MobX Quick Start Guide

ObservableValue

ObservableValue is a subclass of Atom that adds the ability to store the value of the observable. It also adds a few more capabilities such as providing hooks for intercepting a value change and observing the value. This is also part of the definition for ObservableValue. Here is a simplified definition of ObservableValue:

class ObservableValue extends Atom {    value;    get() {        /* ... */        this.reportObserved();    }    set(value) {                /* Pass through interceptor, which may modify the value (newValue) ... */        this.value = newValue;        this.reportChanged();    }    intercept(handler) {}    observe(listener, fireImmediately) {}}

Notice the calls to reportObserved() in the get() method and reportChanged() in the set() method. These are the places where ...