in web/src/components/playground.js [311:326]
_spitComponents() {
Split(
[
this.shadowRoot.querySelector('#config-code-panel-container'),
this.shadowRoot.querySelector('#payload-code-panel-container'),
],
{
direction: 'vertical',
}
);
Split([
this.shadowRoot.querySelector('#left-panel'),
this.shadowRoot.querySelector('#right-panel'),
]);
}