(fix) retrieval of comment above script/style (sveltejs#206)

Search of comment belonging to those blocks was wrong
Fixes sveltejs#205

CHANGELOG.md

@@ -1,5 +1,9 @@
 # prettier-plugin-svelte changelog
 
+## 2.1.5 (Unreleased)
+
+* Fix retrieval of comment belonging to script/style block ([#205](https://github.com/sveltejs/prettier-plugin-svelte/issues/205))
+
 ## 2.1.4
 
 * Don't print an empty line at the end of code embedded inside Markdown (further fixes) ([#202](https://github.com/sveltejs/prettier-plugin-svelte/issues/202))

src/print/node-helpers.ts

@@ -109,12 +109,16 @@ export function getLeadingComment(path: FastPath): CommentNode | undefined {
 
     let node: Node = path.getNode();
     let prev: Node | undefined = siblings.find((child) => child.end === node.start);
-    while (prev && (prev.type !== 'Comment' || isEmptyTextNode(prev))) {
-        node = prev;
-        prev = siblings.find((child) => child.end === node.start);
+    while (prev) {
+        if (prev.type === 'Comment') {
+            return prev;
+        } else if (isEmptyTextNode(prev)) {
+            node = prev;
+            prev = siblings.find((child) => child.end === node.start);
+        } else {
+            return undefined;
+        }
     }
-
-    return prev && prev.type === 'Comment' ? prev : undefined;
 }
 
 /**

test/printer/samples/comments-above-html-block.html

@@ -0,0 +1,6 @@
+<script></script>
+
+<!-- asd -->
+<div />
+
+<style></style>