I know this is an over asked question regarding useEffect
and useState
infinite loops. I have read almost every question about it and also searched over the internet in order to try to fix it before posting here. The most recent article that I read was this one .
Before I read the article my useState
function inside useEffect
was without the useState
's callback, so it was what I thought which was causing the problem. But after moving it from this:
setNotifications({
...notifications,
[type]: {
...notifications[type],
active: portfolioSettings[type],
payload: {
...notifications[type].payload,
[pKey]: portfolioSettings[pKey],
},
},
});
to this:
setNotifications((currState) => ({
...currState,
[type]: {
...currState[type],
active: portfolioSettings[type],
payload: {
...currState[type].payload,
[pKey]: portfolioSettings[pKey],
},
},
}));
Unfortunately the infinite loop persists. Here are all useEffect
functions (the last one is the one causing the infinite looping) that I'm using in this component.
// Set default selected portfolio to the active portfolio
useEffect(() => {
let mounted = true;
const setPortfolioData = () => {
if (activePortfolio) {
const portfolioId = activePortfolio.id;
const portfolioName = activePortfolio.name;
setSelectedPortfolio({
portfolioId,
portfolioName,
});
}
};
if (mounted) setPortfolioData();
return () => {
mounted = false;
};
}, [activePortfolio]);
// Set all the categories if no category is set
useEffect(() => {
let mounted = true;
if (mounted && allCvmCategories) {
const allCvmCategoriesNames = allCvmCategories.map((c) => c);
setNotifications((currState) => ({
...currState,
isCvmNotificationEnabled: {
...currState.isCvmNotificationEnabled,
payload: {
...currState.isCvmNotificationEnabled.payload,
cvmCategories: allCvmCategoriesNames,
},
},
}));
setIsCvmCategoriesReady(true);
}
return () => {
mounted = false;
};
}, [allCvmCategories]);
// THE ONE WHICH IS CAUSING INFINITE LOOPING
// THE notificationsTypes AND notificationsInitialState
// ARE DECLARED IN THE ROOT OF THE JSX FILE
// OUT OF THE FUNCTIONAL COMPONENT
useEffect(() => {
let mounted = true;
if (
mounted &&
isCvmCategoriesReady &&
allPortfolios &&
selectedPortfolio.portfolioId
) {
const { portfolioId } = selectedPortfolio;
const portfolioSettings = allPortfolios[portfolioId].settings;
if (portfolioSettings) {
notificationsTypes.forEach((type) => {
if (Object.prototype.hasOwnProperty.call(portfolioSettings, type)) {
const { payloadKeys } = notificationsInitialState[type];
if (payloadKeys.length > 0) {
payloadKeys.forEach((pKey) => {
if (
Object.prototype.hasOwnProperty.call(portfolioSettings, pKey)
) {
setNotifications((currState) => ({
...currState,
[type]: {
...currState[type],
active: portfolioSettings[type],
payload: {
...currState[type].payload,
[pKey]: portfolioSettings[pKey],
},
},
}));
}
});
} else {
setNotifications((currState) => ({
...currState,
[type]: {
...currState[type],
active: portfolioSettings[type],
},
}));
}
}
});
}
}
return () => {
mounted = false;
};
}, [allPortfolios, isCvmCategoriesReady, selectedPortfolio]);
Thanks for the responses. I have found the problem, it was with the hook that I was using (SWR) for fetching. Making the allPortfolios
change all the time. I have fixed it wrapping into a new custom hook.
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