我试图在另一个组件中使用一个组件。在 created 事件中，我可以记录此组件并返回好对象。但是由于某些原因，该组件似乎未包含在内。VueJS 不理解 validation 标签。

有什么想法吗？

<template>
  <main>
    <validation :validate="$v.email" :model="'email'"></validation> 
  </main>
</template>
<script>
  import { Validation } from 'components/helpers'

  export default {
    name: 'login',
    component: { Validation },
    created() {
      // it works. print the component with his path
      window.console.log(Validation)
    }
  }
</script>

[Vue warn]: Unknown custom element: - did you register the component correctly? For recursive components, make sure to provide the "name" option.

在 components/helpers 中我有两个文件：

1) index.js

export { default as Validation } from './Validation'

2) Validation.vue

<template>
    <div>
        <span class="form__validation" v-if="validate && !validate.required">Required</span>
        <template v-if="validation[model]">
            <span class="form__validation" v-for="error in validation[model].messages">{{ error }}</span>
        </template>
    </div>
</template>

<script>
import { mapGetters } from 'vuex'

export default {
  name: 'validation',
  data() {
    return {
      L: L
    }
  },
  props: ['model', 'validate'],
  computed: {
    ...mapGetters({
      validation: 'getValidation'
    })
  }
}
</script>