Infer attrs for implementing HOCs

[rudyxu1102]

Summary

Allowing to infer attrs by using attrs option of defineComponent or defineCustomElement.
And in the setup-script, passing generic type in the defineAttrs<T> will also infer attrs to T.

defineComponent

const Comp = defineComponent({
  props: {
    foo: String
  },
  attrs: Object as AttrsType<{
    bar?: number
  }>,
  created() {
    this.$attrs.bar // number | undefined
  }
});

<Comp foo={'str'} bar={1} />;

Setup Script

<script setup lang="ts">
const attrs = defineAttrs<{ bar?: number }>();
</script>

Links

• Full Rendered Proposal
• Discussion Thread

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