Function getContextByContextType

packages/nerv/src/lifecycle.ts:82–92

(vnode: FullComponent, parentContext: ParentContext)

}

export function getContextByContextType (vnode: FullComponent, parentContext: ParentContext) {
  const contextType = vnode.type.contextType
  const hasContextType = !isUndefined(contextType)
  const provider = hasContextType ? (parentContext[contextType._id]) : null
  const context = hasContextType
    ? (
      !isNullOrUndef(provider) ? provider.value : contextType._defaultValue
    )
    : parentContext
  return context
}

export function mountComponent (
  vnode: FullComponent,