谁能告诉我为什么打字稿对我大喊大叫并出现以下错误？ error TS7006：参数“el”隐式具有“any”类型。 ref="(el) => saveRef(index, el)".我很确定 saveRef 函数中设置了正确的类型。

<script lang="ts" setup>
    import FormComponent from '@/components/FormComponent.vue'

    const formRefs = ref<
      ComponentPublicInstance<typeof FormComponent>[]
    >([])

    function saveRef(
      index: number,
      el: ComponentPublicInstance<typeof FormComponent>
    ) {
      formRefs.value[index] = el
    }

    onBeforeUpdate(() => {
      formRefs.value = []
    })
  </script>

  <template>
    <div v-for="(component, index) in components" :key="index">
      <form-component
        :ref="(el) => saveRef(index, el)"
        :component="component"
        :index="index"
      />
   </div>
 </template>