Function getCurrentInstanceForFn

src/utils/helper.ts:11–24

(
  hook: string,
  target?: ComponentInternalInstance | null
)

import { warn } from './utils'

export function getCurrentInstanceForFn(
  hook: string,
  target?: ComponentInternalInstance | null
): ComponentInternalInstance | null {
  target = target || getCurrentInstance()
  if (__DEV__ && !target) {
    warn(
      `${hook} is called when there is no active component instance to be ` +
        `associated with. ` +
        `Lifecycle injection APIs can only be used during execution of setup().`
    )
  }
  return target
}

export function defineComponentInstance<V extends Vue = Vue>(
  Ctor: VueConstructor<V>,