message: no need to check domProps in extract-props because domProp casting can only happen for native elements
diff: @@ -22,8 +22,8 @@ export function extractPropsFromVNodeData (
  return
  }
  const res = {}
  - const { attrs, props, domProps } = data
  - if (isDef(attrs) || isDef(props) || isDef(domProps)) {
  + const { attrs, props } = data
  + if (isDef(attrs) || isDef(props)) {
  for (const key in propOptions) {
  const altKey = hyphenate(key)
  if (process.env.NODE_ENV !== 'production') {
  @@ -43,8 +43,7 @@ export function extractPropsFromVNodeData (
  }
  }
  checkProp(res, props, key, altKey, true) ||
  - checkProp(res, attrs, key, altKey, false) ||
  - checkProp(res, domProps, key, altKey, false)
  + checkProp(res, attrs, key, altKey, false)
  }
  }
  return res
  