tests

packages/svelte/tests/validator/samples/ts-unsupported-accessor/errors.json

@@ -0,0 +1,14 @@
+[
+	{
+		"code": "typescript_invalid_feature",
+		"message": "TypeScript language features like accessor fields (related TSC proposal is not stage 4 yet) are not natively supported, and their use is generally discouraged. You will need to use a preprocessor to convert it to JavaScript before it gets passed to the Svelte compiler",
+		"start": {
+			"line": 3,
+			"column": 2
+		},
+		"end": {
+			"line": 3,
+			"column": 17
+		}
+	}
+]

packages/svelte/tests/validator/samples/ts-unsupported-accessor/input.svelte

@@ -0,0 +1,5 @@
+<script lang="ts">
+	class Foo {
+		accessor y = 1;
+	}
+</script>

packages/svelte/tests/validator/samples/ts-unsupported-decorator/errors.json

@@ -0,0 +1,14 @@
+[
+	{
+		"code": "typescript_invalid_feature",
+		"message": "TypeScript language features like decorators (related TSC proposal is not stage 4 yet) are not natively supported, and their use is generally discouraged. You will need to use a preprocessor to convert it to JavaScript before it gets passed to the Svelte compiler",
+		"start": {
+			"line": 2,
+			"column": 4
+		},
+		"end": {
+			"line": 2,
+			"column": 10
+		}
+	}
+]

packages/svelte/tests/validator/samples/ts-unsupported-decorator/input.svelte

@@ -0,0 +1,4 @@
+<script lang="ts">
+    @foo()
+	class Foo {}
+</script>

packages/svelte/tests/validator/samples/ts-unsupported-enum/errors.json

@@ -0,0 +1,14 @@
+[
+	{
+		"code": "typescript_invalid_feature",
+		"message": "TypeScript language features like enums are not natively supported, and their use is generally discouraged. You will need to use a preprocessor to convert it to JavaScript before it gets passed to the Svelte compiler",
+		"start": {
+			"line": 2,
+			"column": 1
+		},
+		"end": {
+			"line": 4,
+			"column": 2
+		}
+	}
+]

packages/svelte/tests/validator/samples/ts-unsupported-enum/input.svelte

@@ -0,0 +1,5 @@
+<script lang="ts">
+	enum Foo {
+		bar = 1
+	}
+</script>

packages/svelte/tests/validator/samples/ts-unsupported-modifier/errors.json

@@ -0,0 +1,14 @@
+[
+	{
+		"code": "typescript_invalid_feature",
+		"message": "TypeScript language features like accessibility modifiers on constructor parameters are not natively supported, and their use is generally discouraged. You will need to use a preprocessor to convert it to JavaScript before it gets passed to the Svelte compiler",
+		"start": {
+			"line": 3,
+			"column": 14
+		},
+		"end": {
+			"line": 3,
+			"column": 31
+		}
+	}
+]

packages/svelte/tests/validator/samples/ts-unsupported-modifier/input.svelte

@@ -0,0 +1,5 @@
+<script lang="ts">
+	class Foo {
+		constructor(private x: number) {}
+	}
+</script>

packages/svelte/tests/validator/samples/ts-unsupported-namespace/errors.json

@@ -0,0 +1,14 @@
+[
+	{
+		"code": "typescript_invalid_feature",
+		"message": "TypeScript language features like namespaces with non-type nodes are not natively supported, and their use is generally discouraged. You will need to use a preprocessor to convert it to JavaScript before it gets passed to the Svelte compiler",
+		"start": {
+			"line": 2,
+			"column": 1
+		},
+		"end": {
+			"line": 4,
+			"column": 2
+		}
+	}
+]

packages/svelte/tests/validator/samples/ts-unsupported-namespace/input.svelte

@@ -0,0 +1,5 @@
+<script module lang="ts">
+	namespace SomeNamespace {
+		export const foo = true;
+	}
+</script>

packages/svelte/tests/validator/test.ts

@@ -53,10 +53,20 @@ const { test, run } = suite<ValidatorTest>(async (config, cwd) => {
 	const expected = expected_errors && expected_errors[0];
 
 	if (error && expected) {
-		assert.equal(error.code, expected.code);
-		assert.equal(error.message, expected.message);
-		assert.deepEqual({ line: error.start?.line, column: error.start?.column }, expected.start);
-		assert.deepEqual({ line: error.end?.line, column: error.end?.column }, expected.end);
+		assert.deepEqual(
+			{
+				code: error.code,
+				message: error.message,
+				start: { line: error.start?.line, column: error.start?.column },
+				end: { line: error.end?.line, column: error.end?.column }
+			},
+			{
+				code: expected.code,
+				message: expected.message,
+				start: expected.start,
+				end: expected.end
+			}
+		);
 	} else if (expected) {
 		throw new Error(`Expected an error: ${expected.message}`);
 	} else if (error) {