in src/ComponentBase.ts [93:101]
private _handleUpdate(nextProps: Readonly<P>, incomingState: Readonly<S>): Partial<S> | null {
if (!Options.shouldComponentUpdateComparator(this.props, nextProps)) {
const newState = this._buildStateWithAutoSubscriptions(nextProps, incomingState, false);
if (newState && Object.keys(newState).length) {
return newState;
}
}
return null;
}