uhyo

// Builderオブジェクトの型
type Builder<Props, Result> = ({} extends Props
  ? {
      build: () => Result;
    }
  : {}) &
  { [P in keyof Props]-?: SetFunction<Props, P, Result> };

type SetFunction<Props, K extends keyof Props, Result> = (
  value: Exclude<Props[K], undefined>

torounit

import { Fragment, useCallback } from '@wordpress/element';
import { useDispatch, useSelect } from '@wordpress/data';

const useMeta = ( key ) => {
	const meta = useSelect( ( select ) => {
		const { getEditedPostAttribute } = select( 'core/editor' );
		const values = getEditedPostAttribute( 'meta' ) || {};
		return values[ key ] || '';
	}, [] );