codeql/javascript/ql/test/library-tests/InterProceduralFlow/DataFlowConfig.qll

import javascript

class TestDataFlowConfiguration extends DataFlow::Configuration {
  TestDataFlowConfiguration() {
    this = "TestDataFlowConfiguration"
  }

  override predicate isSource(DataFlow::Node src) {
    exists (VariableDeclarator vd |
      vd.getBindingPattern().(VarDecl).getName().matches("%source%") and
      src.asExpr() = vd.getInit()
    )
  }

  override predicate isSink(DataFlow::Node snk) {
    exists (VariableDeclarator vd |
      vd.getBindingPattern().(VarDecl).getName().matches("%sink%") and
      snk.asExpr() = vd.getInit()
    )
  }

  override predicate isBarrier(DataFlow::Node src, DataFlow::Node snk) {
    src = src and
    snk.asExpr().(PropAccess).getPropertyName() = "notTracked"
    or
    exists (Function f |
      f.getName().matches("%noReturnTracking%") and
      src = f.getAReturnedExpr().flow() and
      snk.(DataFlow::InvokeNode).getACallee() = f
    )
  }
}