chore: TS fixes cleanup (#14750)

* chore: TS fixes cleanup

- move a test
- revert seemginly unnecessary code changes

* add another test

packages/svelte/src/compiler/phases/2-analyze/index.js

@@ -698,16 +698,8 @@ export function analyze_component(root, source, options) {
 	}
 
 	for (const node of analysis.module.ast.body) {
-		if (
-			node.type === 'ExportNamedDeclaration' &&
-			// @ts-expect-error
-			node.exportKind !== 'type' &&
-			node.specifiers !== null &&
-			node.source == null
-		) {
+		if (node.type === 'ExportNamedDeclaration' && node.specifiers !== null && node.source == null) {
 			for (const specifier of node.specifiers) {
-				// @ts-expect-error
-				if (specifier.exportKind === 'type') continue;
 				if (specifier.local.type !== 'Identifier') continue;
 
 				const binding = analysis.module.scope.get(specifier.local.name);

packages/svelte/src/compiler/phases/scope.js

@@ -433,13 +433,7 @@ export function create_scopes(ast, root, allow_reactive_declarations, parent) {
 		},
 
 		ImportDeclaration(node, { state }) {
-			// @ts-expect-error
-			if (node.importKind === 'type') return;
-
 			for (const specifier of node.specifiers) {
-				// @ts-expect-error
-				if (specifier.importKind === 'type') continue;
-
 				state.scope.declare(specifier.local, 'normal', 'import', node);
 			}
 		},

packages/svelte/tests/runtime-browser/samples/typescript-class-and-interface/_config.js

@@ -1,3 +0,0 @@
-import { test } from '../../assert';
-
-export default test({});

packages/svelte/tests/runtime-browser/samples/typescript-class-and-interface/main.svelte

@@ -1,5 +0,0 @@
-<script lang="ts">
-  // TypeScript syntax should not cause compilation failure
-  interface MyInterface {}
-  class MyClass implements MyInterface {}
-</script>

packages/svelte/tests/runtime-runes/samples/typescript/main.svelte

@@ -8,6 +8,10 @@
 		console.log(this);
 	}
 
+	function foo(): string {
+		return ""!;
+	}
+
 	class Foo<T> {
 		public name: string;
 		x = 'x' as const;
@@ -16,6 +20,8 @@
 		}
 	}
 
+	class MyClass implements Hello {}
+
 	declare const declared_const: number;
 	declare function declared_fn(): void;
 	declare class declared_class {