marktext/src/muya/lib/parser/render/renderInlines/hardLineBreak.js

import { CLASS_OR_ID } from '../../../config'

export default function softLineBreak (h, cursor, block, token, outerClass) {
  const { spaces, lineBreak, isAtEnd } = token
  const className = CLASS_OR_ID['AG_HARD_LINE_BREAK']
  const spaceClass = CLASS_OR_ID['AG_HARD_LINE_BREAK_SPACE']
  if (isAtEnd) {
    return [
      h(`span.${className}`, h(`span.${spaceClass}`, spaces)),
      h(`span.${CLASS_OR_ID['AG_LINE_END']}`, lineBreak)
    ]
  } else {
    return [
      h(`span.${className}`, [ h(`span.${spaceClass}`, spaces), lineBreak ])
    ]
  }
}