type CustomComponent<T = {}> = WechatMiniprogram.Component.Instance<
  Record<string, any>,
  Record<string, any>,
  Record<string, any>,
  T
>

interface ComponentParentOption {
  parent: CustomComponent
}

interface ComponentChildrenOption {
  children: CustomComponent[]
}

type ComponentPropertyNumberType = {
  type: NumberConstructor
  observer?: (val: number) => void
  value?: number
}

type ComponentPropertyStringType = {
  type: StringConstructor
  observer?: (val: string) => void
  value?: string
}

type ComponentPropertyBooleanType = {
  type: BooleanConstructor
  observer?: (val: boolean) => void
  value?: boolean
}

type ComponentPropertyObjectType = {
  type: ObjectConstructor
  observer?: (val: object) => void
  value?: object
}

type ComponentPropertyArrayType<T = any> = {
  type: ArrayConstructor
  observer?: (val: T) => void
  value?: T
}

type SidebarChangeEvent = WechatMiniprogram.CustomEvent<{
  current: number
}>