JS: Openly recommend SummarizedCallable

Author: asgerf

javascript/ql/lib/semmle/javascript/dataflow/AdditionalFlowSteps.qll

@@ -28,6 +28,8 @@ private import semmle.javascript.internal.CachedStages
  *
  * This class is a singleton, and thus subclasses do not need to specify a characteristic predicate.
  *
+ * As an alternative to this class, consider using `DataFlow::SummarizedCallable`.
+ *
  * Note: For performance reasons, all subclasses of this class should be part
  * of the standard library. Use `isAdditionalFlowStep` for query-specific flow steps.
  */

javascript/ql/lib/semmle/javascript/dataflow/AdditionalTaintSteps.qll

@@ -11,6 +11,8 @@ private import semmle.javascript.internal.CachedStages
  *
  * This class is a singleton, and thus subclasses do not need to specify a characteristic predicate.
  *
+ * As an alternative to this class, consider using `DataFlow::SummarizedCallable`.
+ *
  * Note: For performance reasons, all subclasses of this class should be part
  * of the standard library. Use `isAdditionalFlowStep` for query-specific taint steps.
  */

javascript/ql/lib/semmle/javascript/dataflow/DataFlow.qll

@@ -1935,4 +1935,5 @@ module DataFlow {
   import internal.FunctionWrapperSteps
   import internal.sharedlib.DataFlow
   import internal.BarrierGuards
+  import FlowSummary
 }