Move remaining promotion of temporaries out of codegen

I realized that codegen still had a fallback for generating identifier nodes for 
unnamed temporaries. This PR updates codegen to throw if it needs to generate an 
identifier for a temporary, and updates earlier passes to promote temporaries to 
named values in all the cases that were missed: 

* BuildHIR needs to promote temporaries for temporaries in destructuring 
bindings and catch clause bindings 

* PromoteUsedTemporaries has to promote temporaries for destructured function 
parameters or function params that are context variables.

compiler/packages/babel-plugin-react-forget/src/HIR/BuildHIR.ts

@@ -44,6 +44,7 @@ import {
   Type,
   makeInstructionId,
   makeType,
+  promoteTemporaryToNamedIdentifier,
 } from "./HIR";
 import HIRBuilder, { Bindings } from "./HIRBuilder";
 import { BuiltInArrayId } from "./ObjectShape";
@@ -1215,6 +1216,7 @@ function lowerStatement(
           reactive: false,
           loc: handlerBindingPath.node.loc ?? GeneratedSource,
         };
+        promoteTemporaryToNamedIdentifier(place.identifier);
         lowerValueToTemporary(builder, {
           kind: "DeclareLocal",
           lvalue: {
@@ -3420,6 +3422,7 @@ function lowerAssignment(
               builder,
               element.node.loc ?? GeneratedSource
             );
+            promoteTemporaryToNamedIdentifier(temp.identifier);
             items.push({
               kind: "Spread",
               place: { ...temp },
@@ -3447,6 +3450,7 @@ function lowerAssignment(
             builder,
             element.node.loc ?? GeneratedSource
           );
+          promoteTemporaryToNamedIdentifier(temp.identifier);
           items.push({ ...temp });
           followups.push({ place: temp, path: element as NodePath<t.LVal> }); // TODO remove type cast
         }
@@ -3517,6 +3521,7 @@ function lowerAssignment(
               builder,
               property.node.loc ?? GeneratedSource
             );
+            promoteTemporaryToNamedIdentifier(temp.identifier);
             properties.push({
               kind: "Spread",
               place: { ...temp },
@@ -3597,6 +3602,7 @@ function lowerAssignment(
               builder,
               element.node.loc ?? GeneratedSource
             );
+            promoteTemporaryToNamedIdentifier(temp.identifier);
             properties.push({
               kind: "ObjectProperty",
               type: "property",

compiler/packages/babel-plugin-react-forget/src/ReactiveScopes/CodegenReactiveFunction.ts

@@ -2013,5 +2013,10 @@ function convertIdentifier(identifier: Identifier): t.Identifier {
   if (identifier.name !== null) {
     return t.identifier(identifier.name.value);
   }
-  return t.identifier(`t${identifier.id}`);
+  CompilerError.invariant(false, {
+    reason: `Expected temporaries to be promoted to named identifiers in an earlier pass`,
+    loc: GeneratedSource,
+    description: `identifier ${identifier.id} is unnamed`,
+    suggestions: null,
+  });
 }

compiler/packages/babel-plugin-react-forget/src/ReactiveScopes/PromoteUsedTemporaries.ts

@@ -11,8 +11,8 @@ import {
   Identifier,
   IdentifierId,
   InstructionId,
+  Place,
   ReactiveFunction,
-  ReactiveInstruction,
   ReactiveScopeBlock,
   ReactiveValue,
   promoteTemporaryJsxTagToNamedIdentifier,
@@ -45,11 +45,36 @@ class Visitor extends ReactiveFunctionVisitor<VisitorState> {
       }
     }
   }
-  override visitInstruction(
-    instruction: ReactiveInstruction,
+
+  override visitValue(
+    id: InstructionId,
+    value: ReactiveValue,
     state: VisitorState
   ): void {
-    this.traverseInstruction(instruction, state);
+    this.traverseValue(id, value, state);
+    if (value.kind === "FunctionExpression" || value.kind === "ObjectMethod") {
+      for (const operand of value.loweredFunc.func.params) {
+        const place = operand.kind === "Identifier" ? operand : operand.place;
+        if (place.identifier.name === null) {
+          promoteTemporary(place.identifier, state);
+        }
+      }
+    }
+  }
+
+  override visitReactiveFunctionValue(
+    _id: InstructionId,
+    _dependencies: Place[],
+    fn: ReactiveFunction,
+    state: VisitorState
+  ): void {
+    for (const operand of fn.params) {
+      const place = operand.kind === "Identifier" ? operand : operand.place;
+      if (place.identifier.name === null) {
+        promoteTemporary(place.identifier, state);
+      }
+    }
+    visitReactiveFunction(fn, this, state);
   }
 }
 
@@ -73,6 +98,12 @@ export function promoteUsedTemporaries(fn: ReactiveFunction): void {
   const state: VisitorState = {
     tags,
   };
+  for (const operand of fn.params) {
+    const place = operand.kind === "Identifier" ? operand : operand.place;
+    if (place.identifier.name === null) {
+      promoteTemporary(place.identifier, state);
+    }
+  }
   visitReactiveFunction(fn, new Visitor(), state);
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/array-pattern-params.expect.md

@@ -20,37 +20,37 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function component(t16) {
+function component(t0) {
   const $ = useMemoCache(7);
-  const [a, b] = t16;
-  let t0;
-  if ($[0] !== a) {
-    t0 = { a };
-    $[0] = a;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const y = t0;
+  const [a, b] = t0;
   let t1;
-  if ($[2] !== b) {
-    t1 = { b };
-    $[2] = b;
-    $[3] = t1;
+  if ($[0] !== a) {
+    t1 = { a };
+    $[0] = a;
+    $[1] = t1;
   } else {
-    t1 = $[3];
+    t1 = $[1];
   }
-  const z = t1;
+  const y = t1;
   let t2;
+  if ($[2] !== b) {
+    t2 = { b };
+    $[2] = b;
+    $[3] = t2;
+  } else {
+    t2 = $[3];
+  }
+  const z = t2;
+  let t3;
   if ($[4] !== y || $[5] !== z) {
-    t2 = [y, z];
+    t3 = [y, z];
     $[4] = y;
     $[5] = z;
-    $[6] = t2;
+    $[6] = t3;
   } else {
-    t2 = $[6];
+    t3 = $[6];
   }
-  return t2;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/bug.useMemo-deps-array-not-cleared.expect.md

@@ -24,22 +24,22 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function App(t25) {
+function App(t0) {
   const $ = useMemoCache(2);
-  const { text, hasDeps } = t25;
+  const { text, hasDeps } = t0;
 
   hasDeps ? null : [text];
-  let t0;
   let t1;
+  let t2;
   if ($[0] !== text) {
-    t1 = text.toUpperCase();
+    t2 = text.toUpperCase();
     $[0] = text;
-    $[1] = t1;
+    $[1] = t2;
   } else {
-    t1 = $[1];
+    t2 = $[1];
   }
-  t0 = t1;
-  const resolvedText = t0;
+  t1 = t2;
+  const resolvedText = t1;
   return resolvedText;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/capturing-function-member-expr-call.expect.md

@@ -20,41 +20,41 @@ function component({ mutator }) {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function component(t26) {
+function component(t0) {
   const $ = useMemoCache(7);
-  const { mutator } = t26;
-  let t0;
+  const { mutator } = t0;
+  let t1;
   if ($[0] !== mutator) {
-    t0 = () => {
+    t1 = () => {
       mutator.poke();
     };
     $[0] = mutator;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  const poke = t0;
-  let t1;
+  const poke = t1;
+  let t2;
   if ($[2] !== mutator.user) {
-    t1 = () => {
+    t2 = () => {
       mutator.user.hide();
     };
     $[2] = mutator.user;
-    $[3] = t1;
+    $[3] = t2;
   } else {
-    t1 = $[3];
+    t2 = $[3];
   }
-  const hide = t1;
-  let t2;
+  const hide = t2;
+  let t3;
   if ($[4] !== poke || $[5] !== hide) {
-    t2 = <Foo poke={poke} hide={hide} />;
+    t3 = <Foo poke={poke} hide={hide} />;
     $[4] = poke;
     $[5] = hide;
-    $[6] = t2;
+    $[6] = t3;
   } else {
-    t2 = $[6];
+    t3 = $[6];
   }
-  return t2;
+  return t3;
 }
 
 ```

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/component-declaration-basic.flow.expect.md

@@ -14,18 +14,18 @@ function shouldNotCompile() {}
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-export default function Foo(t7) {
+export default function Foo(t0) {
   const $ = useMemoCache(2);
-  const { bar } = t7;
-  let t0;
+  const { bar } = t0;
+  let t1;
   if ($[0] !== bar) {
-    t0 = <Bar bar={bar} />;
+    t1 = <Bar bar={bar} />;
     $[0] = bar;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 function shouldNotCompile() {}

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/context-variable-reactive-explicit-control-flow.expect.md

@@ -29,9 +29,9 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { invoke } from "shared-runtime";
 
-function Component(t21) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { shouldReassign } = t21;
+  const { shouldReassign } = t0;
   let x;
   if ($[0] !== shouldReassign) {
     x = null;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/context-variable-reactive-implicit-control-flow.expect.md

@@ -33,9 +33,9 @@ import { conditionalInvoke } from "shared-runtime";
 // same as context-variable-reactive-explicit-control-flow.js, but make
 // the control flow implicit
 
-function Component(t20) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { shouldReassign } = t20;
+  const { shouldReassign } = t0;
   let x;
   if ($[0] !== shouldReassign) {
     x = null;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/context-variable-reassigned-objectmethod.expect.md

@@ -30,9 +30,9 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { invoke } from "shared-runtime";
 
-function Component(t24) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { cond } = t24;
+  const { cond } = t0;
   let x;
   if ($[0] !== cond) {
     x = 2;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/context-variable-reassigned-reactive-capture.expect.md

@@ -27,9 +27,9 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { invoke } from "shared-runtime";
 
-function Component(t20) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t20;
+  const { value } = t0;
   let x;
   if ($[0] !== value) {
     x = null;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/context-variable-reassigned-two-lambdas.expect.md

@@ -35,9 +35,9 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { conditionalInvoke } from "shared-runtime";
 
-function Component(t32) {
+function Component(t0) {
   const $ = useMemoCache(3);
-  const { doReassign1, doReassign2 } = t32;
+  const { doReassign1, doReassign2 } = t0;
   let x;
   if ($[0] !== doReassign1 || $[1] !== doReassign2) {
     x = {};

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructure-array-assignment-to-context-var.expect.md

@@ -31,8 +31,8 @@ function Component(props) {
   const $ = useMemoCache(4);
   let x;
   if ($[0] !== props.value) {
-    const [t31] = props.value;
-    x = t31;
+    const [t0] = props.value;
+    x = t0;
     const foo = () => {
       x = identity(props.value[0]);
     };

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructure-object-assignment-to-context-var.expect.md

@@ -31,8 +31,8 @@ function Component(props) {
   const $ = useMemoCache(4);
   let x;
   if ($[0] !== props) {
-    const { x: t27 } = props;
-    x = t27;
+    const { x: t0 } = props;
+    x = t0;
     const foo = () => {
       x = identity(props.x);
     };

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructure-param-string-literal-key-invalid-identifier.expect.md

@@ -17,8 +17,8 @@ export const FIXTURE_ENTRYPOINT = {
 ## Code
 
 ```javascript
-function foo(t5) {
-  const { "data-foo-bar": dataTestID } = t5;
+function foo(t0) {
+  const { "data-foo-bar": dataTestID } = t0;
   return dataTestID;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructure-param-string-literal-key.expect.md

@@ -17,8 +17,8 @@ export const FIXTURE_ENTRYPOINT = {
 ## Code
 
 ```javascript
-function foo(t5) {
-  const { data: dataTestID } = t5;
+function foo(t0) {
+  const { data: dataTestID } = t0;
   return dataTestID;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-array-param-default.expect.md

@@ -17,9 +17,9 @@ export const FIXTURE_ENTRYPOINT = {
 ## Code
 
 ```javascript
-function Component(t13) {
-  const [t14] = t13;
-  const a = t14 === undefined ? 2 : t14;
+function Component(t0) {
+  const [t1] = t0;
+  const a = t1 === undefined ? 2 : t1;
   return a;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-assignment.expect.md

@@ -39,28 +39,28 @@ function foo(a, b, c) {
   let g;
   let n;
   let o;
-  const [t49, t50] = a;
-  d = t49;
-  const [t54] = t50;
-  const { e: t56 } = t54;
-  ({ f: g } = t56);
-  const { l: t61, o: t62 } = b;
-  const { m: t64 } = t61;
-  const [t66] = t64;
-  [n] = t66;
-  o = t62;
-  let t0;
+  const [t0, t1] = a;
+  d = t0;
+  const [t2] = t1;
+  const { e: t3 } = t2;
+  ({ f: g } = t3);
+  const { l: t4, o: t5 } = b;
+  const { m: t6 } = t4;
+  const [t7] = t6;
+  [n] = t7;
+  o = t5;
+  let t8;
   if ($[0] !== d || $[1] !== g || $[2] !== n || $[3] !== o) {
-    t0 = { d, g, n, o };
+    t8 = { d, g, n, o };
     $[0] = d;
     $[1] = g;
     $[2] = n;
     $[3] = o;
-    $[4] = t0;
+    $[4] = t8;
   } else {
-    t0 = $[4];
+    t8 = $[4];
   }
-  return t0;
+  return t8;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-default-at-array-hole.expect.md

@@ -19,8 +19,8 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 function Component(props) {
-  const [t18] = props.value;
-  const x = t18 === undefined ? 42 : t18;
+  const [t0] = props.value;
+  const x = t0 === undefined ? 42 : t0;
   return x;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-default-at-explicit-null.expect.md

@@ -19,8 +19,8 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 function Component(props) {
-  const [t18] = props.value;
-  const x = t18 === undefined ? 42 : t18;
+  const [t0] = props.value;
+  const x = t0 === undefined ? 42 : t0;
   return x;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-default-at-explicit-undefined.expect.md

@@ -19,8 +19,8 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 function Component(props) {
-  const [t18] = props.value;
-  const x = t18 === undefined ? 42 : t18;
+  const [t0] = props.value;
+  const x = t0 === undefined ? 42 : t0;
   return x;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-default-past-end-of-array.expect.md

@@ -19,8 +19,8 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 function Component(props) {
-  const [t18] = props.value;
-  const x = t18 === undefined ? 42 : t18;
+  const [t0] = props.value;
+  const x = t0 === undefined ? 42 : t0;
   return x;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-object-param-default.expect.md

@@ -17,9 +17,9 @@ export const FIXTURE_ENTRYPOINT = {
 ## Code
 
 ```javascript
-function Component(t13) {
-  const { a: t14 } = t13;
-  const a = t14 === undefined ? 2 : t14;
+function Component(t0) {
+  const { a: t1 } = t0;
+  const a = t1 === undefined ? 2 : t1;
   return a;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-same-property-identifier-names.expect.md

@@ -29,27 +29,27 @@ import { identity } from "shared-runtime";
 
 function Component(props) {
   const $ = useMemoCache(5);
-  const { x: t18, sameName: renamed } = props;
-  const { destructured } = t18;
-  let t0;
-  if ($[0] !== destructured) {
-    t0 = identity(destructured);
-    $[0] = destructured;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const sameName = t0;
+  const { x: t0, sameName: renamed } = props;
+  const { destructured } = t0;
   let t1;
+  if ($[0] !== destructured) {
+    t1 = identity(destructured);
+    $[0] = destructured;
+    $[1] = t1;
+  } else {
+    t1 = $[1];
+  }
+  const sameName = t1;
+  let t2;
   if ($[2] !== sameName || $[3] !== renamed) {
-    t1 = [sameName, renamed];
+    t2 = [sameName, renamed];
     $[2] = sameName;
     $[3] = renamed;
-    $[4] = t1;
+    $[4] = t2;
   } else {
-    t1 = $[4];
+    t2 = $[4];
   }
-  return t1;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring-with-conditional-as-default-value.expect.md

@@ -18,8 +18,8 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 function Component(props) {
-  const [t23] = props.y;
-  const x = t23 === undefined ? (true ? 1 : 0) : t23;
+  const [t0] = props.y;
+  const x = t0 === undefined ? (true ? 1 : 0) : t0;
   return x;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/destructuring.expect.md

@@ -63,21 +63,21 @@ function foo(a, b, c) {
     g = $[6];
   }
   const { f } = t2;
-  const { l: t51, p } = b;
-  const { m: t3 } = t51;
-  let t4;
+  const { l: t3, p } = b;
+  const { m: t4 } = t3;
+  let t5;
   let o;
-  if ($[7] !== t3) {
-    [t4, ...o] = t3;
-    $[7] = t3;
-    $[8] = t4;
+  if ($[7] !== t4) {
+    [t5, ...o] = t4;
+    $[7] = t4;
+    $[8] = t5;
     $[9] = o;
   } else {
-    t4 = $[8];
+    t5 = $[8];
     o = $[9];
   }
-  const [n] = t4;
-  let t5;
+  const [n] = t5;
+  let t6;
   if (
     $[10] !== d ||
     $[11] !== f ||
@@ -87,7 +87,7 @@ function foo(a, b, c) {
     $[15] !== o ||
     $[16] !== p
   ) {
-    t5 = [d, f, g, h, n, o, p];
+    t6 = [d, f, g, h, n, o, p];
     $[10] = d;
     $[11] = f;
     $[12] = g;
@@ -95,11 +95,11 @@ function foo(a, b, c) {
     $[14] = n;
     $[15] = o;
     $[16] = p;
-    $[17] = t5;
+    $[17] = t6;
   } else {
-    t5 = $[17];
+    t6 = $[17];
   }
-  return t5;
+  return t6;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/fbt/fbt-no-whitespace-btw-text-and-param.expect.md

@@ -27,22 +27,22 @@ import { unstable_useMemoCache as useMemoCache } from "react";
 import fbt from "fbt";
 
 const _ = fbt;
-function Component(t12) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t12;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
-    t0 = fbt._(
+    t1 = fbt._(
       "Before text{paramName}After text",
       [fbt._param("paramName", value)],
       { hk: "aKEGX" }
     );
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/fbt/fbt-preserve-whitespace.expect.md

@@ -28,12 +28,12 @@ import { unstable_useMemoCache as useMemoCache } from "react";
 import fbt from "fbt";
 
 const _ = fbt;
-function Component(t12) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t12;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
-    t0 = fbt._(
+    t1 = fbt._(
       "Before text {paramName}",
       [
         fbt._param(
@@ -45,11 +45,11 @@ function Component(t12) {
       { hk: "3z5SVE" }
     );
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/fbt/fbt-single-space-btw-param-and-text.expect.md

@@ -27,22 +27,22 @@ import { unstable_useMemoCache as useMemoCache } from "react";
 import fbt from "fbt";
 
 const _ = fbt;
-function Component(t12) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t12;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
-    t0 = fbt._(
+    t1 = fbt._(
       "Before text {paramName} after text",
       [fbt._param("paramName", value)],
       { hk: "26pxNm" }
     );
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/fbt/fbt-whitespace-around-param-value.expect.md

@@ -27,22 +27,22 @@ import { unstable_useMemoCache as useMemoCache } from "react";
 import fbt from "fbt";
 
 const _ = fbt;
-function Component(t14) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t14;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
-    t0 = fbt._(
+    t1 = fbt._(
       "Before text {paramName} after text",
       [fbt._param("paramName", value)],
       { hk: "26pxNm" }
     );
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/fbt/fbt-whitespace-within-text.expect.md

@@ -29,22 +29,22 @@ import { unstable_useMemoCache as useMemoCache } from "react";
 import fbt from "fbt";
 
 const _ = fbt;
-function Component(t12) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t12;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
-    t0 = fbt._(
+    t1 = fbt._(
       "Before text {paramName} after text more text and more and more and more and more and more and more and more and more and blah blah blah blah",
       [fbt._param("paramName", value)],
       { hk: "24ZPpO" }
     );
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/fbt/fbtparam-with-jsx-element-content.expect.md

@@ -28,12 +28,12 @@ function Component({ name, data, icon }) {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import fbt from "fbt";
 
-function Component(t33) {
+function Component(t0) {
   const $ = useMemoCache(4);
-  const { name, data, icon } = t33;
-  let t0;
+  const { name, data, icon } = t0;
+  let t1;
   if ($[0] !== name || $[1] !== icon || $[2] !== data) {
-    t0 = (
+    t1 = (
       <Text type="body4">
         {fbt._(
           "{item author}{icon}{=m2}",
@@ -64,11 +64,11 @@ function Component(t33) {
     $[0] = name;
     $[1] = icon;
     $[2] = data;
-    $[3] = t0;
+    $[3] = t1;
   } else {
-    t0 = $[3];
+    t1 = $[3];
   }
-  return t0;
+  return t1;
 }
 
 ```

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/flag-enable-emit-hook-guards.expect.md

@@ -53,49 +53,49 @@ import {
 } from "shared-runtime";
 
 const MyContext = createContext("my context value");
-function Component(t47) {
+function Component(t0) {
   const $ = useMemoCache(4);
   try {
     $dispatcherGuard(0);
-    const { value } = t47;
+    const { value } = t0;
     print(identity(CONST_STRING0));
-    let t0;
+    let t1;
     if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-      t0 = getNumber();
-      $[0] = t0;
+      t1 = getNumber();
+      $[0] = t1;
     } else {
-      t0 = $[0];
+      t1 = $[0];
     }
     const [state, setState] = (function () {
       try {
         $dispatcherGuard(2);
-        return useState(t0);
+        return useState(t1);
       } finally {
         $dispatcherGuard(3);
       }
     })();
     print(value, state);
-    let t1;
     let t2;
+    let t3;
     if ($[1] !== state) {
-      t1 = () => {
+      t2 = () => {
         if (state === 4) {
           setState(5);
         }
       };
 
-      t2 = [state];
+      t3 = [state];
       $[1] = state;
-      $[2] = t1;
-      $[3] = t2;
+      $[2] = t2;
+      $[3] = t3;
     } else {
-      t1 = $[2];
-      t2 = $[3];
+      t2 = $[2];
+      t3 = $[3];
     }
     (function () {
       try {
         $dispatcherGuard(2);
-        return useEffect(t1, t2);
+        return useEffect(t2, t3);
       } finally {
         $dispatcherGuard(3);
       }

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/function-param-assignment-pattern.expect.md

@@ -18,28 +18,28 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(t23, t0) {
+function Component(t0, t1) {
   const $ = useMemoCache(5);
-  const x = t23 === undefined ? "default" : t23;
-  let t1;
-  if ($[0] !== t0) {
-    t1 = t0 === undefined ? [{}] : t0;
-    $[0] = t0;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  const y = t1;
+  const x = t0 === undefined ? "default" : t0;
   let t2;
+  if ($[0] !== t1) {
+    t2 = t1 === undefined ? [{}] : t1;
+    $[0] = t1;
+    $[1] = t2;
+  } else {
+    t2 = $[1];
+  }
+  const y = t2;
+  let t3;
   if ($[2] !== x || $[3] !== y) {
-    t2 = [x, y];
+    t3 = [x, y];
     $[2] = x;
     $[3] = y;
-    $[4] = t2;
+    $[4] = t3;
   } else {
-    t2 = $[4];
+    t3 = $[4];
   }
-  return t2;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/hoisting-recursive-call-within-lambda.expect.md

@@ -26,11 +26,11 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Foo(t32) {
+function Foo(t0) {
   const $ = useMemoCache(2);
-  let t0;
+  let t1;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = (val) => {
+    t1 = (val) => {
       const fact = (x) => {
         if (x <= 0) {
           return 1;
@@ -39,19 +39,19 @@ function Foo(t32) {
       };
       return fact(val);
     };
-    $[0] = t0;
+    $[0] = t1;
   } else {
-    t0 = $[0];
+    t1 = $[0];
   }
-  const outer = t0;
-  let t1;
+  const outer = t1;
+  let t2;
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = outer(3);
-    $[1] = t1;
+    t2 = outer(3);
+    $[1] = t2;
   } else {
-    t1 = $[1];
+    t2 = $[1];
   }
-  return t1;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/hoisting-recursive-call.expect.md

@@ -25,10 +25,10 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Foo(t25) {
+function Foo(t0) {
   const $ = useMemoCache(2);
-  const { value } = t25;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
     const factorial = (x) => {
       if (x <= 1) {
@@ -38,13 +38,13 @@ function Foo(t25) {
       }
     };
 
-    t0 = factorial(value);
+    t1 = factorial(value);
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/hoisting-within-lambda.expect.md

@@ -24,29 +24,29 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(t22) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  let t0;
+  let t1;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = () => {
+    t1 = () => {
       const inner = () => x;
 
       const x = 3;
       return inner();
     };
-    $[0] = t0;
+    $[0] = t1;
   } else {
-    t0 = $[0];
+    t1 = $[0];
   }
-  const outer = t0;
-  let t1;
+  const outer = t1;
+  let t2;
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = <div>{outer()}</div>;
-    $[1] = t1;
+    t2 = <div>{outer()}</div>;
+    $[1] = t2;
   } else {
-    t1 = $[1];
+    t2 = $[1];
   }
-  return t1;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/infer-functions-component-with-ref-arg.expect.md

@@ -20,17 +20,17 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react"; // @compilationMode(infer)
 
-function Foo(t6, ref) {
+function Foo(t0, ref) {
   const $ = useMemoCache(2);
-  let t0;
+  let t1;
   if ($[0] !== ref) {
-    t0 = <div ref={ref} />;
+    t1 = <div ref={ref} />;
     $[0] = ref;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/jsx-attribute-with-jsx-element-value.expect.md

@@ -43,12 +43,12 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(t27) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { items } = t27;
-  let t0;
+  const { items } = t0;
+  let t1;
   if ($[0] !== items) {
-    t0 =
+    t1 =
       items.length > 0 ? (
         <Foo
           value={
@@ -61,44 +61,44 @@ function Component(t27) {
         />
       ) : null;
     $[0] = items;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
-function Foo(t5) {
-  const { value } = t5;
+function Foo(t0) {
+  const { value } = t0;
   return value;
 }
 
-function Bar(t6) {
+function Bar(t0) {
   const $ = useMemoCache(2);
-  const { children } = t6;
-  let t0;
+  const { children } = t0;
+  let t1;
   if ($[0] !== children) {
-    t0 = <div>{children}</div>;
+    t1 = <div>{children}</div>;
     $[0] = children;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
-function Item(t7) {
+function Item(t0) {
   const $ = useMemoCache(2);
-  const { item } = t7;
-  let t0;
+  const { item } = t0;
+  let t1;
   if ($[0] !== item.name) {
-    t0 = <div>{item.name}</div>;
+    t1 = <div>{item.name}</div>;
     $[0] = item.name;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/jsx-attribute-with-jsx-fragment-value.flow.expect.md

@@ -34,12 +34,12 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { Stringify } from "shared-runtime";
 
-function Component(t26) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { items } = t26;
-  let t0;
+  const { items } = t0;
+  let t1;
   if ($[0] !== items) {
-    t0 =
+    t1 =
       items.length > 0 ? (
         <Foo
           value={
@@ -52,25 +52,25 @@ function Component(t26) {
         />
       ) : null;
     $[0] = items;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
-function Foo(t6) {
+function Foo(t0) {
   const $ = useMemoCache(2);
-  const { value } = t6;
-  let t0;
+  const { value } = t0;
+  let t1;
   if ($[0] !== value) {
-    t0 = <div>{value}</div>;
+    t1 = <div>{value}</div>;
     $[0] = value;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/jsx-local-memberexpr-tag-conditional.expect.md

@@ -24,19 +24,19 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
 import * as SharedRuntime from "shared-runtime";
-function useFoo(t12) {
+function useFoo(t0) {
   const $ = useMemoCache(1);
-  const { cond } = t12;
+  const { cond } = t0;
   const MyLocal = SharedRuntime;
   if (cond) {
-    let t0;
+    let t1;
     if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-      t0 = <MyLocal.Text value={4} />;
-      $[0] = t0;
+      t1 = <MyLocal.Text value={4} />;
+      $[0] = t1;
     } else {
-      t0 = $[0];
+      t1 = $[0];
     }
-    return t0;
+    return t1;
   } else {
     return null;
   }

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/jsx-reactive-local-variable-member-expr.expect.md

@@ -26,20 +26,20 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import * as sharedRuntime from "shared-runtime";
 
-function Component(t13) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { something } = t13;
+  const { something } = t0;
 
   const Foo = something.StaticText1;
-  let t0;
+  let t1;
   if ($[0] !== Foo) {
-    t0 = () => <Foo />;
+    t1 = () => <Foo />;
     $[0] = Foo;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/maybe-mutate-object-in-callback.expect.md

@@ -62,8 +62,8 @@ function Component(props) {
   return t2;
 }
 
-function Foo(t5) {
-  const { children } = t5;
+function Foo(t0) {
+  const { children } = t0;
   return children;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/nested-function-with-param-as-captured-dep.expect.md

@@ -28,8 +28,8 @@ function Foo() {
   let t0;
   let t1;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = function a(t28) {
-      const x_0 = t28 === undefined ? () => {} : t28;
+    t1 = function a(t0) {
+      const x_0 = t0 === undefined ? () => {} : t0;
       return x_0;
     };
     $[0] = t1;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-literal-method-call-in-ternary-test.expect.md

@@ -36,8 +36,8 @@ import {
   CONST_STRING1,
 } from "shared-runtime";
 
-function useHook(t18) {
-  const { value } = t18;
+function useHook(t0) {
+  const { value } = t0;
   return {
     getValue() {
       return identity(value);

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-literal-method-derived-in-ternary-consequent.expect.md

@@ -27,12 +27,12 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { identity, createHookWrapper } from "shared-runtime";
 
-function useHook(t17) {
+function useHook(t0) {
   const $ = useMemoCache(3);
-  const { isCond, value } = t17;
-  let t0;
+  const { isCond, value } = t0;
+  let t1;
   if ($[0] !== isCond || $[1] !== value) {
-    t0 = isCond
+    t1 = isCond
       ? identity({
           getValue() {
             return value;
@@ -41,11 +41,11 @@ function useHook(t17) {
       : 42;
     $[0] = isCond;
     $[1] = value;
-    $[2] = t0;
+    $[2] = t1;
   } else {
-    t0 = $[2];
+    t1 = $[2];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-literal-method-in-ternary-consequent.expect.md

@@ -27,12 +27,12 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper } from "shared-runtime";
 
-function useHook(t15) {
+function useHook(t0) {
   const $ = useMemoCache(3);
-  const { isCond, value } = t15;
-  let t0;
+  const { isCond, value } = t0;
+  let t1;
   if ($[0] !== isCond || $[1] !== value) {
-    t0 = isCond
+    t1 = isCond
       ? {
           getValue() {
             return value;
@@ -41,11 +41,11 @@ function useHook(t15) {
       : 42;
     $[0] = isCond;
     $[1] = value;
-    $[2] = t0;
+    $[2] = t1;
   } else {
-    t0 = $[2];
+    t1 = $[2];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-literal-method-in-ternary-test.expect.md

@@ -34,8 +34,8 @@ import {
   CONST_STRING1,
 } from "shared-runtime";
 
-function useHook(t16) {
-  const { value } = t16;
+function useHook(t0) {
+  const { value } = t0;
   return {
     getValue() {
       return identity(value);

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-method-shorthand-aliased-mutate-after.expect.md

@@ -26,9 +26,9 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper, mutate, mutateAndReturn } from "shared-runtime";
-function useHook(t21) {
+function useHook(t0) {
   const $ = useMemoCache(2);
-  const { value } = t21;
+  const { value } = t0;
   let obj;
   if ($[0] !== value) {
     const x = mutateAndReturn({ value });

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-method-shorthand-derived-value.expect.md

@@ -25,31 +25,31 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper, mutateAndReturn } from "shared-runtime";
-function useHook(t18) {
+function useHook(t0) {
   const $ = useMemoCache(4);
-  const { value } = t18;
-  let t0;
-  if ($[0] !== value) {
-    t0 = mutateAndReturn({ value });
-    $[0] = value;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const x = t0;
+  const { value } = t0;
   let t1;
+  if ($[0] !== value) {
+    t1 = mutateAndReturn({ value });
+    $[0] = value;
+    $[1] = t1;
+  } else {
+    t1 = $[1];
+  }
+  const x = t1;
+  let t2;
   if ($[2] !== x) {
-    t1 = {
+    t2 = {
       getValue() {
         return x;
       },
     };
     $[2] = x;
-    $[3] = t1;
+    $[3] = t2;
   } else {
-    t1 = $[3];
+    t2 = $[3];
   }
-  const obj = t1;
+  const obj = t2;
   return obj;
 }
 

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-method-shorthand-mutated-after.expect.md

@@ -26,9 +26,9 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper, mutate, mutateAndReturn } from "shared-runtime";
-function useHook(t21) {
+function useHook(t0) {
   const $ = useMemoCache(2);
-  const { value } = t21;
+  const { value } = t0;
   let obj;
   if ($[0] !== value) {
     const x = mutateAndReturn({ value });

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-pattern-params.expect.md

@@ -20,37 +20,37 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function component(t16) {
+function component(t0) {
   const $ = useMemoCache(7);
-  const { a, b } = t16;
-  let t0;
-  if ($[0] !== a) {
-    t0 = { a };
-    $[0] = a;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const y = t0;
+  const { a, b } = t0;
   let t1;
-  if ($[2] !== b) {
-    t1 = { b };
-    $[2] = b;
-    $[3] = t1;
+  if ($[0] !== a) {
+    t1 = { a };
+    $[0] = a;
+    $[1] = t1;
   } else {
-    t1 = $[3];
+    t1 = $[1];
   }
-  const z = t1;
+  const y = t1;
   let t2;
+  if ($[2] !== b) {
+    t2 = { b };
+    $[2] = b;
+    $[3] = t2;
+  } else {
+    t2 = $[3];
+  }
+  const z = t2;
+  let t3;
   if ($[4] !== y || $[5] !== z) {
-    t2 = { y, z };
+    t3 = { y, z };
     $[4] = y;
     $[5] = z;
-    $[6] = t2;
+    $[6] = t3;
   } else {
-    t2 = $[6];
+    t3 = $[6];
   }
-  return t2;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-shorthand-method-1.expect.md

@@ -26,34 +26,34 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper } from "shared-runtime";
-function useHook(t16) {
+function useHook(t0) {
   const $ = useMemoCache(5);
-  const { a, b } = t16;
-  let t0;
+  const { a, b } = t0;
+  let t1;
   if ($[0] !== a) {
-    t0 = function () {
+    t1 = function () {
       return [a];
     };
     $[0] = a;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  let t1;
-  if ($[2] !== b || $[3] !== t0) {
-    t1 = {
-      x: t0,
+  let t2;
+  if ($[2] !== b || $[3] !== t1) {
+    t2 = {
+      x: t1,
       y() {
         return [b];
       },
     };
     $[2] = b;
-    $[3] = t0;
-    $[4] = t1;
+    $[3] = t1;
+    $[4] = t2;
   } else {
-    t1 = $[4];
+    t2 = $[4];
   }
-  return t1;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-shorthand-method-2.expect.md

@@ -27,42 +27,42 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper } from "shared-runtime";
 
-function useHook(t16) {
+function useHook(t0) {
   const $ = useMemoCache(8);
-  const { a, b, c } = t16;
-  let t0;
-  if ($[0] !== a) {
-    t0 = [a];
-    $[0] = a;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
+  const { a, b, c } = t0;
   let t1;
-  if ($[2] !== b || $[3] !== c || $[4] !== t0) {
-    let t2;
+  if ($[0] !== a) {
+    t1 = [a];
+    $[0] = a;
+    $[1] = t1;
+  } else {
+    t1 = $[1];
+  }
+  let t2;
+  if ($[2] !== b || $[3] !== c || $[4] !== t1) {
+    let t3;
     if ($[6] !== c) {
-      t2 = { c };
+      t3 = { c };
       $[6] = c;
-      $[7] = t2;
+      $[7] = t3;
     } else {
-      t2 = $[7];
+      t3 = $[7];
     }
-    t1 = {
-      x: t0,
+    t2 = {
+      x: t1,
       y() {
         return [b];
       },
-      z: t2,
+      z: t3,
     };
     $[2] = b;
     $[3] = c;
-    $[4] = t0;
-    $[5] = t1;
+    $[4] = t1;
+    $[5] = t2;
   } else {
-    t1 = $[5];
+    t2 = $[5];
   }
-  return t1;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/object-shorthand-method-nested.expect.md

@@ -34,13 +34,13 @@ export const FIXTURE_ENTRYPOINT = {
 import { useState, unstable_useMemoCache as useMemoCache } from "react";
 import { createHookWrapper } from "shared-runtime";
 
-function useHook(t21) {
+function useHook(t0) {
   const $ = useMemoCache(3);
-  const { value } = t21;
+  const { value } = t0;
   const [state] = useState(false);
-  let t0;
+  let t1;
   if ($[0] !== value || $[1] !== state) {
-    t0 = {
+    t1 = {
       getX() {
         return {
           a: [],
@@ -53,11 +53,11 @@ function useHook(t21) {
     };
     $[0] = value;
     $[1] = state;
-    $[2] = t0;
+    $[2] = t1;
   } else {
-    t0 = $[2];
+    t1 = $[2];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/reactive-control-dependency-phi-setState-type.expect.md

@@ -98,8 +98,8 @@ function Component(props) {
   return t1;
 }
 
-function Foo(t21) {
-  const { cond, setX, setY, setState } = t21;
+function Foo(t0) {
+  const { cond, setX, setY, setState } = t0;
   if (cond) {
     invariant(setState === setX, "Expected the correct setState function");
   } else {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/reactive-control-dependency-switch-condition.expect.md

@@ -44,9 +44,9 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 const GLOBAL = 42;
 
-function Component(t14) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { value } = t14;
+  const { value } = t0;
   let x;
   bb1: switch (GLOBAL) {
     case value: {
@@ -57,15 +57,15 @@ function Component(t14) {
       x = 2;
     }
   }
-  let t0;
+  let t1;
   if ($[0] !== x) {
-    t0 = [x];
+    t1 = [x];
     $[0] = x;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/reduce-reactive-cond-deps-cfg-nested-testifelse.expect.md

@@ -37,9 +37,9 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { setProperty } from "shared-runtime";
 
-function useFoo(t27) {
+function useFoo(t0) {
   const $ = useMemoCache(3);
-  const { o, branchCheck } = t27;
+  const { o, branchCheck } = t0;
   let x;
   if ($[0] !== branchCheck || $[1] !== o.value) {
     x = {};

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/ref-current-aliased-not-added-to-dep-2.expect.md

@@ -17,29 +17,29 @@ function Foo({ a }) {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react"; // @validateRefAccessDuringRender:false
-function Foo(t20) {
+function Foo(t0) {
   const $ = useMemoCache(4);
-  const { a } = t20;
+  const { a } = t0;
   const ref = useRef();
   const val = ref.current;
-  let t0;
-  if ($[0] !== a) {
-    t0 = { a, val };
-    $[0] = a;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const x = t0;
   let t1;
-  if ($[2] !== x) {
-    t1 = <VideoList videos={x} />;
-    $[2] = x;
-    $[3] = t1;
+  if ($[0] !== a) {
+    t1 = { a, val };
+    $[0] = a;
+    $[1] = t1;
   } else {
-    t1 = $[3];
+    t1 = $[1];
   }
-  return t1;
+  const x = t1;
+  let t2;
+  if ($[2] !== x) {
+    t2 = <VideoList videos={x} />;
+    $[2] = x;
+    $[3] = t2;
+  } else {
+    t2 = $[3];
+  }
+  return t2;
 }
 
 ```

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/ref-current-not-added-to-dep-2.expect.md

@@ -16,28 +16,28 @@ function Foo({ a }) {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react"; // @validateRefAccessDuringRender:false
-function Foo(t17) {
+function Foo(t0) {
   const $ = useMemoCache(4);
-  const { a } = t17;
+  const { a } = t0;
   const ref = useRef();
-  let t0;
-  if ($[0] !== a) {
-    t0 = { a, val: ref.current };
-    $[0] = a;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const x = t0;
   let t1;
-  if ($[2] !== x) {
-    t1 = <VideoList videos={x} />;
-    $[2] = x;
-    $[3] = t1;
+  if ($[0] !== a) {
+    t1 = { a, val: ref.current };
+    $[0] = a;
+    $[1] = t1;
   } else {
-    t1 = $[3];
+    t1 = $[1];
   }
-  return t1;
+  const x = t1;
+  let t2;
+  if ($[2] !== x) {
+    t2 = <VideoList videos={x} />;
+    $[2] = x;
+    $[3] = t2;
+  } else {
+    t2 = $[3];
+  }
+  return t2;
 }
 
 ```

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/repro-dce-circular-reference.expect.md

@@ -34,24 +34,24 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { identity } from "shared-runtime";
 
-function Component(t25) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { data } = t25;
+  const { data } = t0;
   let x = 0;
   for (const item of data) {
     const { current, other } = item;
     x = x + current;
     identity(other);
   }
-  let t0;
+  let t1;
   if ($[0] !== x) {
-    t0 = [x];
+    t1 = [x];
     $[0] = x;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/repro-duplicate-instruction-from-merge-consecutive-scopes.expect.md

@@ -28,31 +28,31 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { Stringify } from "shared-runtime";
 
-function Component(t23) {
+function Component(t0) {
   const $ = useMemoCache(3);
-  const { id } = t23;
-  let t0;
+  const { id } = t0;
+  let t1;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = <Stringify title={undefined} />;
-    $[0] = t0;
+    t1 = <Stringify title={undefined} />;
+    $[0] = t1;
   } else {
-    t0 = $[0];
+    t1 = $[0];
   }
-  const t1 = id ? true : false;
-  let t2;
-  if ($[1] !== t1) {
-    t2 = (
+  const t2 = id ? true : false;
+  let t3;
+  if ($[1] !== t2) {
+    t3 = (
       <>
-        {t0}
-        <Stringify title={t1} />
+        {t1}
+        <Stringify title={t2} />
       </>
     );
-    $[1] = t1;
-    $[2] = t2;
+    $[1] = t2;
+    $[2] = t3;
   } else {
-    t2 = $[2];
+    t3 = $[2];
   }
-  return t2;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/repro-false-positive-preserve-memoization-nonescaping-invoked-callback-escaping-return.expect.md

@@ -39,58 +39,58 @@ export const FIXTURE_ENTRYPOINT = {
 // @validatePreserveExistingMemoizationGuarantees @enableAssumeHooksFollowRulesOfReact @enableTransitivelyFreezeFunctionExpressions
 import { useCallback, unstable_useMemoCache as useMemoCache } from "react";
 
-function Component(t26) {
+function Component(t0) {
   const $ = useMemoCache(11);
-  const { entity, children } = t26;
-  let t0;
-  if ($[0] !== entity) {
-    t0 = () => entity != null;
-    $[0] = entity;
-    $[1] = t0;
-  } else {
-    t0 = $[1];
-  }
-  const showMessage = t0;
+  const { entity, children } = t0;
   let t1;
-  if ($[2] !== showMessage) {
-    t1 = showMessage();
-    $[2] = showMessage;
-    $[3] = t1;
+  if ($[0] !== entity) {
+    t1 = () => entity != null;
+    $[0] = entity;
+    $[1] = t1;
   } else {
-    t1 = $[3];
+    t1 = $[1];
   }
-  const shouldShowMessage = t1;
+  const showMessage = t1;
   let t2;
-  if ($[4] !== shouldShowMessage) {
-    t2 = <div>{shouldShowMessage}</div>;
-    $[4] = shouldShowMessage;
-    $[5] = t2;
+  if ($[2] !== showMessage) {
+    t2 = showMessage();
+    $[2] = showMessage;
+    $[3] = t2;
   } else {
-    t2 = $[5];
+    t2 = $[3];
   }
+  const shouldShowMessage = t2;
   let t3;
-  if ($[6] !== children) {
-    t3 = <div>{children}</div>;
-    $[6] = children;
-    $[7] = t3;
+  if ($[4] !== shouldShowMessage) {
+    t3 = <div>{shouldShowMessage}</div>;
+    $[4] = shouldShowMessage;
+    $[5] = t3;
   } else {
-    t3 = $[7];
+    t3 = $[5];
   }
   let t4;
-  if ($[8] !== t2 || $[9] !== t3) {
-    t4 = (
+  if ($[6] !== children) {
+    t4 = <div>{children}</div>;
+    $[6] = children;
+    $[7] = t4;
+  } else {
+    t4 = $[7];
+  }
+  let t5;
+  if ($[8] !== t3 || $[9] !== t4) {
+    t5 = (
       <div>
-        {t2}
         {t3}
+        {t4}
       </div>
     );
-    $[8] = t2;
-    $[9] = t3;
-    $[10] = t4;
+    $[8] = t3;
+    $[9] = t4;
+    $[10] = t5;
   } else {
-    t4 = $[10];
+    t5 = $[10];
   }
-  return t4;
+  return t5;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/repro-false-positive-preserve-memoization-nonescaping-value.expect.md

@@ -36,23 +36,23 @@ export const FIXTURE_ENTRYPOINT = {
 // @validatePreserveExistingMemoizationGuarantees @enableAssumeHooksFollowRulesOfReact @enableTransitivelyFreezeFunctionExpressions
 import { useCallback, unstable_useMemoCache as useMemoCache } from "react";
 
-function Component(t23) {
+function Component(t0) {
   const $ = useMemoCache(2);
-  const { entity, children } = t23;
+  const { entity, children } = t0;
 
   const showMessage = () => entity != null;
   if (!showMessage()) {
     return children;
   }
-  let t0;
+  let t1;
   if ($[0] !== children) {
-    t0 = <div>{children}</div>;
+    t1 = <div>{children}</div>;
     $[0] = children;
-    $[1] = t0;
+    $[1] = t1;
   } else {
-    t0 = $[1];
+    t1 = $[1];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/rest-param-with-array-pattern.expect.md

@@ -17,19 +17,19 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(foo, ...t9) {
+function Component(foo, ...t0) {
   const $ = useMemoCache(3);
-  const [bar] = t9;
-  let t0;
+  const [bar] = t0;
+  let t1;
   if ($[0] !== foo || $[1] !== bar) {
-    t0 = [foo, bar];
+    t1 = [foo, bar];
     $[0] = foo;
     $[1] = bar;
-    $[2] = t0;
+    $[2] = t1;
   } else {
-    t0 = $[2];
+    t1 = $[2];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/rest-param-with-identifier.expect.md

@@ -17,19 +17,19 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(foo, ...t9) {
+function Component(foo, ...t0) {
   const $ = useMemoCache(3);
-  const bar = t9;
-  let t0;
+  const bar = t0;
+  let t1;
   if ($[0] !== foo || $[1] !== bar) {
-    t0 = [foo, bar];
+    t1 = [foo, bar];
     $[0] = foo;
     $[1] = bar;
-    $[2] = t0;
+    $[2] = t1;
   } else {
-    t0 = $[2];
+    t1 = $[2];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/rest-param-with-object-spread-pattern.expect.md

@@ -17,19 +17,19 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(foo, ...t9) {
+function Component(foo, ...t0) {
   const $ = useMemoCache(3);
-  const { bar } = t9;
-  let t0;
+  const { bar } = t0;
+  let t1;
   if ($[0] !== foo || $[1] !== bar) {
-    t0 = [foo, bar];
+    t1 = [foo, bar];
     $[0] = foo;
     $[1] = bar;
-    $[2] = t0;
+    $[2] = t1;
   } else {
-    t0 = $[2];
+    t1 = $[2];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/rules-of-hooks/allow-props-named-like-hooks.expect.md

@@ -33,29 +33,29 @@ export const FIXTURE_ENTRYPOINT = {
 import { unstable_useMemoCache as useMemoCache } from "react";
 import { Stringify } from "shared-runtime";
 
-function Component(t29) {
+function Component(t0) {
   const $ = useMemoCache(8);
-  const { useFeature } = t29;
+  const { useFeature } = t0;
   let x;
   if (useFeature) {
-    const t0 = useFeature + useFeature;
-    let t1;
-    if ($[0] !== t0 || $[1] !== useFeature) {
-      t1 = [t0].push(-useFeature);
-      $[0] = t0;
+    const t1 = useFeature + useFeature;
+    let t2;
+    if ($[0] !== t1 || $[1] !== useFeature) {
+      t2 = [t1].push(-useFeature);
+      $[0] = t1;
       $[1] = useFeature;
-      $[2] = t1;
+      $[2] = t2;
     } else {
-      t1 = $[2];
+      t2 = $[2];
     }
-    x = t1;
+    x = t2;
   }
 
   const y = useFeature;
   const z = useFeature.useProperty;
-  let t0;
+  let t1;
   if ($[3] !== useFeature || $[4] !== x || $[5] !== y || $[6] !== z) {
-    t0 = (
+    t1 = (
       <Stringify val={useFeature}>
         {x}
         {y}
@@ -66,11 +66,11 @@ function Component(t29) {
     $[4] = x;
     $[5] = y;
     $[6] = z;
-    $[7] = t0;
+    $[7] = t1;
   } else {
-    t0 = $[7];
+    t1 = $[7];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/try-catch-alias-try-values.expect.md

@@ -39,8 +39,8 @@ function Component(props) {
     x = [];
     try {
       throwInput(x);
-    } catch (t27) {
-      const e = t27;
+    } catch (t0) {
+      const e = t0;
 
       y = e;
     }

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/try-catch-try-value-modified-in-catch-escaping.expect.md

@@ -38,8 +38,8 @@ function Component(props) {
       const y = [];
       y.push(props.y);
       throwInput(y);
-    } catch (t30) {
-      const e = t30;
+    } catch (t0) {
+      const e = t0;
       e.push(props.e);
       x = e;
     }

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/try-catch-try-value-modified-in-catch.expect.md

@@ -39,8 +39,8 @@ function Component(props) {
         const y = [];
         y.push(props.y);
         throwInput(y);
-      } catch (t25) {
-        const e = t25;
+      } catch (t1) {
+        const e = t1;
         e.push(props.e);
         t0 = e;
         break bb18;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/try-catch-with-catch-param.expect.md

@@ -39,8 +39,8 @@ function Component(props) {
       const x = [];
       try {
         throwInput(x);
-      } catch (t22) {
-        const e = t22;
+      } catch (t1) {
+        const e = t1;
         e.push(null);
         t0 = e;
         break bb11;

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/update-expression-on-function-parameter-1.expect.md

@@ -24,18 +24,18 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(t38) {
+function Component(t0) {
   const $ = useMemoCache(10);
-  let { a, b: t40, c: t41 } = t38;
-  let [b] = t40;
-  let { c } = t41;
+  let { a, b: t1, c: t2 } = t0;
+  let [b] = t1;
+  let { c } = t2;
   const d = a++;
   const e = ++a;
   const f = b--;
   const g = --b;
   const h = c++;
   const i = --c;
-  let t0;
+  let t3;
   if (
     $[0] !== a ||
     $[1] !== b ||
@@ -47,7 +47,7 @@ function Component(t38) {
     $[7] !== h ||
     $[8] !== i
   ) {
-    t0 = [a, b, c, d, e, f, g, h, i];
+    t3 = [a, b, c, d, e, f, g, h, i];
     $[0] = a;
     $[1] = b;
     $[2] = c;
@@ -57,11 +57,11 @@ function Component(t38) {
     $[6] = g;
     $[7] = h;
     $[8] = i;
-    $[9] = t0;
+    $[9] = t3;
   } else {
-    t0 = $[9];
+    t3 = $[9];
   }
-  return t0;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/update-expression-on-function-parameter-3.expect.md

@@ -20,22 +20,22 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(t14) {
+function Component(t0) {
   const $ = useMemoCache(4);
-  let { c } = t14;
+  let { c } = t0;
   const h = c++;
   const i = --c;
-  let t0;
+  let t1;
   if ($[0] !== c || $[1] !== h || $[2] !== i) {
-    t0 = [c, h, i];
+    t1 = [c, h, i];
     $[0] = c;
     $[1] = h;
     $[2] = i;
-    $[3] = t0;
+    $[3] = t1;
   } else {
-    t0 = $[3];
+    t1 = $[3];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/update-expression-on-function-parameter-4.expect.md

@@ -20,22 +20,22 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 import { unstable_useMemoCache as useMemoCache } from "react";
-function Component(t14) {
+function Component(t0) {
   const $ = useMemoCache(4);
-  let [b] = t14;
+  let [b] = t0;
   const f = b--;
   const g = --b;
-  let t0;
+  let t1;
   if ($[0] !== b || $[1] !== f || $[2] !== g) {
-    t0 = [b, f, g];
+    t1 = [b, f, g];
     $[0] = b;
     $[1] = f;
     $[2] = g;
-    $[3] = t0;
+    $[3] = t1;
   } else {
-    t0 = $[3];
+    t1 = $[3];
   }
-  return t0;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-forget/src/__tests__/fixtures/compiler/useCallback-set-ref-nested-property.expect.md

@@ -36,35 +36,35 @@ import {
 
 // Identical to useCallback-set-ref-nested-property-preserve-memoization,
 // but with a different set of compiler flags
-function Component(t27) {
+function Component(t0) {
   const $ = useMemoCache(4);
-  let t0;
-  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = { inner: null };
-    $[0] = t0;
-  } else {
-    t0 = $[0];
-  }
-  const ref = useRef(t0);
   let t1;
+  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
+    t1 = { inner: null };
+    $[0] = t1;
+  } else {
+    t1 = $[0];
+  }
+  const ref = useRef(t1);
+  let t2;
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = (event) => {
+    t2 = (event) => {
       ref.current.inner = event.target.value;
     };
-    $[1] = t1;
+    $[1] = t2;
   } else {
-    t1 = $[1];
+    t2 = $[1];
   }
-  const onChange = t1;
-  let t2;
+  const onChange = t2;
+  let t3;
   if ($[2] !== onChange) {
-    t2 = <input onChange={onChange} />;
+    t3 = <input onChange={onChange} />;
     $[2] = onChange;
-    $[3] = t2;
+    $[3] = t3;
   } else {
-    t2 = $[3];
+    t3 = $[3];
   }
-  return t2;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {