handle template literals, except for super edge case where match occurs inside nested template literal

Author: Rich-Harris

packages/kit/src/exports/vite/comment_utils.js

@@ -95,6 +95,7 @@ export function is_within_comment(content, match_index) {
 		in_multi_line_comment ||
 		in_html_comment ||
 		in_single_quote ||
-		in_double_quote
+		in_double_quote ||
+		in_template_literal
 	);
 }

packages/kit/src/exports/vite/comment_utils.spec.js

@@ -142,7 +142,13 @@ test.each([
 		'+page.svelte',
 		true
 	],
-	['page option match inside string', '"export const trailingSlash = true"', '+page.svelte', false]
+	['page option match inside string', '"export const trailingSlash = true"', '+page.svelte', false],
+	[
+		'page option match inside template literal',
+		'`${42}export const trailingSlash = true`',
+		'+page.svelte',
+		false
+	]
 ])('warning behavior: %s', (_description, content, filename, should_warn) => {
 	const result = should_warn_for_content(content, filename);
 	expect(result).toBe(should_warn);