diff --git a/src/intrinsics/prepack/global.js b/src/intrinsics/prepack/global.js
index 7785c1005..881a5aa54 100644
--- a/src/intrinsics/prepack/global.js
+++ b/src/intrinsics/prepack/global.js
@@ -398,6 +398,25 @@ export default function(realm: Realm): void {
     })
   );
 
+  // Helper function for Prepack developers inspect a value
+  // when interpreting a particular node in the AST.
+  global.$DefineOwnProperty(
+    "__debugValue",
+    new PropertyDescriptor({
+      value: createNativeFunctionForResidualInjection(
+        "__debugValue",
+        ([v, s]): void => {
+          debugger; // eslint-disable-line no-debugger
+        },
+        createOperationDescriptor("NOOP"),
+        2
+      ),
+      writable: true,
+      enumerable: false,
+      configurable: true,
+    })
+  );
+
   // Helper function that identifies a computation that must remain part of the residual program and cannot be partially evaluated,
   // e.g. because it contains a loop over abstract values.
   // __residual(typeNameOrTemplate, function, arg0, arg1, ...) creates a new abstract value
diff --git a/src/serializer/ResidualOperationSerializer.js b/src/serializer/ResidualOperationSerializer.js
index 5b18648e3..0a8394f08 100644
--- a/src/serializer/ResidualOperationSerializer.js
+++ b/src/serializer/ResidualOperationSerializer.js
@@ -133,6 +133,9 @@ export class ResidualOperationSerializer {
       case "LOCAL_ASSIGNMENT":
         babelNode = this._serializeLocalAssignment(data, nodes, context, valuesToProcess);
         break;
+      case "NOOP":
+        babelNode = t.emptyStatement();
+        break;
       case "OBJECT_SET_PARTIAL":
         babelNode = this._serializeObjectSetPartial(data, nodes);
         break;
diff --git a/src/utils/generator.js b/src/utils/generator.js
index 3d0be7f9e..53b28a44f 100644
--- a/src/utils/generator.js
+++ b/src/utils/generator.js
@@ -103,6 +103,7 @@ export type OperationDescriptorType =
   | "LOGICAL_PROPERTY_ASSIGNMENT"
   | "MODULES_REQUIRE"
   | "NEW_EXPRESSION"
+  | "NOOP"
   | "OBJECT_ASSIGN"
   | "OBJECT_GET_PARTIAL"
   | "OBJECT_PROTO_GET_OWN_PROPERTY_DESCRIPTOR"
diff --git a/test/serializer/abstract/DebugValue.js b/test/serializer/abstract/DebugValue.js
new file mode 100644
index 000000000..27dc5b2f0
--- /dev/null
+++ b/test/serializer/abstract/DebugValue.js
@@ -0,0 +1,9 @@
+let x = global.__abstract ? __abstract("boolean", "true") : true;
+let ob = x ? { a: 1 } : { b: 2 };
+
+global.__abstract ? __debugValue(ob) : {};
+global.__abstract ? __debugValue([ob, x]) : {};
+
+inspect = function() {
+  return true;
+};