test(tsc): add tests for #3779, #3820 (#3838)

packages/language-server/tests/renaming.spec.ts

@@ -776,7 +776,7 @@ describe('Renaming', async () => {
 
 		const position = document.positionAt(offset);
 		const edit = await server.sendRenameRequest(document.uri, position, newName);
-		expect(edit).toBeDefined();
+		expect(edit?.changes).toBeDefined();
 
 		for (const [uri, edits] of Object.entries(edit!.changes!)) {
 			delete edit!.changes![uri];

test-workspace/tsc/passedFixtures/vue3.5/#3779/main.vue

@@ -0,0 +1,10 @@
+<script setup lang="ts">
+import { exactType } from '../../shared';
+defineProps<{
+	optionalBoolean?: boolean;
+}>();
+</script>
+
+<template>
+	<h1>{{ exactType(optionalBoolean, {} as boolean | undefined) }}</h1>
+</template>

test-workspace/tsc/passedFixtures/vue3.5/#3779/named.vue

@@ -0,0 +1,10 @@
+<script setup lang="ts">
+import { exactType } from '../../shared';
+defineProps<{
+	optionalBoolean?: boolean;
+}>();
+</script>
+
+<template>
+	<h1>{{ exactType(optionalBoolean, {} as boolean | undefined) }}</h1>
+</template>

test-workspace/tsc/passedFixtures/vue3.5/#3820/main.vue

@@ -0,0 +1,19 @@
+<script setup lang="ts" generic="T extends { name: string }">
+const props = defineProps<{
+	one: T;
+	all: Array<T>;
+}>();
+</script>
+
+<template>
+	<div>
+		<!-- incorrect inference -->
+		<div>{{ one.name }}</div>
+		<!-- correct inference -->
+		<div>{{ props.one.name }}</div>
+		<ul>
+			<!-- correct inference -->
+			<li v-for="el in all">{{ el.name }}</li>
+		</ul>
+	</div>
+</template>

test-workspace/tsc/passedFixtures/vue3.5/tsconfig.json

@@ -1,6 +1,7 @@
 {
 	"extends": "../../../tsconfig.base.json",
 	"vueCompilerOptions": {
+		"lib": "vue3.5",
 		"target": 3.5,
 	},
 	"include": [