diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.expect.md b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.expect.md
index 82afa9c51de94..aeae54128b03a 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.expect.md
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.expect.md
@@ -19,15 +19,17 @@ function Component() {
   );
 }
 
-function cx(obj) {
-  const classes = [];
-  for (const [key, value] of Object.entries(obj)) {
-    if (value) {
-      classes.push(key);
+const cx = {
+  foo(obj) {
+    const classes = [];
+    for (const [key, value] of Object.entries(obj)) {
+      if (value) {
+        classes.push(key);
+      }
     }
-  }
-  return classes.join(' ');
-}
+    return classes.join(' ');
+  },
+};
 
 function useTheme() {
   return {
@@ -71,15 +73,17 @@ function Component() {
   return t1;
 }
 
-function cx(obj) {
-  const classes = [];
-  for (const [key, value] of Object.entries(obj)) {
-    if (value) {
-      classes.push(key);
+const cx = {
+  foo(obj) {
+    const classes = [];
+    for (const [key, value] of Object.entries(obj)) {
+      if (value) {
+        classes.push(key);
+      }
     }
-  }
-  return classes.join(" ");
-}
+    return classes.join(" ");
+  },
+};
 
 function useTheme() {
   return {
@@ -97,4 +101,4 @@ export const FIXTURE_ENTRYPOINT = {
 ```
       
 ### Eval output
-(kind: exception) cx.foo is not a function
\ No newline at end of file
+(kind: ok) <div class="styles/light styles/dark"></div>
\ No newline at end of file
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.js b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.js
index c0eb2f2dcd01c..fe7abb7cdf6ac 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.js
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/meta-isms/repro-cx-namespace-assigned-to-temporary.js
@@ -15,15 +15,17 @@ function Component() {
   );
 }
 
-function cx(obj) {
-  const classes = [];
-  for (const [key, value] of Object.entries(obj)) {
-    if (value) {
-      classes.push(key);
+const cx = {
+  foo(obj) {
+    const classes = [];
+    for (const [key, value] of Object.entries(obj)) {
+      if (value) {
+        classes.push(key);
+      }
     }
-  }
-  return classes.join(' ');
-}
+    return classes.join(' ');
+  },
+};
 
 function useTheme() {
   return {
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.expect.md b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.expect.md
index 7649bfd1fa574..dcade9000aa8e 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.expect.md
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.expect.md
@@ -4,6 +4,8 @@
 ```javascript
 import {CONST_TRUE, identity, shallowCopy} from 'shared-runtime';
 
+function mutate(_: unknown) {}
+
 /**
  * There are three values with their own scopes in this fixture.
  * - arr, whose mutable range extends to the `mutate(...)` call
@@ -45,6 +47,8 @@ export const FIXTURE_ENTRYPOINT = {
 import { c as _c } from "react/compiler-runtime";
 import { CONST_TRUE, identity, shallowCopy } from "shared-runtime";
 
+function mutate(_) {}
+
 /**
  * There are three values with their own scopes in this fixture.
  * - arr, whose mutable range extends to the `mutate(...)` call
@@ -91,4 +95,4 @@ export const FIXTURE_ENTRYPOINT = {
 ```
       
 ### Eval output
-(kind: exception) mutate is not defined
\ No newline at end of file
+(kind: ok) 
\ No newline at end of file
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.ts b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.ts
index 72a5fa2e1b3bb..fd4452bebbd86 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.ts
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/mutate-outer-scope-within-value-block.ts
@@ -1,5 +1,7 @@
 import {CONST_TRUE, identity, shallowCopy} from 'shared-runtime';
 
+function mutate(_: unknown) {}
+
 /**
  * There are three values with their own scopes in this fixture.
  * - arr, whose mutable range extends to the `mutate(...)` call
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.expect.md b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.expect.md
index 184779869e9a3..687d9565ba88c 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.expect.md
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.expect.md
@@ -6,6 +6,8 @@
 import {useCallback} from 'react';
 import {identity, useIdentity} from 'shared-runtime';
 
+function mutate(_: unknown) {}
+
 /**
  * Repro showing a manual memo whose declaration (useCallback's 1st argument)
  * is memoized, but not its dependency (x). In this case, `x`'s scope is pruned
@@ -33,6 +35,8 @@ import { c as _c } from "react/compiler-runtime"; // @validatePreserveExistingMe
 import { useCallback } from "react";
 import { identity, useIdentity } from "shared-runtime";
 
+function mutate(_) {}
+
 /**
  * Repro showing a manual memo whose declaration (useCallback's 1st argument)
  * is memoized, but not its dependency (x). In this case, `x`'s scope is pruned
@@ -62,4 +66,4 @@ export const FIXTURE_ENTRYPOINT = {
 ```
       
 ### Eval output
-(kind: exception) mutate is not defined
\ No newline at end of file
+(kind: ok) "[[ function params=0 ]]"
\ No newline at end of file
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.ts b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.ts
index 8fdd74ea571a2..23de8c2c259a9 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.ts
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useCallback-dep-scope-pruned.ts
@@ -2,6 +2,8 @@
 import {useCallback} from 'react';
 import {identity, useIdentity} from 'shared-runtime';
 
+function mutate(_: unknown) {}
+
 /**
  * Repro showing a manual memo whose declaration (useCallback's 1st argument)
  * is memoized, but not its dependency (x). In this case, `x`'s scope is pruned
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.expect.md b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.expect.md
index cd31d1fb0bb8a..01161d0941e5f 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.expect.md
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.expect.md
@@ -4,6 +4,8 @@
 ```javascript
 import {identity, makeObject_Primitives} from 'shared-runtime';
 
+function useHook() {}
+
 function useTest({cond}) {
   const val = makeObject_Primitives();
 
@@ -31,6 +33,8 @@ export const FIXTURE_ENTRYPOINT = {
 import { c as _c } from "react/compiler-runtime";
 import { identity, makeObject_Primitives } from "shared-runtime";
 
+function useHook() {}
+
 function useTest(t0) {
   const $ = _c(3);
   const { cond } = t0;
@@ -64,4 +68,4 @@ export const FIXTURE_ENTRYPOINT = {
 ```
       
 ### Eval output
-(kind: exception) useHook is not defined
\ No newline at end of file
+(kind: ok) {"a":0,"b":"value1","c":true}
\ No newline at end of file
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.ts b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.ts
index e1c62a3cf1384..017ea326b406a 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.ts
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/repro-allocating-ternary-test-instruction-scope.ts
@@ -1,5 +1,7 @@
 import {identity, makeObject_Primitives} from 'shared-runtime';
 
+function useHook() {}
+
 function useTest({cond}) {
   const val = makeObject_Primitives();
 
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.expect.md b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.expect.md
index 59563ea67fa8f..002bc6ee89bef 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.expect.md
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.expect.md
@@ -2,7 +2,7 @@
 ## Input
 
 ```javascript
-import {makeObject_Primitives} from 'shared-runtime';
+import {makeObject_Primitives, Stringify} from 'shared-runtime';
 
 function Component(props) {
   let useFeature = makeObject_Primitives();
@@ -32,7 +32,7 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime";
-import { makeObject_Primitives } from "shared-runtime";
+import { makeObject_Primitives, Stringify } from "shared-runtime";
 
 function Component(props) {
   const $ = _c(2);
@@ -75,4 +75,4 @@ export const FIXTURE_ENTRYPOINT = {
 ```
       
 ### Eval output
-(kind: exception) Stringify is not defined
\ No newline at end of file
+(kind: ok) <div>{"val":{"a":0,"b":"value1","c":true},"children":[2,"[[ cyclic ref *1 ]]",null]}</div>
\ No newline at end of file
diff --git a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.js b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.js
index 246abee218802..8715db07ece6d 100644
--- a/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.js
+++ b/compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/rules-of-hooks/allow-locals-named-like-hooks.js
@@ -1,4 +1,4 @@
-import {makeObject_Primitives} from 'shared-runtime';
+import {makeObject_Primitives, Stringify} from 'shared-runtime';
 
 function Component(props) {
   let useFeature = makeObject_Primitives();