[dataflowengineoss] - Graceful Error Handling for AccessPathUsage (jo…

…ernio#3893)

Added WARN log for missing node handling and continued with further processing. Added respective unit tests for the same. Note: This is not the fix, this will just unblock the further processing of the CPG.

dataflowengineoss/src/main/scala/io/joern/dataflowengineoss/queryengine/AccessPathUsage.scala

@@ -39,6 +39,9 @@ object AccessPathUsage {
           val (base, tail) = toTrackedBaseAndAccessPathInternal(argOne.get)
           val path         = AccessPathHandling.memberAccessToPath(memberAccess, tail)
           (base, path)
+        case _ =>
+          logger.warn(s"Missing handling for node type ${node.getClass}.")
+          (TrackedUnknown, Nil)
       }
     }
   }

joern-cli/frontends/jssrc2cpg/src/test/scala/io/joern/jssrc2cpg/dataflow/DataflowTest.scala

@@ -695,4 +695,17 @@ class DataflowTest extends DataFlowCodeToCpgSuite {
       sink.reachableBy(identifierSource).size shouldBe 1
     }
   }
+
+  "Field access on TemplatedDom directly" should {
+    val cpg = code("""
+                     |import { useRouter } from "next/router";
+                     |
+                     |const tabComponentType = (<Tab title={"typeComponent"} />).type;
+                     |
+        |""".stripMargin)
+    "Not throw error and get handled it gracefully" in {
+      val List(x) = cpg.identifier("tabComponentType").l
+      x.lineNumber shouldBe Some(4)
+    }
+  }
 }