The useBlockParentAttributes hook is a simple utility that makes it easy interface with the attributes of the direct parent block.
import { useBlockParentAttributes } from '@10up/block-components';
function BlockEdit(props) {
const [parentAttributes, setParentAttributes] = useBlockParentAttributes();
return (
<RichText
tagName="h2"
value={ parentAttributes.title }
onChange={ value => setParentAttributes({ title: value }) }
/>
);
}