Function forEachElement

packages/runtime-core/src/hydrationStrategies.ts:113–139

(
  node: Node,
  cb: (el: Element) => void | false,
)

  }

export function forEachElement(
  node: Node,
  cb: (el: Element) => void | false,
): void {
  // fragment
  if (isComment(node) && node.data === '[') {
    let depth = 1
    let next = node.nextSibling
    while (next) {
      if (next.nodeType === DOMNodeTypes.ELEMENT) {
        const result = cb(next as Element)
        if (result === false) {
          break
        }
      } else if (isComment(next)) {
        if (next.data === ']') {
          if (--depth === 0) break
        } else if (next.data === '[') {
          depth++
        }
      }
      next = next.nextSibling
    }
  } else {
    cb(node as Element)
  }
}