JS: Update debugging stuff in API graphs

Author: asgerf

javascript/ql/lib/semmle/javascript/ApiGraphs.qll

@@ -1678,20 +1678,40 @@ module API {
     import Cached
 
     private module Debug {
+      private module FullInput implements StageInputSig {
+        pragma[inline]
+        predicate isAdditionalUseRoot(Node node) { none() }
+
+        pragma[inline]
+        predicate isAdditionalDefRoot(Node node) { none() }
+
+        bindingset[node]
+        predicate inScope(DataFlow::Node node) { any() }
+      }
+
+      private module Full = Stage<FullInput>;
+
       query predicate missingDefNode(DataFlow::Node node) {
-        Stage1::rhs(_, _, node) and
+        Full::rhs(_, _, node) and
         not exists(MkDef(node))
       }
 
       query predicate missingUseNode(DataFlow::Node node) {
-        Stage1::use(_, _, node) and
+        Full::use(_, _, node) and
         not exists(MkUse(node))
       }
 
       query predicate lostEdge(Node pred, Label::ApiLabel lbl, Node succ) {
-        Stage1::edge(pred, lbl, succ) and
+        Full::edge(pred, lbl, succ) and
         not Cached::edge(pred, lbl, succ)
       }
+
+      query predicate counts(int numEdges, int numOverlayEdges, float ratio) {
+        numEdges = count(Node pred, Label::ApiLabel lbl, Node succ | Full::edge(pred, lbl, succ)) and
+        numOverlayEdges =
+          count(Node pred, Label::ApiLabel lbl, Node succ | Stage2::edge(pred, lbl, succ)) and
+        ratio = numOverlayEdges / numEdges.(float)
+      }
     }
 
     /**