diff --git a/package.json b/package.json
index a2d653069..d1b5b5a77 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,8 @@
     "checksize": "npm run build && cat dist/bundled.js | gzip -9 | wc -c",
     "icons": "node scripts/generateIconList.js",
     "vscode-data": "wireit",
-    "ncu": "ncu -u"
+    "ncu": "ncu -u",
+    "postinstall": "npx playwright install chromium --only-shell"
   },
   "wireit": {
     "analyze": {
diff --git a/src/vscode-tree/vscode-tree.test.ts b/src/vscode-tree/vscode-tree.test.ts
index 09191bc70..056b79a91 100644
--- a/src/vscode-tree/vscode-tree.test.ts
+++ b/src/vscode-tree/vscode-tree.test.ts
@@ -54,7 +54,7 @@ describe('vscode-tree', () => {
             <div class="contents" style="padding-left: 3px;">
               <span class="text-content" part="text-content"> Branch 2 </span>
             </div>
-            <ul style="--indent-guide-pos:3px;">
+            <ul style="--indent-guide-pos: 3px;">
               <li class="leaf" data-path="1/0">
                 <div class="contents" style="padding-left: 11px;">
                   <span class="text-content" part="text-content"> Leaf 2.1 </span>