@wordpress/blocks/src/api/raw-handling/slack-paragraph-corrector.ts

Block API for WordPress.

/**
 * Replaces Slack paragraph markup with a double line break (later converted to
 * a proper paragraph).
 *
 * @param node Node to check.
 */
export default function slackParagraphCorrector( node: Node ) {
	if ( node.nodeName !== 'SPAN' ) {
		return;
	}

	if (
		( node as Element ).getAttribute( 'data-stringify-type' ) !==
		'paragraph-break'
	) {
		return;
	}

	const parentNode = node.parentNode!;

	parentNode.insertBefore( node.ownerDocument!.createElement( 'br' ), node );
	parentNode.insertBefore( node.ownerDocument!.createElement( 'br' ), node );
	parentNode.removeChild( node );
}