test: add tests for vuejs/core#8468

Author: so1ve

test/__fixtures__/core#8468-props.ts

@@ -0,0 +1,4 @@
+type Text = { type: "text"; value: string };
+type Number = { type: "number"; value: number };
+
+export type Inputs = Text | Number;

test/__fixtures__/core#8468.vue

@@ -0,0 +1,5 @@
+<script setup lang="ts" generic="P extends Inputs">
+import type { Inputs } from "./core#8468-props.ts";
+
+defineProps<P>();
+</script>

test/__snapshots__/fixtures-compiled.test.ts.snap

@@ -239,6 +239,29 @@ export { core_8286 as default };
 "
 `;
 
+exports[`fixtures compiled > __fixtures__/core#8468.vue 1`] = `
+"import { defineComponent } from 'vue';
+import _export_sfc from '[NULL]/plugin-vue/export-helper';
+
+\\"use strict\\";
+var _sfc_main = /* @__PURE__ */ defineComponent({
+  __name: \\"core#8468\\",
+  props: {
+    type: { type: String, required: true },
+    value: { type: [String, Number], required: true }
+  },
+  setup(__props) {
+    return () => {
+    };
+  }
+});
+
+var core_8468 = /* @__PURE__ */ _export_sfc(_sfc_main, [__FILE__]);
+
+export { core_8468 as default };
+"
+`;
+
 exports[`fixtures compiled > __fixtures__/import-from-vue.vue 1`] = `
 "import { defineComponent } from 'vue';
 import _export_sfc from '[NULL]/plugin-vue/export-helper';

test/__snapshots__/fixtures.test.ts.snap

@@ -230,6 +230,18 @@ onTransitionstart: any
 "
 `;
 
+exports[`fixtures > __fixtures__/core#8468.vue 1`] = `
+"<script setup lang=\\"ts\\" generic=\\"P extends Inputs\\">
+import type { Inputs } from \\"./core#8468-props.ts\\";
+
+defineProps<{
+type: \\"number\\" | \\"text\\"
+value: string | number
+}>();
+</script>
+"
+`;
+
 exports[`fixtures > __fixtures__/import-from-vue.vue 1`] = `
 "<script setup lang=\\"ts\\" generic=\\"T extends string\\">
 import type { Foo } from \\"./import-from-vue-vue.exclude.vue\\";