npm install jetstatejetstate
 
state managment
install
``
npm
npm i jetstate --save
`use
javascript
import { init, state } from 'jetstate';/**
* initial new state
*/
init({
name: 'time',
defaultValue: new Date().getTime(),
willUpdate: (previousValue, nextValue) => {
console.log('willUpdate', previousValue, nextValue);
},
shouldUpdate: (previousValue, nextValue) => {
if (typeof nextValue 'number') return true;
else return false
},
didUpdate: value => {
console.log('didUpdate', value);
}
});
var time = state.time;
//with this code, willUpdate is run and then didUpdate is run
state.time = new Date().getTime();
``