initRender() — vue Function Reference

Architecture documentation for the initRender() function in render.ts from the vue codebase.

Function typescript CoreInstance VDOM calls 3 called by 1

Entity Profile

CoreInstance→ VDOM→ initRender() — vue Function Reference

Dependency Diagram

graph TD
  e088d580_2e3e_9093_295c_70dc92327b67["initRender()"]
  340c5746_ff29_c74c_9da5_50db2db76e5f["initMixin()"]
  340c5746_ff29_c74c_9da5_50db2db76e5f -->|calls| e088d580_2e3e_9093_295c_70dc92327b67
  456d8782_7a49_0d3e_9e64_31ae4ba7b534["resolveSlots()"]
  e088d580_2e3e_9093_295c_70dc92327b67 -->|calls| 456d8782_7a49_0d3e_9e64_31ae4ba7b534
  7f59d675_8a0c_03b6_a7a6_985942631eb0["normalizeScopedSlots()"]
  e088d580_2e3e_9093_295c_70dc92327b67 -->|calls| 7f59d675_8a0c_03b6_a7a6_985942631eb0
  451b8ba4_f373_c786_0c64_c3e7e51ce956["createElement()"]
  e088d580_2e3e_9093_295c_70dc92327b67 -->|calls| 451b8ba4_f373_c786_0c64_c3e7e51ce956
  style e088d580_2e3e_9093_295c_70dc92327b67 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/core/instance/render.ts lines 21–86

export function initRender(vm: Component) {
  vm._vnode = null // the root of the child tree
  vm._staticTrees = null // v-once cached trees
  const options = vm.$options
  const parentVnode = (vm.$vnode = options._parentVnode!) // the placeholder node in parent tree
  const renderContext = parentVnode && (parentVnode.context as Component)
  vm.$slots = resolveSlots(options._renderChildren, renderContext)
  vm.$scopedSlots = parentVnode
    ? normalizeScopedSlots(
        vm.$parent!,
        parentVnode.data!.scopedSlots,
        vm.$slots
      )
    : emptyObject
  // bind the createElement fn to this instance
  // so that we get proper render context inside it.
  // args order: tag, data, children, normalizationType, alwaysNormalize
  // internal version is used by render functions compiled from templates
  // @ts-expect-error
  vm._c = (a, b, c, d) => createElement(vm, a, b, c, d, false)
  // normalization is always applied for the public version, used in
  // user-written render functions.
  // @ts-expect-error
  vm.$createElement = (a, b, c, d) => createElement(vm, a, b, c, d, true)

  // $attrs & $listeners are exposed for easier HOC creation.
  // they need to be reactive so that HOCs using them are always updated
  const parentData = parentVnode && parentVnode.data

  /* istanbul ignore else */
  if (__DEV__) {
    defineReactive(
      vm,
      '$attrs',
      (parentData && parentData.attrs) || emptyObject,
      () => {
        !isUpdatingChildComponent && warn(`$attrs is readonly.`, vm)
      },
      true
    )
    defineReactive(
      vm,
      '$listeners',
      options._parentListeners || emptyObject,
      () => {
        !isUpdatingChildComponent && warn(`$listeners is readonly.`, vm)
      },
      true
    )
  } else {
    defineReactive(
      vm,
      '$attrs',
      (parentData && parentData.attrs) || emptyObject,
      null,
      true
    )
    defineReactive(
      vm,
      '$listeners',
      options._parentListeners || emptyObject,
      null,
      true
    )
  }
}