element-plus/packages/components/collapse-transition/index.ts

import CollapseTransition from './src/collapse-transition.vue'
import type { App } from 'vue'
import type { SFCWithInstall } from '@element-plus/utils'

CollapseTransition.install = (app: App): void => {
  app.component(CollapseTransition.name, CollapseTransition)
}

const _CollapseTransition = CollapseTransition as SFCWithInstall<
  typeof CollapseTransition
>

export default _CollapseTransition
export const ElCollapseTransition = _CollapseTransition