@atlaskit/editor-common/dist/esm/paste/md-plugins/ignore-list-heading-md-plugin.js

A package that contains common classes and components for editor and renderer

/*
 * ED-15646
 * Headings in list items are not supported in our schema.
 * As the markdown transformer is used by the paste plugin,
 * certain pastes will strip invalid lines as
 * prosemirror-markdown cannot conform to the schema
 */

// Ignored via go/ees005
// eslint-disable-next-line @typescript-eslint/max-params
function handleHeadingOpen(state, token, acc, index) {
  var _state$tokens;
  var isInListItem = ((_state$tokens = state.tokens[index - 1]) === null || _state$tokens === void 0 ? void 0 : _state$tokens.type) === 'list_item_open';
  if (isInListItem) {
    acc.push(new state.Token('paragraph_open', 'p', 1));
  } else {
    acc.push(token);
  }
}

// Ignored via go/ees005
// eslint-disable-next-line @typescript-eslint/max-params
function handleHeadingClose(state, token, acc, index) {
  var _state$tokens2;
  var isInListItem = ((_state$tokens2 = state.tokens[index + 1]) === null || _state$tokens2 === void 0 ? void 0 : _state$tokens2.type) === 'list_item_close';
  if (isInListItem) {
    acc.push(new state.Token('paragraph_close', 'p', -1));
  } else {
    acc.push(token);
  }
}
export default function (md) {
  md.core.ruler.after('inline', 'ignore-list-heading-md-plugin', function (state) {
    state.tokens = state.tokens.reduce(function (acc, token, index) {
      var type = token.type;
      if (type === 'heading_open') {
        handleHeadingOpen(state, token, acc, index);
      } else if (type === 'heading_close') {
        handleHeadingClose(state, token, acc, index);
      } else {
        acc.push(token);
      }
      return acc;
    }, []);
  });
}