@atlaskit/editor-plugin-block-menu/dist/esm/editor-commands/is-empty-line.js

BlockMenu plugin for @atlaskit/editor-core

/** True when there is one source node and it is an empty or whitespace-only paragraph or heading. */
export var isEmptyLine = function isEmptyLine(sourceNodes) {
  if (sourceNodes.length !== 1) {
    return false;
  }
  var source = sourceNodes[0];
  var _source$type$schema$n = source.type.schema.nodes,
    heading = _source$type$schema$n.heading,
    paragraph = _source$type$schema$n.paragraph;
  return (source.type === paragraph || source.type === heading) && (source.content.size === 0 || source.textContent.trim() === '');
};