@atlaskit/editor-plugin-base/dist/esm/pm-plugins/newline-preserve-marks.js

Base plugin for @atlaskit/editor-core

import { SafePlugin } from '@atlaskit/editor-common/safe-plugin';
import { filterCommand as filter, isSelectionEndOfParagraph } from '@atlaskit/editor-common/utils';
import { keydownHandler } from '@atlaskit/editor-prosemirror/keymap';
import { PluginKey } from '@atlaskit/editor-prosemirror/state';
import { expValEquals } from '@atlaskit/tmp-editor-statsig/exp-val-equals';
export var newlinePreserveMarksKey = new PluginKey('newlinePreserveMarksPlugin');
var isSelectionAligned = function isSelectionAligned(state) {
  return !!state.selection.$to.parent.marks.find(function (m) {
    return m.type === state.schema.marks.alignment;
  });
};
var isSelectionFontSized = function isSelectionFontSized(state) {
  var _state$schema$nodes = state.schema.nodes,
    blockTaskItem = _state$schema$nodes.blockTaskItem,
    listItem = _state$schema$nodes.listItem;
  var fontSize = state.schema.marks.fontSize;
  var $to = state.selection.$to;
  var grandParent = $to.node($to.depth - 1);
  if (!fontSize ||
  // don't intercept Enter inside blockTaskItem or listItem
  grandParent && (grandParent.type === blockTaskItem || grandParent.type === listItem)) {
    return false;
  }
  return !!$to.parent.marks.find(function (m) {
    return m.type === fontSize;
  });
};
var hasBlockMarksToPreserve = function hasBlockMarksToPreserve(state) {
  return isSelectionAligned(state) || isSelectionFontSized(state);
};
var splitBlockPreservingMarks = function splitBlockPreservingMarks(state, dispatch) {
  if (dispatch) {
    dispatch(state.tr.split(state.tr.mapping.map(state.selection.$from.pos), 1));
  }
  return true;
};
export default (function () {
  return new SafePlugin({
    key: newlinePreserveMarksKey,
    props: {
      handleKeyDown: keydownHandler({
        Enter: expValEquals('platform_editor_small_font_size', 'isEnabled', true) ? filter([isSelectionEndOfParagraph, hasBlockMarksToPreserve], splitBlockPreservingMarks) : filter([isSelectionEndOfParagraph, isSelectionAligned], splitBlockPreservingMarks)
      })
    }
  });
});