_createElement() — vue Function Reference

Architecture documentation for the _createElement() function in create-element.ts from the vue codebase.

Function typescript CoreInstance VDOM calls 4 called by 1

Entity Profile

CoreInstance→ VDOM→ _createElement() — vue Function Reference

Dependency Diagram

graph TD
  7716a396_9ff2_1c13_0212_ab7b31aad036["_createElement()"]
  451b8ba4_f373_c786_0c64_c3e7e51ce956["createElement()"]
  451b8ba4_f373_c786_0c64_c3e7e51ce956 -->|calls| 7716a396_9ff2_1c13_0212_ab7b31aad036
  474757cc_f7dc_eabe_83a2_509534861f2f["createEmptyVNode()"]
  7716a396_9ff2_1c13_0212_ab7b31aad036 -->|calls| 474757cc_f7dc_eabe_83a2_509534861f2f
  9f53d048_e9bd_bd7d_3ea7_71affe1529d8["createComponent()"]
  7716a396_9ff2_1c13_0212_ab7b31aad036 -->|calls| 9f53d048_e9bd_bd7d_3ea7_71affe1529d8
  679b5260_7af4_19de_f858_0b80581df732["applyNS()"]
  7716a396_9ff2_1c13_0212_ab7b31aad036 -->|calls| 679b5260_7af4_19de_f858_0b80581df732
  33aeb152_bca9_4578_fdeb_6babd29c68de["registerDeepBindings()"]
  7716a396_9ff2_1c13_0212_ab7b31aad036 -->|calls| 33aeb152_bca9_4578_fdeb_6babd29c68de
  style 7716a396_9ff2_1c13_0212_ab7b31aad036 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/core/vdom/create-element.ts lines 46–140

export function _createElement(
  context: Component,
  tag?: string | Component | Function | Object,
  data?: VNodeData,
  children?: any,
  normalizationType?: number
): VNode | Array<VNode> {
  if (isDef(data) && isDef((data as any).__ob__)) {
    __DEV__ &&
      warn(
        `Avoid using observed data object as vnode data: ${JSON.stringify(
          data
        )}\n` + 'Always create fresh vnode data objects in each render!',
        context
      )
    return createEmptyVNode()
  }
  // object syntax in v-bind
  if (isDef(data) && isDef(data.is)) {
    tag = data.is
  }
  if (!tag) {
    // in case of component :is set to falsy value
    return createEmptyVNode()
  }
  // warn against non-primitive key
  if (__DEV__ && isDef(data) && isDef(data.key) && !isPrimitive(data.key)) {
    warn(
      'Avoid using non-primitive value as key, ' +
        'use string/number value instead.',
      context
    )
  }
  // support single function children as default scoped slot
  if (isArray(children) && isFunction(children[0])) {
    data = data || {}
    data.scopedSlots = { default: children[0] }
    children.length = 0
  }
  if (normalizationType === ALWAYS_NORMALIZE) {
    children = normalizeChildren(children)
  } else if (normalizationType === SIMPLE_NORMALIZE) {
    children = simpleNormalizeChildren(children)
  }
  let vnode, ns
  if (typeof tag === 'string') {
    let Ctor
    ns = (context.$vnode && context.$vnode.ns) || config.getTagNamespace(tag)
    if (config.isReservedTag(tag)) {
      // platform built-in elements
      if (
        __DEV__ &&
        isDef(data) &&
        isDef(data.nativeOn) &&
        data.tag !== 'component'
      ) {
        warn(
          `The .native modifier for v-on is only valid on components but it was used on <${tag}>.`,
          context
        )
      }
      vnode = new VNode(
        config.parsePlatformTagName(tag),
        data,
        children,
        undefined,
        undefined,
        context
      )
    } else if (
      (!data || !data.pre) &&
      isDef((Ctor = resolveAsset(context.$options, 'components', tag)))
    ) {
      // component
      vnode = createComponent(Ctor, data, context, children, tag)
    } else {
      // unknown or unlisted namespaced elements
      // check at runtime because it may get assigned a namespace when its
      // parent normalizes children
      vnode = new VNode(tag, data, children, undefined, undefined, context)
    }
  } else {
    // direct component options / constructor
    vnode = createComponent(tag as any, data, context, children)
  }
  if (isArray(vnode)) {
    return vnode
  } else if (isDef(vnode)) {
    if (isDef(ns)) applyNS(vnode, ns)
    if (isDef(data)) registerDeepBindings(data)
    return vnode
  } else {
    return createEmptyVNode()
  }
}