test: add tests for vuejs/core#9541

Author: so1ve

test/__fixtures__/defineEmits/core#9541.vue

@@ -0,0 +1,11 @@
+<script setup lang="ts">
+interface Base {
+	(e: "change", id: number): void;
+}
+interface Emits extends Base {
+	(e: "unChange", id: number): void;
+}
+const emit = defineEmits<Emits>();
+
+emit("change", 1);
+</script>

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

@@ -20,6 +20,28 @@ export { basic as default };
 "
 `;
 
+exports[`fixtures compiled > __fixtures__/defineEmits/core#9541.vue 1`] = `
+"import { defineComponent } from 'vue';
+import _export_sfc from '[NULL]/plugin-vue/export-helper';
+
+\\"use strict\\";
+var _sfc_main = /* @__PURE__ */ defineComponent({
+  __name: \\"core#9541\\",
+  emits: [\\"unChange\\", \\"change\\"],
+  setup(__props, { emit: __emit }) {
+    const emit = __emit;
+    emit(\\"change\\", 1);
+    return () => {
+    };
+  }
+});
+
+var core_9541 = /* @__PURE__ */ _export_sfc(_sfc_main, [__FILE__]);
+
+export { core_9541 as default };
+"
+`;
+
 exports[`fixtures compiled > __fixtures__/defineEmits/shorthand.vue 1`] = `
 "import { defineComponent } from 'vue';
 import _export_sfc from '[NULL]/plugin-vue/export-helper';

test/__snapshots__/fixtures.test.ts.snap

@@ -9,6 +9,21 @@ defineEmits([\\"foo\\", \\"baz\\", \\"qux\\", \\"quote\\\\\\"\\"]);
 "
 `;
 
+exports[`fixtures > __fixtures__/defineEmits/core#9541.vue 1`] = `
+"<script setup lang=\\"ts\\">
+interface Base {
+	(e: \\"change\\", id: number): void;
+}
+interface Emits extends Base {
+	(e: \\"unChange\\", id: number): void;
+}
+const emit = defineEmits([\\"unChange\\", \\"change\\"]);
+
+emit(\\"change\\", 1);
+</script>
+"
+`;
+
 exports[`fixtures > __fixtures__/defineEmits/shorthand.vue 1`] = `
 "<script setup lang=\\"ts\\">
 import type { Events } from \\"./shorthand-ts\\";
@@ -34,7 +49,7 @@ stringUnion: \\"a\\" | \\"b\\"
 genericExtendsString: string
 array: string[]
 genericArray: (string | number)[]
-genericCondition: 1 | \\"a\\"
+genericCondition: \\"a\\" | 1
 function: () => void
 error: Error
 } & {