Added tests

data/fixtures/scopes/javascript.core/collectionItem.unenclosed.iteration.scope

@@ -0,0 +1,10 @@
+let foo, bar;
+---
+
+[Range] = 0:4-0:12
+      >--------<
+0| let foo, bar;
+
+[Domain] = 0:0-0:13
+  >-------------<
+0| let foo, bar;

data/fixtures/scopes/javascript.core/collectionItem.unenclosed.scope

@@ -0,0 +1,33 @@
+let foo, bar;
+---
+
+[#1 Content] =
+[#1 Domain] = 0:4-0:7
+      >---<
+0| let foo, bar;
+
+[#1 Removal] = 0:4-0:9
+      >-----<
+0| let foo, bar;
+
+[#1 Trailing delimiter] = 0:7-0:9
+         >--<
+0| let foo, bar;
+
+[#1 Insertion delimiter] = ", "
+
+
+[#2 Content] =
+[#2 Domain] = 0:9-0:12
+           >---<
+0| let foo, bar;
+
+[#2 Removal] = 0:7-0:12
+         >-----<
+0| let foo, bar;
+
+[#2 Leading delimiter] = 0:7-0:9
+         >--<
+0| let foo, bar;
+
+[#2 Insertion delimiter] = ", "

packages/common/src/scopeSupportFacets/javascript.ts

@@ -112,6 +112,9 @@ export const javascriptCoreScopeSupport: LanguageScopeSupportFacetMap = {
   "value.return": supported,
   "value.return.lambda": supported,
   "value.field": supported,
+
+  "collectionItem.unenclosed": supported,
+  "collectionItem.unenclosed.iteration": supported,
 };
 
 export const javascriptJsxScopeSupport: LanguageScopeSupportFacetMap = {

queries/javascript.core.scm

@@ -285,6 +285,15 @@
   (#insertion-delimiter! @collectionItem ", ")
 )
 
+;;!! let foo, bar;
+;;!      ^^^^^^^^
+;;!  -------------
+(lexical_declaration
+  .
+  (_) @collectionItem.iteration.start.startOf
+  ";"? @collectionItem.iteration.end.startOf
+) @collectionItem.iteration.domain
+
 (expression_statement
   [
     ;; name: