Scenario these can be used:

httpError is cutting the execution of my useEffect instantly.

If the httpError variable is cutting your useEffect right away, it likely means that the httpError variable is being set immediately and the effect is only running once before being skipped.

One possible reason for this is that the httpError variable is being set synchronously, before the useEffect hook has a chance to run. To fix this, you can make sure that the httpError variable is set asynchronously, using setTimeout or setImmediate.

Another reason could be that the httpError variable is being set to a truthy value initially, and the effect is only running on the first render of the component. To fix this, you can check if httpError is truthy before running the effect, or you can use the useEffect hook with an empty dependency array [] that runs only on the first render of the component.

useEffect(() => {
    if(httpError){
        // Do something with httpError
    }
}, []);

It is also possible that the httpError is defined inside the component and it's not passed as a prop to the component, so the component is not aware of the error and cannot re-render with the error message. To fix this, you can pass the httpError variable as a prop to the component and check for it inside the component.

It's hard to know the exact issue without more information about the component and how the httpError variable is being set, but the above suggestions should help you identify and resolve the problem.

Using setTimeout

o set the httpError variable asynchronously after the useEffect hook has run, you can use JavaScript's setTimeout function.

useEffect(() => {
    // Do something
    setTimeout(() => {
        setHttpError("Error message")
    }, 1000);
}, []);

In this example, the setTimeout function will wait for 1000 milliseconds (1 second) before setting the httpError variable. This will give the useEffect hook a chance to run and perform any necessary operations before the error is set.

You can adjust the timeout to suit your specific needs, and you can also use other functions like setImmediate or setInterval for different use cases.

It's also important to note that if you are using the httpError inside the component, you should include it as a dependency in the useEffect hook, so that it re-renders every time httpError is changing.

It's also important to consider that you should clear the httpError variable after a certain time or when the error is resolved, otherwise the component will keep re-rendering with the error message. You can use the clearTimeout function to clear the timeout.

let timeoutId = null;

useEffect(() => {
    // Do something
    timeoutId = setTimeout(() => {
        setHttpError("Error message")
    }, 1000);
    return () => clearTimeout(timeoutId);
}, []);

This way the timeout will be cleared when the component is unmounting and the error message will not be displayed anymore.

Using setImmediate

setImmediate is a function that allows you to schedule a callback function to be executed as soon as possible after the current script has finished executing. It is similar to setTimeout but it schedules the callback to be executed at the end of the current event loop, rather than after a specified delay.

You can use setImmediate to set the httpError variable asynchronously after the useEffect hook has run.

useEffect(() => {
    // Do something
    setImmediate(() => {
        setHttpError("Error message")
    });
}, []);

In this example, the setImmediate function will schedule the callback function to be executed as soon as possible after the current script has finished executing. This will give the useEffect hook a chance to run and perform any necessary operations before the error is set.

You can also use setImmediate to clear the error message after the error is resolved.

let immediateId = null;

useEffect(() => {
    // Do something
    immediateId = setImmediate(() => {
        setHttpError("Error message")
    });
    return () => clearImmediate(immediateId);
}, []);

Note that setImmediate and clearImmediate are not widely supported across all browsers, and setTimeout with a timeout of 0 milliseconds is a more widely supported alternative.

Also, It's also important to note that if you are using the httpError inside the component, you should include it as a dependency in the useEffect hook, so that it re-renders every time httpError is changing.

Using setInterval

setInterval is a function that allows you to schedule a callback function to be executed repeatedly at a specified interval of time.

You can use setInterval to set the httpError variable after a certain interval of time has passed.

useEffect(() => {
    // Do something
    const intervalId = setInterval(() => {
        setHttpError("Error message")
    }, 5000);
    return () => clearInterval(intervalId);
}, []);

In this example, the setInterval function will schedule the callback function to be executed every 5000 milliseconds (5 seconds). This means that the httpError variable will be set to "Error message" every 5 seconds.

It's important to note that you should clear the interval when the component unmounts, otherwise the interval will keep running and the error message will be set repeatedly even if the component is not being displayed. You can do this by returning a function from the useEffect that calls clearInterval and passing it the intervalId.

You can adjust the interval to suit your specific needs, and you can also use the interval to clear the error message after the error is resolved, by checking the error status in the callback function and clear it if necessary.

let intervalId = null;

useEffect(() => {
    // Do something
    intervalId = setInterval(() => {
        if(!error){
            clearInterval(intervalId);
        }else{
            setHttpError("Error message")
        }
    }, 5000);
    return () => clearInterval(intervalId);
}, [error]);

Also, It's also important to note that if you are using the httpError inside the component, you should include it as a dependency in the useEffect hook, so that it re-renders every time httpError is changing.

It's also important to consider that you should clear the httpError variable after a certain time or when the error is resolved, otherwise the component will keep re-rendering with the error message.