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Only warn in case the fourth argument is a function #16543

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merged 1 commit into from
Aug 22, 2019
Merged

Only warn in case the fourth argument is a function #16543

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2 changes: 1 addition & 1 deletion packages/react-reconciler/src/ReactFiberHooks.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1122,7 +1122,7 @@ function dispatchAction<S, A>(

if (__DEV__) {
warning(
arguments.length <= 3,
typeof arguments[3] !== 'function',
"State updates from the useState() and useReducer() Hooks don't support the " +
'second callback argument. To execute a side effect after ' +
'rendering, declare it in the component body with useEffect().',
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