@wordpress/block-library/src/utils/is-block-metadata-experimental.js

Block library for the WordPress editor.

/**
 * Checks if the block is experimental based on the metadata loaded
 * from block.json.
 *
 * @param {Object} metadata Parsed block.json metadata.
 * @return {boolean} Is the block experimental?
 */
export default function isBlockMetadataExperimental( metadata ) {
	return (
		metadata &&
		'__experimental' in metadata &&
		metadata.__experimental !== false
	);
}