test: correctly reproduce #3819

test-workspace/tsc/#3819/component.vue

@@ -0,0 +1,8 @@
+<script lang="ts" setup generic="T">
+
+type ISlots = {
+  "last-columns": (props: string) => void
+  "lastColumns": (props: string) => void
+};
+defineSlots<ISlots>();
+</script>

test-workspace/tsc/vue3/#3819/main.vue → test-workspace/tsc/#3819/main.vue

@@ -1,19 +1,19 @@
 <script setup>
-import Comp from './comp.vue';
+import Comp from './component.vue';
 
 const config = {
 	a: 'a',
 	b: 'b',
 	c: 'c',
 	d: 'd',
-};
+}
 </script>
 
 <template>
 	<Comp :config="config">
 		<template #last-columns></template>
 		<!-- @vue-expect-error -->
-		<template #last-columnsasd></template>
+		<template #last-columnsasd></template> <!-- should be error  -->
 		<template #lastColumns></template>
 		<!-- @vue-expect-error -->
 		<template #lastColumnsasd></template>

test-workspace/tsc/#3819/tsconfig.json

@@ -0,0 +1,8 @@
+{
+	"extends": "../../tsconfig.json",
+	"include": [ "**/*" ],
+	"compilerOptions": {
+		"strict": false,
+		"checkJs": true,
+	},
+}