hunk.code_window:     return +str
     const [wStr = '', hStr = ''] = str.split(/[:\/x\|]/)
     const w = parseFloat(wStr.trim())
     const h = parseFloat(hStr.trim())
  
hunk.labels: keep keep replace replace keep
hunk.after_edit:   const w = Number.parseFloat(wStr.trim())
     const h = Number.parseFloat(hStr.trim())
  
hunk.file_path: packages/parser/src/utils.ts
hunk.type: replace
file: <template>
    <div class="slidev-layout center h-full grid place-content-center">
      <div class="my-auto">
        <slot />
      </div>
    </div>
  </template>
  