• Assume the new useTransition signature in the rule. (@rickhanlonii in #20976)

4.2.0

• No changes, this was an automated release together with React 17.

4.1.2

• Fix a crash with the TypeScript 4.x parser. (@eps1lon in #19815)

4.1.1

• Improve support for optional chaining. (@pfongkye in #19680)
• Fix a false positive warning for TypeScript parameters. (@NeoRaider in #19751)

4.1.0

• New Violations: Warn when dependencies change on every render. (@captbaritone in #19590)

4.0.8

• Fixes TypeScript typeof annotation to not be considered a dependency. (@delca85 in #19316)

4.0.7

• Fixes an overly coarse dependency suggestion. (@gaearon in #19313)

4.0.6

• Fix crashes and other bugs related to optional chaining. (@gaearon in #19273 and #19275)

4.0.5

• Fix a crash when the dependency array has an empty element. (@yeonjuan in #19145)
• Fix a false positive warning that occurs with optional chaining. (@fredvollmer in #19061)

4.0.4

• Fix a false positive warning that occurs with optional chaining. (@fredvollmer in #19061)
• Support nullish coalescing and optional chaining. (@yanneves in #19008)

4.0.3

• Remove the heuristic that checks all Hooks ending with Effect due to too many false positives. (@gaearon in #19004)

4.0.2

• Prevent Hooks that have Effect in the middle from being considered effects. (@surgeboris in #18907)

4.0.1

• Declare support for ESLint 7. (@MichaelDeBoey in #18878)

4.0.0

• New Violations: Consider PascalCase.useFoo() calls as Hooks. (@cyan33 in #18722)
• New Violations: Check callback body when it's not written inline. (@gaearon in #18435)
• New Violations: Check dependencies for all Hooks ending with Effect. (@airjp73 in #18580)
• Add a way to enable the dangerous autofix. (@gaearon in #18437)
• Offer a more sensible suggestion when encountering an assignment. (@Zzzen in #16784)
• Consider TypeScript casts of useRef as constant. (@sophiebits in #18496)
• Add documentation. (@ghmcadams in #16607)

3.0.0

• New Violations: Forbid calling Hooks from classes. (@ianobermiller in #18341)
• Add a recommended config. (@SimenB in #14762)

2.5.0

• Fix a misleading error message in loops. (@M-Izadmehr in #16853)

2.4.0

• New Violations: Run checks for functions passed to forwardRef. (@dprgarner in #17255)
• New Violations: Check for ref usage in any Hook containing the word Effect. (@gaearon in #17663)
• Disable dangerous autofix and use ESLint Suggestions API instead. (@wdoug in #17385)

2.0.0

• New Violations: Forbid calling Hooks at the top level. (@gaearon in #16455)
• Fix a crash when referencing arguments in arrow functions. (@hristo-kanchev in #16356)

1.x

The 1.x releases aren’t noted in this changelog, but you can find them in the commit history.