@atlaskit/editor-wikimarkup-transformer/dist/es2019/parser/tokenize/hardbreak.js

Wiki markup transformer for JIRA and Confluence

import { parseNewlineOnly } from './whitespace';
export const hardbreak = ({
  input,
  position,
  schema
}) => {
  // Look for normal hardbreak \r, \n, \r\n
  const length = parseNewlineOnly(input.substring(position));
  if (length === 0) {
    // not a valid hardbreak
    return {
      type: 'text',
      text: input.substr(position, 1),
      length: 1
    };
  }
  return {
    type: 'pmnode',
    nodes: [schema.nodes.hardBreak.createChecked()],
    length
  };
};