Function createInstance

src/createInstance.ts:72–367

(
  // eslint-disable-next-line @typescript-eslint/no-empty-object-type
  inputComponent: DefineComponent<{}, {}, any, any, any, any>,
  options?: MountingOptions<any> & Record<string, any>
)

// implementation
export function createInstance(
  // eslint-disable-next-line @typescript-eslint/no-empty-object-type
  inputComponent: DefineComponent<{}, {}, any, any, any, any>,
  options?: MountingOptions<any> & Record<string, any>
) {
  // normalize the incoming component
  const originalComponent = unwrapLegacyVueExtendComponent(inputComponent)
  let component: ConcreteComponent
  const instanceOptions = getInstanceOptions(options ?? {})

  const rootComponents: CreateStubComponentsTransformerConfig['rootComponents'] =
    {}

  if (
    isFunctionalComponent(originalComponent) ||
    isLegacyFunctionalComponent(originalComponent)
  ) {
    component = defineComponent({
      compatConfig: {
        MODE: 3,
        INSTANCE_LISTENERS: false,
        INSTANCE_ATTRS_CLASS_STYLE: false,
        COMPONENT_FUNCTIONAL: isLegacyFunctionalComponent(originalComponent)
          ? 'suppress-warning'
          : false
      },
      props: originalComponent.props || {},
      setup:
        (props, { attrs, slots }) =>
        () =>
          h(originalComponent, { ...props, ...attrs }, slots),
      ...instanceOptions
    })
    rootComponents.functional = originalComponent
  } else if (isObjectComponent(originalComponent)) {
    component = { ...originalComponent, ...instanceOptions }
  } else {
    component = originalComponent
  }

  rootComponents.component = component
  // We've just replaced our component with its copy
  // Let's register it as a stub so user can find it
  registerStub({ source: originalComponent, stub: component })

  function slotToFunction(slot: Slot) {
    switch (typeof slot) {
      case 'function':
        return slot
      case 'object':
        return () => h(slot)
      case 'string':
        return processSlot(slot)
      default:
        throw Error(`Invalid slot received.`)
    }
  }