Vue3 patch function simplified

vue3_patch_simplified.ts

function patch(
  n1: HostVNode | null
  n2: HostVNode,
  container: HostElement
  /* elided arguments */
) {
  /* elided */

  const { type, shapeFlag } = n2
  switch (type) {
    case Text:
      processText(n1, n2, container, /* elided args */)
      break

    case Comment:
      processCommentNode(n1, n2, container, /* elided args */)
      break
      
    /* some elided cases */
    default:
      if (shapeFlag & ShapeFlags.ELEMENT) {
        processElement(n1, n2, container, /* elided args */)
      } else if (shapeFlag & ShapeFlags.COMPONENT) {
        processComponent(n1, n2, container, /* elided args */)
      }
  }
}