theluk

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theluk

In situations where you initialize useState with some value and later on you want to update the state, because the parent changed, you would need to currently listen on the parent change in an useeffect and then set the state to update it, or more precisely, update the local version.

For this a hook I use quite often for forms or temporarily updated values is the useLocal hook.

Let's take this example

const RangeDatepicker = ({ value: { from, to }, onChange }) => {

theluk

Asynchronous methods within hooks can lead to issues, where your asynchronous code resolves after your component / hook was unmounted.

This usually causes react warnings, that you cannot set state on an unmounted component.

How to use useMountedEffect

const MyComponent = ({ id }) => {
 const [status, setStatus] = useState();

theluk

#!/bin/bash
trap "exit 1" ERR

isPush=false
if [[ "$1" == "--push" ]]
then
    isPush=true
    shift
else
    isPush=false