function defineExpose(exposed) {
      {
          warnRuntimeUsage(`defineExpose`);
      }
  }
Vue `<script setup>` compiler macro for declaring a component's exposed
instance properties when it is accessed by a parent component via template
refs.

`<script setup>` components are closed by default - i.e. variables inside
the `<script setup>` scope is not exposed to parent unless explicitly exposed
via `defineExpose`.

This is only usable inside `<script setup>`, is compiled away in the
output and should **not** be actually called at runtime.