diff --git a/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.js b/compiler/crates/forget_hermes_parser/tests/fixtures/for-of-mutate.tsx
similarity index 100%
rename from compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.js
rename to compiler/crates/forget_hermes_parser/tests/fixtures/for-of-mutate.tsx
diff --git a/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.expect.md b/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.expect.md
index 412f474e84..c8289545ae 100644
--- a/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.expect.md
+++ b/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.expect.md
@@ -2,29 +2,43 @@
 ## Input
 
 ```javascript
-function Component(props) {
-  const collection = [makeObject()];
+import { makeObject_Primitives, mutateObject, Stringify } from "shared-runtime";
+
+function Component(_props) {
+  const collection = [makeObject_Primitives()];
   const results = [];
   for (const item of collection) {
-    results.push(<div>{mutate(item)}</div>);
+    results.push(
+      <div key={Stringify(item)}>{Stringify(mutateObject(item))}</div>
+    );
   }
   return <div>{results}</div>;
 }
 
+export const FIXTURE_ENTRYPOINT = {
+  fn: Component,
+  params: [],
+  isComponent: true,
+};
+
 ```
 
 ## Code
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(props) {
+import { makeObject_Primitives, mutateObject, Stringify } from "shared-runtime";
+
+function Component(_props) {
   const $ = useMemoCache(2);
   let results;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    const collection = [makeObject()];
+    const collection = [makeObject_Primitives()];
     results = [];
     for (const item of collection) {
-      results.push(<div>{mutate(item)}</div>);
+      results.push(
+        <div key={Stringify(item)}>{Stringify(mutateObject(item))}</div>
+      );
     }
     $[0] = results;
   } else {
@@ -40,5 +54,11 @@ function Component(props) {
   return t0;
 }
 
+export const FIXTURE_ENTRYPOINT = {
+  fn: Component,
+  params: [],
+  isComponent: true,
+};
+
 ```
       
\ No newline at end of file
diff --git a/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.tsx b/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.tsx
new file mode 100644
index 0000000000..d2bb3826c2
--- /dev/null
+++ b/compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/for-of-mutate.tsx
@@ -0,0 +1,18 @@
+import { makeObject_Primitives, mutate, Stringify } from "shared-runtime";
+
+function Component(_props) {
+  const collection = [makeObject_Primitives()];
+  const results = [];
+  for (const item of collection) {
+    results.push(
+      <div key={Stringify(item)}>{Stringify(mutate(item))}</div>
+    );
+  }
+  return <div>{results}</div>;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Component,
+  params: [],
+  isComponent: true,
+};
diff --git a/compiler/packages/sprout/src/SproutTodoFilter.ts b/compiler/packages/sprout/src/SproutTodoFilter.ts
index ca6b11afbf..1f4d4fb2d4 100644
--- a/compiler/packages/sprout/src/SproutTodoFilter.ts
+++ b/compiler/packages/sprout/src/SproutTodoFilter.ts
@@ -266,7 +266,6 @@ const skipFilter = new Set([
   "do-while-conditional-break",
   "do-while-early-unconditional-break",
   "fbt-params-complex-param-value",
-  "for-of-mutate",
   "function-expression-captures-value-later-frozen-jsx",
   "function-expression-maybe-mutates-hook-return-value",
   "function-expression-with-store-to-parameter",
diff --git a/compiler/packages/sprout/src/shared-runtime.ts b/compiler/packages/sprout/src/shared-runtime.ts
index 00dccb8714..c62335a454 100644
--- a/compiler/packages/sprout/src/shared-runtime.ts
+++ b/compiler/packages/sprout/src/shared-runtime.ts
@@ -21,6 +21,8 @@ import React from "react";
  * ```
  */
 
+export type StringKeyedObject = { [key: string]: unknown };
+
 export const CONST_STRING0 = "global string 0";
 export const CONST_STRING1 = "global string 1";
 export const CONST_STRING2 = "global string 2";
@@ -59,7 +61,7 @@ export function shallowCopy(obj: Object): object {
   return Object.assign({}, obj);
 }
 
-export function makeObject_Primitives(): object {
+export function makeObject_Primitives(): StringKeyedObject {
   return { a: 0, b: "value1", c: true };
 }