JS: Add TODO about switching to the shared library

Author: asgerf

javascript/ql/lib/semmle/javascript/dataflow/internal/sharedlib/FlowSummaryImpl.qll

@@ -12,6 +12,7 @@ private import DataFlowImplSpecific::Public
 private import DataFlowImplCommon
 private import codeql.util.Unit
 
+// TODO: switch to the shared implementation of FlowSummaryImpl.qll
 /** Provides classes and predicates for defining flow summaries. */
 module Public {
   private import Private