[compiler] Enable additional lints by default

Enable more validations to help catch bad patterns, but only in the linter. These rules are already enabled by default in the compiler _if_ violations could produce unsafe output.

.eslintrc.js

@@ -474,7 +474,7 @@ module.exports = {
     {
       files: ['packages/react-server-dom-turbopack/**/*.js'],
       globals: {
-        __turbopack_load__: 'readonly',
+        __turbopack_load_by_url__: 'readonly',
         __turbopack_require__: 'readonly',
       },
     },
@@ -622,6 +622,7 @@ module.exports = {
     ScrollTimeline: 'readonly',
     EventListenerOptionsOrUseCapture: 'readonly',
     FocusOptions: 'readonly',
+    OptionalEffectTiming: 'readonly',
 
     spyOnDev: 'readonly',
     spyOnDevAndProd: 'readonly',

.github/workflows/runtime_build_and_test.yml

@@ -6,6 +6,12 @@ on:
   pull_request:
     paths-ignore:
       - compiler/**
+  workflow_dispatch:
+    inputs:
+      commit_sha:
+        required: false
+        type: string
+        default: ''
 
 permissions: {}
 
@@ -28,7 +34,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - name: Check cache hit
         uses: actions/cache/restore@v4
         id: node_modules
@@ -69,7 +75,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - name: Check cache hit
         uses: actions/cache/restore@v4
         id: node_modules
@@ -117,7 +123,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/github-script@v7
         id: set-matrix
         with:
@@ -136,7 +142,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -166,7 +172,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -198,7 +204,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -254,7 +260,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -325,7 +331,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -420,7 +426,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -465,7 +471,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -493,7 +499,7 @@ jobs:
           merge-multiple: true
       - name: Display structure of build
         run: ls -R build
-      - run: echo ${{ github.event.pull_request.head.sha || github.sha }} >> build/COMMIT_SHA
+      - run: echo ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }} >> build/COMMIT_SHA
       - name: Scrape warning messages
         run: |
           mkdir -p ./build/__test_utils__
@@ -530,7 +536,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -570,7 +576,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -607,7 +613,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -648,7 +654,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -722,7 +728,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -779,7 +785,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -824,7 +830,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
+          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
       - uses: actions/setup-node@v4
         with:
           node-version-file: '.nvmrc'
@@ -873,7 +879,7 @@ jobs:
           node ./scripts/print-warnings/print-warnings.js > build/__test_utils__/ReactAllWarnings.js
       - name: Display structure of build for PR
         run: ls -R build
-      - run: echo ${{ github.event.pull_request.head.sha || github.sha }} >> build/COMMIT_SHA
+      - run: echo ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }} >> build/COMMIT_SHA
       - run: node ./scripts/tasks/danger
       - name: Archive sizebot results
         uses: actions/upload-artifact@v4

CHANGELOG.md

@@ -19,11 +19,11 @@ An Owner Stack is a string representing the components that are directly respons
 * Updated `useId` to use valid CSS selectors, changing format from `:r123:` to `«r123»`. [#32001](https://github.com/facebook/react/pull/32001)
 * Added a dev-only warning for null/undefined created in useEffect, useInsertionEffect, and useLayoutEffect. [#32355](https://github.com/facebook/react/pull/32355)
 * Fixed a bug where dev-only methods were exported in production builds. React.act is no longer available in production builds. [#32200](https://github.com/facebook/react/pull/32200)
-* Improved consistency across prod and dev to improve compatibility with Google Closure Complier and bindings [#31808](https://github.com/facebook/react/pull/31808)
+* Improved consistency across prod and dev to improve compatibility with Google Closure Compiler and bindings [#31808](https://github.com/facebook/react/pull/31808)
 * Improve passive effect scheduling for consistent task yielding. [#31785](https://github.com/facebook/react/pull/31785)
 * Fixed asserts in React Native when passChildrenWhenCloningPersistedNodes is enabled for OffscreenComponent rendering. [#32528](https://github.com/facebook/react/pull/32528)
 * Fixed component name resolution for Portal [#32640](https://github.com/facebook/react/pull/32640)
-* Added support for beforetoggle and toggle events on the dialog element. #32479 [#32479](https://github.com/facebook/react/pull/32479)
+* Added support for beforetoggle and toggle events on the dialog element. [#32479](https://github.com/facebook/react/pull/32479)
 
 ### React DOM
 * Fixed double warning when the `href` attribute is an empty string [#31783](https://github.com/facebook/react/pull/31783)

compiler/apps/playground/components/Editor/EditorImpl.tsx

@@ -44,6 +44,7 @@ import {
   PrintedCompilerPipelineValue,
 } from './Output';
 import {transformFromAstSync} from '@babel/core';
+import {LoggerEvent} from 'babel-plugin-react-compiler/dist/Entrypoint';
 
 function parseInput(
   input: string,
@@ -143,6 +144,7 @@ const COMMON_HOOKS: Array<[string, Hook]> = [
 function compile(source: string): [CompilerOutput, 'flow' | 'typescript'] {
   const results = new Map<string, Array<PrintedCompilerPipelineValue>>();
   const error = new CompilerError();
+  const otherErrors: Array<CompilerErrorDetail> = [];
   const upsert: (result: PrintedCompilerPipelineValue) => void = result => {
     const entry = results.get(result.name);
     if (Array.isArray(entry)) {
@@ -210,7 +212,11 @@ function compile(source: string): [CompilerOutput, 'flow' | 'typescript'] {
       },
       logger: {
         debugLogIRs: logIR,
-        logEvent: () => {},
+        logEvent: (_filename: string | null, event: LoggerEvent) => {
+          if (event.kind === 'CompileError') {
+            otherErrors.push(new CompilerErrorDetail(event.detail));
+          }
+        },
       },
     });
     transformOutput = invokeCompiler(source, language, opts);
@@ -237,6 +243,10 @@ function compile(source: string): [CompilerOutput, 'flow' | 'typescript'] {
       );
     }
   }
+  // Only include logger errors if there weren't other errors
+  if (!error.hasErrors() && otherErrors.length !== 0) {
+    otherErrors.forEach(e => error.push(e));
+  }
   if (error.hasErrors()) {
     return [{kind: 'err', results, error: error}, language];
   }

compiler/packages/babel-plugin-react-compiler/src/CompilerError.ts

@@ -15,6 +15,11 @@ export enum ErrorSeverity {
    * misunderstanding on the user’s part.
    */
   InvalidJS = 'InvalidJS',
+  /**
+   * JS syntax that is not supported and which we do not plan to support. Developers should
+   * rewrite to use supported forms.
+   */
+  UnsupportedJS = 'UnsupportedJS',
   /**
    * Code that breaks the rules of React.
    */
@@ -241,12 +246,16 @@ export class CompilerError extends Error {
         case ErrorSeverity.InvalidJS:
         case ErrorSeverity.InvalidReact:
         case ErrorSeverity.InvalidConfig:
+        case ErrorSeverity.UnsupportedJS: {
           return true;
+        }
         case ErrorSeverity.CannotPreserveMemoization:
-        case ErrorSeverity.Todo:
+        case ErrorSeverity.Todo: {
           return false;
-        default:
+        }
+        default: {
           assertExhaustive(detail.severity, 'Unhandled error severity');
+        }
       }
     });
   }

compiler/packages/babel-plugin-react-compiler/src/Entrypoint/Pipeline.ts

@@ -94,7 +94,7 @@ import {validateLocalsNotReassignedAfterRender} from '../Validation/ValidateLoca
 import {outlineFunctions} from '../Optimization/OutlineFunctions';
 import {propagatePhiTypes} from '../TypeInference/PropagatePhiTypes';
 import {lowerContextAccess} from '../Optimization/LowerContextAccess';
-import {validateNoSetStateInPassiveEffects} from '../Validation/ValidateNoSetStateInPassiveEffects';
+import {validateNoSetStateInEffects} from '../Validation/ValidateNoSetStateInEffects';
 import {validateNoJSXInTryStatement} from '../Validation/ValidateNoJSXInTryStatement';
 import {propagateScopeDependenciesHIR} from '../HIR/PropagateScopeDependenciesHIR';
 import {outlineJSX} from '../Optimization/OutlineJsx';
@@ -292,8 +292,8 @@ function runWithEnvironment(
       validateNoSetStateInRender(hir).unwrap();
     }
 
-    if (env.config.validateNoSetStateInPassiveEffects) {
-      env.logErrors(validateNoSetStateInPassiveEffects(hir));
+    if (env.config.validateNoSetStateInEffects) {
+      env.logErrors(validateNoSetStateInEffects(hir));
     }
 
     if (env.config.validateNoJSXInTryStatements) {

compiler/packages/babel-plugin-react-compiler/src/Entrypoint/ValidateNoUntransformedReferences.ts

@@ -35,8 +35,41 @@ function throwInvalidReact(
   });
   CompilerError.throw(detail);
 }
+
+function isAutodepsSigil(
+  arg: NodePath<t.ArgumentPlaceholder | t.SpreadElement | t.Expression>,
+): boolean {
+  // Check for AUTODEPS identifier imported from React
+  if (arg.isIdentifier() && arg.node.name === 'AUTODEPS') {
+    const binding = arg.scope.getBinding(arg.node.name);
+    if (binding && binding.path.isImportSpecifier()) {
+      const importSpecifier = binding.path.node as t.ImportSpecifier;
+      if (importSpecifier.imported.type === 'Identifier') {
+        return (importSpecifier.imported as t.Identifier).name === 'AUTODEPS';
+      }
+    }
+    return false;
+  }
+
+  // Check for React.AUTODEPS member expression
+  if (arg.isMemberExpression() && !arg.node.computed) {
+    const object = arg.get('object');
+    const property = arg.get('property');
+
+    if (
+      object.isIdentifier() &&
+      object.node.name === 'React' &&
+      property.isIdentifier() &&
+      property.node.name === 'AUTODEPS'
+    ) {
+      return true;
+    }
+  }
+
+  return false;
+}
 function assertValidEffectImportReference(
-  numArgs: number,
+  autodepsIndex: number,
   paths: Array<NodePath<t.Node>>,
   context: TraversalState,
 ): void {
@@ -49,11 +82,10 @@ function assertValidEffectImportReference(
         maybeCalleeLoc != null &&
         context.inferredEffectLocations.has(maybeCalleeLoc);
       /**
-       * Only error on untransformed references of the form `useMyEffect(...)`
-       * or `moduleNamespace.useMyEffect(...)`, with matching argument counts.
-       * TODO: do we also want a mode to also hard error on non-call references?
+       * Error on effect calls that still have AUTODEPS in their args
        */
-      if (args.length === numArgs && !hasInferredEffect) {
+      const hasAutodepsArg = args.some(isAutodepsSigil);
+      if (hasAutodepsArg && !hasInferredEffect) {
         const maybeErrorDiagnostic = matchCompilerDiagnostic(
           path,
           context.transformErrors,
@@ -128,12 +160,12 @@ export default function validateNoUntransformedReferences(
   if (env.inferEffectDependencies) {
     for (const {
       function: {source, importSpecifierName},
-      numRequiredArgs,
+      autodepsIndex,
     } of env.inferEffectDependencies) {
       const module = getOrInsertWith(moduleLoadChecks, source, () => new Map());
       module.set(
         importSpecifierName,
-        assertValidEffectImportReference.bind(null, numRequiredArgs),
+        assertValidEffectImportReference.bind(null, autodepsIndex),
       );
     }
   }

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

@@ -1355,13 +1355,85 @@ function lowerStatement(
 
       return;
     }
-    case 'TypeAlias':
-    case 'TSInterfaceDeclaration':
-    case 'TSTypeAliasDeclaration': {
-      // We do not preserve type annotations/syntax through transformation
+    case 'WithStatement': {
+      builder.errors.push({
+        reason: `JavaScript 'with' syntax is not supported`,
+        description: `'with' syntax is considered deprecated and removed from JavaScript standards, consider alternatives`,
+        severity: ErrorSeverity.UnsupportedJS,
+        loc: stmtPath.node.loc ?? null,
+        suggestions: null,
+      });
+      lowerValueToTemporary(builder, {
+        kind: 'UnsupportedNode',
+        loc: stmtPath.node.loc ?? GeneratedSource,
+        node: stmtPath.node,
+      });
+      return;
+    }
+    case 'ClassDeclaration': {
+      /**
+       * In theory we could support inline class declarations, but this is rare enough in practice
+       * and complex enough to support that we don't anticipate supporting anytime soon. Developers
+       * are encouraged to lift classes out of component/hook declarations.
+       */
+      builder.errors.push({
+        reason: 'Inline `class` declarations are not supported',
+        description: `Move class declarations outside of components/hooks`,
+        severity: ErrorSeverity.UnsupportedJS,
+        loc: stmtPath.node.loc ?? null,
+        suggestions: null,
+      });
+      lowerValueToTemporary(builder, {
+        kind: 'UnsupportedNode',
+        loc: stmtPath.node.loc ?? GeneratedSource,
+        node: stmtPath.node,
+      });
+      return;
+    }
+    case 'EnumDeclaration':
+    case 'TSEnumDeclaration': {
+      lowerValueToTemporary(builder, {
+        kind: 'UnsupportedNode',
+        loc: stmtPath.node.loc ?? GeneratedSource,
+        node: stmtPath.node,
+      });
+      return;
+    }
+    case 'ExportAllDeclaration':
+    case 'ExportDefaultDeclaration':
+    case 'ExportNamedDeclaration':
+    case 'ImportDeclaration':
+    case 'TSExportAssignment':
+    case 'TSImportEqualsDeclaration': {
+      builder.errors.push({
+        reason:
+          'JavaScript `import` and `export` statements may only appear at the top level of a module',
+        severity: ErrorSeverity.InvalidJS,
+        loc: stmtPath.node.loc ?? null,
+        suggestions: null,
+      });
+      lowerValueToTemporary(builder, {
+        kind: 'UnsupportedNode',
+        loc: stmtPath.node.loc ?? GeneratedSource,
+        node: stmtPath.node,
+      });
+      return;
+    }
+    case 'TSNamespaceExportDeclaration': {
+      builder.errors.push({
+        reason:
+          'TypeScript `namespace` statements may only appear at the top level of a module',
+        severity: ErrorSeverity.InvalidJS,
+        loc: stmtPath.node.loc ?? null,
+        suggestions: null,
+      });
+      lowerValueToTemporary(builder, {
+        kind: 'UnsupportedNode',
+        loc: stmtPath.node.loc ?? GeneratedSource,
+        node: stmtPath.node,
+      });
       return;
     }
-    case 'ClassDeclaration':
     case 'DeclareClass':
     case 'DeclareExportAllDeclaration':
     case 'DeclareExportDeclaration':
@@ -1372,31 +1444,14 @@ function lowerStatement(
     case 'DeclareOpaqueType':
     case 'DeclareTypeAlias':
     case 'DeclareVariable':
-    case 'EnumDeclaration':
-    case 'ExportAllDeclaration':
-    case 'ExportDefaultDeclaration':
-    case 'ExportNamedDeclaration':
-    case 'ImportDeclaration':
     case 'InterfaceDeclaration':
     case 'OpaqueType':
     case 'TSDeclareFunction':
-    case 'TSEnumDeclaration':
-    case 'TSExportAssignment':
-    case 'TSImportEqualsDeclaration':
+    case 'TSInterfaceDeclaration':
     case 'TSModuleDeclaration':
-    case 'TSNamespaceExportDeclaration':
-    case 'WithStatement': {
-      builder.errors.push({
-        reason: `(BuildHIR::lowerStatement) Handle ${stmtPath.type} statements`,
-        severity: ErrorSeverity.Todo,
-        loc: stmtPath.node.loc ?? null,
-        suggestions: null,
-      });
-      lowerValueToTemporary(builder, {
-        kind: 'UnsupportedNode',
-        loc: stmtPath.node.loc ?? GeneratedSource,
-        node: stmtPath.node,
-      });
+    case 'TSTypeAliasDeclaration':
+    case 'TypeAlias': {
+      // We do not preserve type annotations/syntax through transformation
       return;
     }
     default: {
@@ -2946,6 +3001,8 @@ function isReorderableExpression(
         }
       }
     }
+    case 'TSAsExpression':
+    case 'TSNonNullExpression':
     case 'TypeCastExpression': {
       return isReorderableExpression(
         builder,
@@ -3502,6 +3559,16 @@ function lowerIdentifier(
       return place;
     }
     default: {
+      if (binding.kind === 'Global' && binding.name === 'eval') {
+        builder.errors.push({
+          reason: `The 'eval' function is not supported`,
+          description:
+            'Eval is an anti-pattern in JavaScript, and the code executed cannot be evaluated by React Compiler',
+          severity: ErrorSeverity.UnsupportedJS,
+          loc: exprPath.node.loc ?? null,
+          suggestions: null,
+        });
+      }
       return lowerValueToTemporary(builder, {
         kind: 'LoadGlobal',
         binding,

compiler/packages/babel-plugin-react-compiler/src/HIR/Environment.ts

@@ -265,21 +265,19 @@ export const EnvironmentConfigSchema = z.object({
    *   {
    *     module: 'react',
    *     imported: 'useEffect',
-   *     numRequiredArgs: 1,
+   *     autodepsIndex: 1,
    *   },{
    *     module: 'MyExperimentalEffectHooks',
    *     imported: 'useExperimentalEffect',
-   *     numRequiredArgs: 2,
+   *     autodepsIndex: 2,
    *   },
    * ]
    * would insert dependencies for calls of `useEffect` imported from `react` and calls of
    * useExperimentalEffect` from `MyExperimentalEffectHooks`.
    *
-   * `numRequiredArgs` tells the compiler the amount of arguments required to append a dependency
-   *  array to the end of the call. With the configuration above, we'd insert dependencies for
-   *  `useEffect` if it is only given a single argument and it would be appended to the argument list.
-   *
-   * numRequiredArgs must always be greater than 0, otherwise there is no function to analyze for dependencies
+   * `autodepsIndex` tells the compiler which index we expect the AUTODEPS to appear in.
+   *  With the configuration above, we'd insert dependencies for `useEffect` if it has two
+   *  arguments, and the second is AUTODEPS.
    *
    * Still experimental.
    */
@@ -288,7 +286,7 @@ export const EnvironmentConfigSchema = z.object({
       z.array(
         z.object({
           function: ExternalFunctionSchema,
-          numRequiredArgs: z.number().min(1, 'numRequiredArgs must be > 0'),
+          autodepsIndex: z.number().min(1, 'autodepsIndex must be > 0'),
         }),
       ),
     )
@@ -320,10 +318,10 @@ export const EnvironmentConfigSchema = z.object({
   validateNoSetStateInRender: z.boolean().default(true),
 
   /**
-   * Validates that setState is not called directly within a passive effect (useEffect).
+   * Validates that setState is not called synchronously within an effect (useEffect and friends).
    * Scheduling a setState (with an event listener, subscription, etc) is valid.
    */
-  validateNoSetStateInPassiveEffects: z.boolean().default(false),
+  validateNoSetStateInEffects: z.boolean().default(false),
 
   /**
    * Validates against creating JSX within a try block and recommends using an error boundary

compiler/packages/babel-plugin-react-compiler/src/HIR/Globals.ts

@@ -9,6 +9,7 @@ import {Effect, ValueKind, ValueReason} from './HIR';
 import {
   BUILTIN_SHAPES,
   BuiltInArrayId,
+  BuiltInAutodepsId,
   BuiltInFireFunctionId,
   BuiltInFireId,
   BuiltInMapId,
@@ -780,6 +781,7 @@ const REACT_APIS: Array<[string, BuiltInType]> = [
       BuiltInUseEffectEventId,
     ),
   ],
+  ['AUTODEPS', addObject(DEFAULT_SHAPES, BuiltInAutodepsId, [])],
 ];
 
 TYPED_GLOBALS.push(

compiler/packages/babel-plugin-react-compiler/src/HIR/MergeConsecutiveBlocks.ts

@@ -107,6 +107,17 @@ export function mergeConsecutiveBlocks(fn: HIRFunction): void {
     merged.merge(block.id, predecessorId);
     fn.body.blocks.delete(block.id);
   }
+  for (const [, block] of fn.body.blocks) {
+    for (const phi of block.phis) {
+      for (const [predecessorId, operand] of phi.operands) {
+        const mapped = merged.get(predecessorId);
+        if (mapped !== predecessorId) {
+          phi.operands.delete(predecessorId);
+          phi.operands.set(mapped, operand);
+        }
+      }
+    }
+  }
   markPredecessors(fn.body);
   for (const [, {terminal}] of fn.body.blocks) {
     if (terminalHasFallthrough(terminal)) {

compiler/packages/babel-plugin-react-compiler/src/HIR/ObjectShape.ts

@@ -384,6 +384,7 @@ export const BuiltInFireId = 'BuiltInFire';
 export const BuiltInFireFunctionId = 'BuiltInFireFunction';
 export const BuiltInUseEffectEventId = 'BuiltInUseEffectEvent';
 export const BuiltinEffectEventId = 'BuiltInEffectEventFunction';
+export const BuiltInAutodepsId = 'BuiltInAutoDepsId';
 
 // See getReanimatedModuleType() in Globals.ts — this is part of supporting Reanimated's ref-like types
 export const ReanimatedSharedValueId = 'ReanimatedSharedValueId';

compiler/packages/babel-plugin-react-compiler/src/HIR/PrintHIR.ts

@@ -5,7 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import generate from '@babel/generator';
 import {CompilerError} from '../CompilerError';
 import {printReactiveScopeSummary} from '../ReactiveScopes/PrintReactiveFunction';
 import DisjointSet from '../Utils/DisjointSet';
@@ -466,7 +465,7 @@ export function printInstructionValue(instrValue: ReactiveValue): string {
       break;
     }
     case 'UnsupportedNode': {
-      value = `UnsupportedNode(${generate(instrValue.node).code})`;
+      value = `UnsupportedNode ${instrValue.node.type}`;
       break;
     }
     case 'LoadLocal': {
@@ -715,7 +714,7 @@ export function printInstructionValue(instrValue: ReactiveValue): string {
       break;
     }
     case 'FinishMemoize': {
-      value = `FinishMemoize decl=${printPlace(instrValue.decl)}`;
+      value = `FinishMemoize decl=${printPlace(instrValue.decl)}${instrValue.pruned ? ' pruned' : ''}`;
       break;
     }
     default: {

compiler/packages/babel-plugin-react-compiler/src/Inference/InferEffectDependencies.ts

@@ -57,6 +57,8 @@ import {
 } from '../HIR/visitors';
 import {empty} from '../Utils/Stack';
 import {getOrInsertWith} from '../Utils/utils';
+import {deadCodeElimination} from '../Optimization';
+import {BuiltInAutodepsId} from '../HIR/ObjectShape';
 
 /**
  * Infers reactive dependencies captured by useEffect lambdas and adds them as
@@ -77,7 +79,7 @@ export function inferEffectDependencies(fn: HIRFunction): void {
     );
     moduleTargets.set(
       effectTarget.function.importSpecifierName,
-      effectTarget.numRequiredArgs,
+      effectTarget.autodepsIndex,
     );
   }
   const autodepFnLoads = new Map<IdentifierId, number>();
@@ -135,7 +137,6 @@ export function inferEffectDependencies(fn: HIRFunction): void {
         }
       } else if (value.kind === 'LoadGlobal') {
         loadGlobals.add(lvalue.identifier.id);
-
         /*
          * TODO: Handle properties on default exports, like
          * import React from 'react';
@@ -169,8 +170,22 @@ export function inferEffectDependencies(fn: HIRFunction): void {
       ) {
         const callee =
           value.kind === 'CallExpression' ? value.callee : value.property;
+
+        const autodepsArgIndex = value.args.findIndex(
+          arg =>
+            arg.kind === 'Identifier' &&
+            arg.identifier.type.kind === 'Object' &&
+            arg.identifier.type.shapeId === BuiltInAutodepsId,
+        );
+        const autodepsArgExpectedIndex = autodepFnLoads.get(
+          callee.identifier.id,
+        );
+
         if (
-          value.args.length === autodepFnLoads.get(callee.identifier.id) &&
+          value.args.length > 0 &&
+          autodepsArgExpectedIndex != null &&
+          autodepsArgIndex === autodepsArgExpectedIndex &&
+          autodepFnLoads.has(callee.identifier.id) &&
           value.args[0].kind === 'Identifier'
         ) {
           // We have a useEffect call with no deps array, so we need to infer the deps
@@ -260,7 +275,10 @@ export function inferEffectDependencies(fn: HIRFunction): void {
                 effects: null,
               },
             });
-            value.args.push({...depsPlace, effect: Effect.Freeze});
+            value.args[autodepsArgIndex] = {
+              ...depsPlace,
+              effect: Effect.Freeze,
+            };
             fn.env.inferredEffectLocations.add(callee.loc);
           } else if (loadGlobals.has(value.args[0].identifier.id)) {
             // Global functions have no reactive dependencies, so we can insert an empty array
@@ -275,7 +293,10 @@ export function inferEffectDependencies(fn: HIRFunction): void {
                 effects: null,
               },
             });
-            value.args.push({...depsPlace, effect: Effect.Freeze});
+            value.args[autodepsArgIndex] = {
+              ...depsPlace,
+              effect: Effect.Freeze,
+            };
             fn.env.inferredEffectLocations.add(callee.loc);
           }
         } else if (
@@ -323,6 +344,7 @@ export function inferEffectDependencies(fn: HIRFunction): void {
     // Renumber instructions and fix scope ranges
     markInstructionIds(fn.body);
     fixScopeAndIdentifierRanges(fn.body);
+    deadCodeElimination(fn);
 
     fn.env.hasInferredEffect = true;
   }
@@ -408,6 +430,7 @@ function rewriteSplices(
   rewriteBlocks.push(currBlock);
 
   let cursor = 0;
+
   for (const rewrite of splices) {
     while (originalInstrs[cursor].id < rewrite.location) {
       CompilerError.invariant(
@@ -429,7 +452,7 @@ function rewriteSplices(
 
     if (rewrite.kind === 'instr') {
       currBlock.instructions.push(rewrite.value);
-    } else {
+    } else if (rewrite.kind === 'block') {
       const {entry, blocks} = rewrite.value;
       const entryBlock = blocks.get(entry)!;
       // splice in all instructions from the entry block

compiler/packages/babel-plugin-react-compiler/src/Inference/InlineImmediatelyInvokedFunctionExpressions.ts

@@ -11,6 +11,7 @@ import {
   Environment,
   FunctionExpression,
   GeneratedSource,
+  GotoTerminal,
   GotoVariant,
   HIRFunction,
   IdentifierId,
@@ -19,6 +20,7 @@ import {
   Place,
   isStatementBlockKind,
   makeInstructionId,
+  mergeConsecutiveBlocks,
   promoteTemporary,
   reversePostorderBlocks,
 } from '../HIR';
@@ -73,6 +75,10 @@ import {retainWhere} from '../Utils/utils';
  * - All return statements in the original function expression are replaced with a
  *    StoreLocal to the temporary we allocated before plus a Goto to the fallthrough
  *    block (code following the CallExpression).
+ *
+ * Note that if the inliined function has only one return, we avoid the labeled block
+ * and fully inline the code. The original return is replaced with an assignmen to the
+ * IIFE's call expression lvalue.
  */
 export function inlineImmediatelyInvokedFunctionExpressions(
   fn: HIRFunction,
@@ -146,37 +152,75 @@ export function inlineImmediatelyInvokedFunctionExpressions(
              */
             block.instructions.length = ii;
 
-            /*
-             * To account for complex control flow within the lambda, we treat the lambda
-             * as if it were a single labeled statement, and replace all returns with gotos
-             * to the label fallthrough.
-             */
-            const newTerminal: LabelTerminal = {
-              block: body.loweredFunc.func.body.entry,
-              id: makeInstructionId(0),
-              kind: 'label',
-              fallthrough: continuationBlockId,
-              loc: block.terminal.loc,
-            };
-            block.terminal = newTerminal;
+            if (hasSingleExitReturnTerminal(body.loweredFunc.func)) {
+              block.terminal = {
+                kind: 'goto',
+                block: body.loweredFunc.func.body.entry,
+                id: block.terminal.id,
+                loc: block.terminal.loc,
+                variant: GotoVariant.Break,
+              } as GotoTerminal;
+              for (const block of body.loweredFunc.func.body.blocks.values()) {
+                if (block.terminal.kind === 'return') {
+                  block.instructions.push({
+                    id: makeInstructionId(0),
+                    loc: block.terminal.loc,
+                    lvalue: instr.lvalue,
+                    value: {
+                      kind: 'LoadLocal',
+                      loc: block.terminal.loc,
+                      place: block.terminal.value,
+                    },
+                    effects: null,
+                  });
+                  block.terminal = {
+                    kind: 'goto',
+                    block: continuationBlockId,
+                    id: block.terminal.id,
+                    loc: block.terminal.loc,
+                    variant: GotoVariant.Break,
+                  } as GotoTerminal;
+                }
+              }
+              for (const [id, block] of body.loweredFunc.func.body.blocks) {
+                block.preds.clear();
+                fn.body.blocks.set(id, block);
+              }
+            } else {
+              /*
+               * To account for multiple returns within the lambda, we treat the lambda
+               * as if it were a single labeled statement, and replace all returns with gotos
+               * to the label fallthrough.
+               */
+              const newTerminal: LabelTerminal = {
+                block: body.loweredFunc.func.body.entry,
+                id: makeInstructionId(0),
+                kind: 'label',
+                fallthrough: continuationBlockId,
+                loc: block.terminal.loc,
+              };
+              block.terminal = newTerminal;
 
-            // We store the result in the IIFE temporary
-            const result = instr.lvalue;
+              // We store the result in the IIFE temporary
+              const result = instr.lvalue;
 
-            // Declare the IIFE temporary
-            declareTemporary(fn.env, block, result);
+              // Declare the IIFE temporary
+              declareTemporary(fn.env, block, result);
 
-            // Promote the temporary with a name as we require this to persist
-            promoteTemporary(result.identifier);
+              // Promote the temporary with a name as we require this to persist
+              if (result.identifier.name == null) {
+                promoteTemporary(result.identifier);
+              }
 
-            /*
-             * Rewrite blocks from the lambda to replace any `return` with a
-             * store to the result and `goto` the continuation block
-             */
-            for (const [id, block] of body.loweredFunc.func.body.blocks) {
-              block.preds.clear();
-              rewriteBlock(fn.env, block, continuationBlockId, result);
-              fn.body.blocks.set(id, block);
+              /*
+               * Rewrite blocks from the lambda to replace any `return` with a
+               * store to the result and `goto` the continuation block
+               */
+              for (const [id, block] of body.loweredFunc.func.body.blocks) {
+                block.preds.clear();
+                rewriteBlock(fn.env, block, continuationBlockId, result);
+                fn.body.blocks.set(id, block);
+              }
             }
 
             /*
@@ -199,7 +243,7 @@ export function inlineImmediatelyInvokedFunctionExpressions(
 
   if (inlinedFunctions.size !== 0) {
     // Remove instructions that define lambdas which we inlined
-    for (const [, block] of fn.body.blocks) {
+    for (const block of fn.body.blocks.values()) {
       retainWhere(
         block.instructions,
         instr => !inlinedFunctions.has(instr.lvalue.identifier.id),
@@ -213,9 +257,25 @@ export function inlineImmediatelyInvokedFunctionExpressions(
     reversePostorderBlocks(fn.body);
     markInstructionIds(fn.body);
     markPredecessors(fn.body);
+    mergeConsecutiveBlocks(fn);
   }
 }
 
+/**
+ * Returns true if the function has a single exit terminal (throw/return) which is a return
+ */
+function hasSingleExitReturnTerminal(fn: HIRFunction): boolean {
+  let hasReturn = false;
+  let exitCount = 0;
+  for (const [, block] of fn.body.blocks) {
+    if (block.terminal.kind === 'return' || block.terminal.kind === 'throw') {
+      hasReturn ||= block.terminal.kind === 'return';
+      exitCount++;
+    }
+  }
+  return exitCount === 1 && hasReturn;
+}
+
 /*
  * Rewrites the block so that all `return` terminals are replaced:
  * * Add a StoreLocal <returnValue> = <terminal.value>

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PruneNonEscapingScopes.ts

@@ -829,12 +829,14 @@ class CollectDependenciesVisitor extends ReactiveFunctionVisitor<
         };
       }
       case 'UnsupportedNode': {
-        CompilerError.invariant(false, {
-          reason: `Unexpected unsupported node`,
-          description: null,
-          loc: value.loc,
-          suggestions: null,
-        });
+        const lvalues = [];
+        if (lvalue !== null) {
+          lvalues.push({place: lvalue, level: MemoizationLevel.Never});
+        }
+        return {
+          lvalues,
+          rvalues: [],
+        };
       }
       default: {
         assertExhaustive(
@@ -1064,12 +1066,29 @@ class PruneScopesTransform extends ReactiveFunctionTransform<
 
     const value = instruction.value;
     if (value.kind === 'StoreLocal' && value.lvalue.kind === 'Reassign') {
+      // Complex cases of useMemo inlining result in a temporary that is reassigned
       const ids = getOrInsertDefault(
         this.reassignments,
         value.lvalue.place.identifier.declarationId,
         new Set(),
       );
       ids.add(value.value.identifier);
+    } else if (
+      value.kind === 'LoadLocal' &&
+      value.place.identifier.scope != null &&
+      instruction.lvalue != null &&
+      instruction.lvalue.identifier.scope == null
+    ) {
+      /*
+       * Simpler cases result in a direct assignment to the original lvalue, with a
+       * LoadLocal
+       */
+      const ids = getOrInsertDefault(
+        this.reassignments,
+        instruction.lvalue.identifier.declarationId,
+        new Set(),
+      );
+      ids.add(value.place.identifier);
     } else if (value.kind === 'FinishMemoize') {
       let decls;
       if (value.decl.identifier.scope == null) {

compiler/packages/babel-plugin-react-compiler/src/Utils/TestUtils.ts

@@ -75,21 +75,21 @@ const testComplexConfigDefaults: PartialEnvironmentConfig = {
         source: 'react',
         importSpecifierName: 'useEffect',
       },
-      numRequiredArgs: 1,
+      autodepsIndex: 1,
     },
     {
       function: {
         source: 'shared-runtime',
         importSpecifierName: 'useSpecialEffect',
       },
-      numRequiredArgs: 2,
+      autodepsIndex: 2,
     },
     {
       function: {
         source: 'useEffectWrapper',
         importSpecifierName: 'default',
       },
-      numRequiredArgs: 1,
+      autodepsIndex: 1,
     },
   ],
 };

compiler/packages/babel-plugin-react-compiler/src/Validation/ValidateNoSetStateInEffects.ts

@@ -11,20 +11,22 @@ import {
   IdentifierId,
   isSetStateType,
   isUseEffectHookType,
+  isUseInsertionEffectHookType,
+  isUseLayoutEffectHookType,
   Place,
 } from '../HIR';
 import {eachInstructionValueOperand} from '../HIR/visitors';
 import {Result} from '../Utils/Result';
 
 /**
- * Validates against calling setState in the body of a *passive* effect (useEffect),
+ * Validates against calling setState in the body of an effect (useEffect and friends),
  * while allowing calling setState in callbacks scheduled by the effect.
  *
  * Calling setState during execution of a useEffect triggers a re-render, which is
  * often bad for performance and frequently has more efficient and straightforward
  * alternatives. See https://react.dev/learn/you-might-not-need-an-effect for examples.
  */
-export function validateNoSetStateInPassiveEffects(
+export function validateNoSetStateInEffects(
   fn: HIRFunction,
 ): Result<void, CompilerError> {
   const setStateFunctions: Map<IdentifierId, Place> = new Map();
@@ -79,7 +81,11 @@ export function validateNoSetStateInPassiveEffects(
             instr.value.kind === 'MethodCall'
               ? instr.value.receiver
               : instr.value.callee;
-          if (isUseEffectHookType(callee.identifier)) {
+          if (
+            isUseEffectHookType(callee.identifier) ||
+            isUseLayoutEffectHookType(callee.identifier) ||
+            isUseInsertionEffectHookType(callee.identifier)
+          ) {
             const arg = instr.value.args[0];
             if (arg !== undefined && arg.kind === 'Identifier') {
               const setState = setStateFunctions.get(arg.identifier.id);

compiler/packages/babel-plugin-react-compiler/src/Validation/ValidatePreservedManualMemoization.ts

@@ -445,11 +445,13 @@ class Visitor extends ReactiveFunctionVisitor<VisitorState> {
      */
     this.recordTemporaries(instruction, state);
     const value = instruction.value;
+    // Track reassignments from inlining of manual memo
     if (
       value.kind === 'StoreLocal' &&
       value.lvalue.kind === 'Reassign' &&
       state.manualMemoState != null
     ) {
+      // Complex cases of inlining end up with a temporary that is reassigned
       const ids = getOrInsertDefault(
         state.manualMemoState.reassignments,
         value.lvalue.place.identifier.declarationId,
@@ -457,6 +459,21 @@ class Visitor extends ReactiveFunctionVisitor<VisitorState> {
       );
       ids.add(value.value.identifier);
     }
+    if (
+      value.kind === 'LoadLocal' &&
+      value.place.identifier.scope != null &&
+      instruction.lvalue != null &&
+      instruction.lvalue.identifier.scope == null &&
+      state.manualMemoState != null
+    ) {
+      // Simpler cases of inlining assign to the original IIFE lvalue
+      const ids = getOrInsertDefault(
+        state.manualMemoState.reassignments,
+        instruction.lvalue.identifier.declarationId,
+        new Set(),
+      );
+      ids.add(value.place.identifier);
+    }
     if (value.kind === 'StartMemoize') {
       let depsFromSource: Array<ManualMemoDependency> | null = null;
       if (value.deps != null) {

compiler/packages/babel-plugin-react-compiler/src/__tests__/envConfig-test.ts

@@ -33,12 +33,12 @@ describe('parseConfigPragma()', () => {
               source: 'react',
               importSpecifierName: 'useEffect',
             },
-            numRequiredArgs: 0,
+            autodepsIndex: 0,
           },
         ],
       } as any);
     }).toThrowErrorMatchingInlineSnapshot(
-      `"InvalidConfig: Could not validate environment config. Update React Compiler config to fix the error. Validation error: numRequiredArgs must be > 0 at "inferEffectDependencies[0].numRequiredArgs""`,
+      `"InvalidConfig: Could not validate environment config. Update React Compiler config to fix the error. Validation error: autodepsIndex must be > 0 at "inferEffectDependencies[0].autodepsIndex""`,
     );
   });
 

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/align-scopes-iife-return-modified-later-logical.expect.md

@@ -26,20 +26,16 @@ import { c as _c } from "react/compiler-runtime";
 import { getNull } from "shared-runtime";
 
 function Component(props) {
-  const $ = _c(3);
-  let t0;
+  const $ = _c(2);
   let items;
   if ($[0] !== props.a) {
-    t0 = getNull() ?? [];
-    items = t0;
+    items = getNull() ?? [];
 
     items.push(props.a);
     $[0] = props.a;
     $[1] = items;
-    $[2] = t0;
   } else {
     items = $[1];
-    t0 = $[2];
   }
   return items;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/allow-modify-global-in-callback-jsx.expect.md

@@ -52,15 +52,13 @@ function Component(t0) {
   }
   const onClick = t1;
   let t2;
-  let t3;
   if ($[2] !== onClick) {
-    t3 = <div onClick={onClick}>{someGlobal.value}</div>;
+    t2 = <div onClick={onClick}>{someGlobal.value}</div>;
     $[2] = onClick;
-    $[3] = t3;
+    $[3] = t2;
   } else {
-    t3 = $[3];
+    t2 = $[3];
   }
-  t2 = t3;
   return t2;
 }
 

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/babel-existing-react-import.expect.md

@@ -30,50 +30,46 @@ function Component(props) {
   const $ = _c(4);
   const [x] = useState(0);
   let t0;
-  let t1;
   if ($[0] !== x) {
-    t1 = calculateExpensiveNumber(x);
+    t0 = calculateExpensiveNumber(x);
     $[0] = x;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const expensiveNumber = t0;
-  let t2;
+  let t1;
   if ($[2] !== expensiveNumber) {
-    t2 = <div>{expensiveNumber}</div>;
+    t1 = <div>{expensiveNumber}</div>;
     $[2] = expensiveNumber;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  return t2;
+  return t1;
 }
 
 function Component2(props) {
   const $ = _c(4);
   const [x] = useState(0);
   let t0;
-  let t1;
   if ($[0] !== x) {
-    t1 = calculateExpensiveNumber(x);
+    t0 = calculateExpensiveNumber(x);
     $[0] = x;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const expensiveNumber = t0;
-  let t2;
+  let t1;
   if ($[2] !== expensiveNumber) {
-    t2 = <div>{expensiveNumber}</div>;
+    t1 = <div>{expensiveNumber}</div>;
     $[2] = expensiveNumber;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  return t2;
+  return t1;
 }
 
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/babel-existing-react-kitchensink-import.expect.md

@@ -32,50 +32,46 @@ function Component(props) {
   const $ = _c(4);
   const [x] = useState(0);
   let t0;
-  let t1;
   if ($[0] !== x) {
-    t1 = calculateExpensiveNumber(x);
+    t0 = calculateExpensiveNumber(x);
     $[0] = x;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const expensiveNumber = t0;
-  let t2;
+  let t1;
   if ($[2] !== expensiveNumber) {
-    t2 = <div>{expensiveNumber}</div>;
+    t1 = <div>{expensiveNumber}</div>;
     $[2] = expensiveNumber;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  return t2;
+  return t1;
 }
 
 function Component2(props) {
   const $ = _c(4);
   const [x] = useState(0);
   let t0;
-  let t1;
   if ($[0] !== x) {
-    t1 = calculateExpensiveNumber(x);
+    t0 = calculateExpensiveNumber(x);
     $[0] = x;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const expensiveNumber = t0;
-  let t2;
+  let t1;
   if ($[2] !== expensiveNumber) {
-    t2 = <div>{expensiveNumber}</div>;
+    t1 = <div>{expensiveNumber}</div>;
     $[2] = expensiveNumber;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  return t2;
+  return t1;
 }
 
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/babel-existing-react-namespace-import.expect.md

@@ -30,25 +30,23 @@ function Component(props) {
   const $ = _c(4);
   const [x] = React.useState(0);
   let t0;
-  let t1;
   if ($[0] !== x) {
-    t1 = calculateExpensiveNumber(x);
+    t0 = calculateExpensiveNumber(x);
     $[0] = x;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const expensiveNumber = t0;
-  let t2;
+  let t1;
   if ($[2] !== expensiveNumber) {
-    t2 = <div>{expensiveNumber}</div>;
+    t1 = <div>{expensiveNumber}</div>;
     $[2] = expensiveNumber;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  return t2;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/babel-existing-react-runtime-import.expect.md

@@ -36,30 +36,28 @@ function Component(props) {
   const $ = _c(4);
   const [x] = React.useState(0);
   let t0;
-  let t1;
   if ($[0] !== x) {
-    t1 = calculateExpensiveNumber(x);
+    t0 = calculateExpensiveNumber(x);
     $[0] = x;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const expensiveNumber = t0;
-  let t2;
+  let t1;
   if ($[2] !== expensiveNumber) {
-    t2 = (
+    t1 = (
       <div>
         {expensiveNumber}
         {`${someImport}`}
       </div>
     );
     $[2] = expensiveNumber;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  return t2;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/block-scoping-switch-variable-scoping.expect.md

@@ -36,15 +36,14 @@ import { useMemo } from "react";
 function Component(props) {
   const $ = _c(2);
   let t0;
-  let t1;
   if ($[0] !== props.value) {
-    t1 = { value: props.value };
+    t0 = { value: props.value };
     $[0] = props.value;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  const handlers = t1;
+  const handlers = t0;
   bb0: switch (props.test) {
     case true: {
       console.log(handlers.value);
@@ -52,9 +51,7 @@ function Component(props) {
     }
     default:
   }
-
-  t0 = handlers;
-  const outerHandlers = t0;
+  const outerHandlers = handlers;
   return outerHandlers;
 }
 

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/codegen-inline-iife-reassign.expect.md

@@ -37,11 +37,9 @@ function useTest() {
 
     const t1 = (w = 42);
     const t2 = w;
-    let t3;
 
     w = 999;
-    t3 = 2;
-    t0 = makeArray(t1, t2, t3);
+    t0 = makeArray(t1, t2, 2);
     $[0] = t0;
   } else {
     t0 = $[0];

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/codegen-inline-iife-storeprop.expect.md

@@ -37,11 +37,9 @@ function useTest() {
 
     const t1 = (w.x = 42);
     const t2 = w.x;
-    let t3;
 
     w.x = 999;
-    t3 = 2;
-    t0 = makeArray(t1, t2, t3);
+    t0 = makeArray(t1, t2, 2);
     $[0] = t0;
   } else {
     t0 = $[0];

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/codegen-inline-iife.expect.md

@@ -32,11 +32,9 @@ function useTest() {
   let t0;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
     const t1 = print(1);
-    let t2;
 
     print(2);
-    t2 = 2;
-    t0 = makeArray(t1, t2);
+    t0 = makeArray(t1, 2);
     $[0] = t0;
   } else {
     t0 = $[0];

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/consecutive-use-memo.expect.md

@@ -29,37 +29,33 @@ function useHook(t0) {
   const $ = _c(7);
   const { a, b } = t0;
   let t1;
-  let t2;
   if ($[0] !== a) {
-    t2 = identity({ a });
+    t1 = identity({ a });
     $[0] = a;
-    $[1] = t2;
+    $[1] = t1;
   } else {
-    t2 = $[1];
+    t1 = $[1];
   }
-  t1 = t2;
   const valA = t1;
-  let t3;
-  let t4;
+  let t2;
   if ($[2] !== b) {
-    t4 = identity([b]);
+    t2 = identity([b]);
     $[2] = b;
-    $[3] = t4;
+    $[3] = t2;
   } else {
-    t4 = $[3];
+    t2 = $[3];
   }
-  t3 = t4;
-  const valB = t3;
-  let t5;
+  const valB = t2;
+  let t3;
   if ($[4] !== valA || $[5] !== valB) {
-    t5 = [valA, valB];
+    t3 = [valA, valB];
     $[4] = valA;
     $[5] = valB;
-    $[6] = t5;
+    $[6] = t3;
   } else {
-    t5 = $[6];
+    t3 = $[6];
   }
-  return t5;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/context-variable-as-jsx-element-tag.expect.md

@@ -34,10 +34,8 @@ function Component(props) {
   let Component;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
     Component = Stringify;
-    let t0;
 
-    t0 = Component;
-    Component = t0;
+    Component = Component;
     $[0] = Component;
   } else {
     Component = $[0];

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/deeply-nested-function-expressions-with-params.expect.md

@@ -28,20 +28,18 @@ import { c as _c } from "react/compiler-runtime";
 function Foo() {
   const $ = _c(1);
   let t0;
-  let t1;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = function a(t2) {
-      const x_0 = t2 === undefined ? _temp : t2;
-      return (function b(t3) {
-        const y_0 = t3 === undefined ? [] : t3;
+    t0 = function a(t1) {
+      const x_0 = t1 === undefined ? _temp : t1;
+      return (function b(t2) {
+        const y_0 = t2 === undefined ? [] : t2;
         return [x_0, y_0];
       })();
     };
-    $[0] = t1;
+    $[0] = t0;
   } else {
-    t1 = $[0];
+    t0 = $[0];
   }
-  t0 = t1;
   return t0;
 }
 function _temp() {}

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/drop-methodcall-usememo.expect.md

@@ -28,7 +28,6 @@ import * as React from "react";
 
 function Component(props) {
   const $ = _c(2);
-  let t0;
   let x;
   if ($[0] !== props.value) {
     x = [];
@@ -38,8 +37,7 @@ function Component(props) {
   } else {
     x = $[1];
   }
-  t0 = x;
-  const x_0 = t0;
+  const x_0 = x;
   return x_0;
 }
 

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.invalid-eval-unsupported.expect.md

@@ -0,0 +1,24 @@
+
+## Input
+
+```javascript
+function Component(props) {
+  eval('props.x = true');
+  return <div />;
+}
+
+```
+
+
+## Error
+
+```
+  1 | function Component(props) {
+> 2 |   eval('props.x = true');
+    |   ^^^^ UnsupportedJS: The 'eval' function is not supported. Eval is an anti-pattern in JavaScript, and the code executed cannot be evaluated by React Compiler (2:2)
+  3 |   return <div />;
+  4 | }
+  5 |
+```
+          
+      

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.invalid-eval-unsupported.js

@@ -0,0 +1,4 @@
+function Component(props) {
+  eval('props.x = true');
+  return <div />;
+}

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.todo-kitchensink.expect.md

@@ -84,7 +84,7 @@ let moduleLocal = false;
 > 3 |   var x = [];
     |   ^^^^^^^^^^^ Todo: (BuildHIR::lowerStatement) Handle var kinds in VariableDeclaration (3:3)
 
-Todo: (BuildHIR::lowerStatement) Handle ClassDeclaration statements (5:10)
+UnsupportedJS: Inline `class` declarations are not supported. Move class declarations outside of components/hooks (5:10)
 
 Todo: (BuildHIR::lowerStatement) Handle non-variable initialization in ForStatement (20:22)
 

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/existing-variables-with-c-name.expect.md

@@ -42,34 +42,32 @@ function Component(props) {
   const c1 = __c;
   const $c = c1;
   let t0;
-  let t1;
   if ($[0] !== $c) {
-    t1 = [$c];
+    t0 = [$c];
     $[0] = $c;
-    $[1] = t1;
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const array = t0;
-  let t2;
+  let t1;
   if ($[2] !== state) {
-    t2 = [state];
+    t1 = [state];
     $[2] = state;
-    $[3] = t2;
+    $[3] = t1;
   } else {
-    t2 = $[3];
+    t1 = $[3];
   }
-  let t3;
-  if ($[4] !== array || $[5] !== t2) {
-    t3 = <ValidateMemoization inputs={t2} output={array} />;
+  let t2;
+  if ($[4] !== array || $[5] !== t1) {
+    t2 = <ValidateMemoization inputs={t1} output={array} />;
     $[4] = array;
-    $[5] = t2;
-    $[6] = t3;
+    $[5] = t1;
+    $[6] = t2;
   } else {
-    t3 = $[6];
+    t2 = $[6];
   }
-  return t3;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/fast-refresh-dont-refresh-const-changes-prod.expect.md

@@ -63,23 +63,21 @@ function Component() {
 
   unsafeUpdateConst();
   let t0;
-  let t1;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = [{ pretendConst }];
-    $[0] = t1;
+    t0 = [{ pretendConst }];
+    $[0] = t0;
   } else {
-    t1 = $[0];
+    t0 = $[0];
   }
-  t0 = t1;
   const value = t0;
-  let t2;
+  let t1;
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t2 = <ValidateMemoization inputs={[]} output={value} />;
-    $[1] = t2;
+    t1 = <ValidateMemoization inputs={[]} output={value} />;
+    $[1] = t1;
   } else {
-    t2 = $[1];
+    t1 = $[1];
   }
-  return t2;
+  return t1;
 }
 function _temp() {
   unsafeResetConst();

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/fast-refresh-refresh-on-const-changes-dev.expect.md

@@ -74,23 +74,21 @@ function Component() {
 
   unsafeUpdateConst();
   let t0;
-  let t1;
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = [{ pretendConst }];
-    $[1] = t1;
+    t0 = [{ pretendConst }];
+    $[1] = t0;
   } else {
-    t1 = $[1];
+    t0 = $[1];
   }
-  t0 = t1;
   const value = t0;
-  let t2;
+  let t1;
   if ($[2] === Symbol.for("react.memo_cache_sentinel")) {
-    t2 = <ValidateMemoization inputs={[pretendConst]} output={value} />;
-    $[2] = t2;
+    t1 = <ValidateMemoization inputs={[pretendConst]} output={value} />;
+    $[2] = t1;
   } else {
-    t2 = $[2];
+    t1 = $[2];
   }
-  return t2;
+  return t1;
 }
 function _temp() {
   unsafeResetConst();

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/fast-refresh-reloading.expect.md

@@ -38,36 +38,34 @@ function Component(props) {
     $[0] = "20945b0193e529df490847c66111b38d7b02485d5b53d0829ff3b23af87b105c";
   }
   const [state] = useState(0);
-  let t0;
-  const t1 = state * 2;
+  const t0 = state * 2;
+  let t1;
+  if ($[1] !== t0) {
+    t1 = [t0];
+    $[1] = t0;
+    $[2] = t1;
+  } else {
+    t1 = $[2];
+  }
+  const doubled = t1;
   let t2;
-  if ($[1] !== t1) {
-    t2 = [t1];
-    $[1] = t1;
-    $[2] = t2;
-  } else {
-    t2 = $[2];
-  }
-  t0 = t2;
-  const doubled = t0;
-  let t3;
   if ($[3] !== state) {
-    t3 = [state];
+    t2 = [state];
     $[3] = state;
-    $[4] = t3;
+    $[4] = t2;
   } else {
-    t3 = $[4];
+    t2 = $[4];
   }
-  let t4;
-  if ($[5] !== doubled || $[6] !== t3) {
-    t4 = <ValidateMemoization inputs={t3} output={doubled} />;
+  let t3;
+  if ($[5] !== doubled || $[6] !== t2) {
+    t3 = <ValidateMemoization inputs={t2} output={doubled} />;
     $[5] = doubled;
-    $[6] = t3;
-    $[7] = t4;
+    $[6] = t2;
+    $[7] = t3;
   } else {
-    t4 = $[7];
+    t3 = $[7];
   }
-  return t4;
+  return t3;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/fbt/fbt-repro-invalid-mutable-range-destructured-prop.expect.md

@@ -40,36 +40,34 @@ function Component(t0) {
   const $ = _c(7);
   const { data } = t0;
   let t1;
-  let t2;
   if ($[0] !== data.name) {
-    t2 = fbt._("{name}", [fbt._param("name", data.name ?? "")], {
+    t1 = fbt._("{name}", [fbt._param("name", data.name ?? "")], {
       hk: "csQUH",
     });
     $[0] = data.name;
-    $[1] = t2;
+    $[1] = t1;
   } else {
-    t2 = $[1];
+    t1 = $[1];
   }
-  t1 = t2;
   const el = t1;
-  let t3;
+  let t2;
   if ($[2] !== data.name) {
-    t3 = [data.name];
+    t2 = [data.name];
     $[2] = data.name;
-    $[3] = t3;
+    $[3] = t2;
   } else {
-    t3 = $[3];
+    t2 = $[3];
   }
-  let t4;
-  if ($[4] !== el || $[5] !== t3) {
-    t4 = <ValidateMemoization inputs={t3} output={el} />;
+  let t3;
+  if ($[4] !== el || $[5] !== t2) {
+    t3 = <ValidateMemoization inputs={t2} output={el} />;
     $[4] = el;
-    $[5] = t3;
-    $[6] = t4;
+    $[5] = t2;
+    $[6] = t3;
   } else {
-    t4 = $[6];
+    t3 = $[6];
   }
-  return t4;
+  return t3;
 }
 
 const props1 = { data: { name: "Mike" } };

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/flow-enum-inline.expect.md

@@ -0,0 +1,60 @@
+
+## Input
+
+```javascript
+// @flow
+function Component(props) {
+  enum Bool {
+    True = 'true',
+    False = 'false',
+  }
+
+  let bool: Bool = Bool.False;
+  if (props.value) {
+    bool = Bool.True;
+  }
+  return <div>{bool}</div>;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Component,
+  params: [{value: true}],
+};
+
+```
+
+## Code
+
+```javascript
+import { c as _c } from "react/compiler-runtime";
+function Component(props) {
+  const $ = _c(2);
+  enum Bool {
+    True = "true",
+    False = "false",
+  }
+
+  let bool = Bool.False;
+  if (props.value) {
+    bool = Bool.True;
+  }
+  let t0;
+  if ($[0] !== bool) {
+    t0 = <div>{bool}</div>;
+    $[0] = bool;
+    $[1] = t0;
+  } else {
+    t0 = $[1];
+  }
+  return t0;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Component,
+  params: [{ value: true }],
+};
+
+```
+      
+### Eval output
+(kind: exception) Bool is not defined

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/flow-enum-inline.js

@@ -0,0 +1,18 @@
+// @flow
+function Component(props) {
+  enum Bool {
+    True = 'true',
+    False = 'false',
+  }
+
+  let bool: Bool = Bool.False;
+  if (props.value) {
+    bool = Bool.True;
+  }
+  return <div>{bool}</div>;
+}
+
+export const FIXTURE_ENTRYPOINT = {
+  fn: Component,
+  params: [{value: true}],
+};

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/for-of-nonmutating-loop-local-collection.expect.md

@@ -47,17 +47,14 @@ function Component(t0) {
   const $ = _c(19);
   const { a, b } = t0;
   let t1;
-  let t2;
   if ($[0] !== a) {
-    t2 = [a];
+    t1 = [a];
     $[0] = a;
-    $[1] = t2;
+    $[1] = t1;
   } else {
-    t2 = $[1];
+    t1 = $[1];
   }
-  t1 = t2;
   const x = t1;
-  let t3;
   let items;
   if ($[2] !== b || $[3] !== x) {
     items = [b];
@@ -70,59 +67,57 @@ function Component(t0) {
   } else {
     items = $[4];
   }
-
-  t3 = items;
-  const y = t3;
-  let t4;
+  const y = items;
+  let t2;
   if ($[5] !== a) {
-    t4 = [a];
+    t2 = [a];
     $[5] = a;
-    $[6] = t4;
+    $[6] = t2;
   } else {
-    t4 = $[6];
+    t2 = $[6];
   }
-  let t5;
-  if ($[7] !== t4 || $[8] !== x) {
-    t5 = <ValidateMemoization inputs={t4} output={x} />;
-    $[7] = t4;
+  let t3;
+  if ($[7] !== t2 || $[8] !== x) {
+    t3 = <ValidateMemoization inputs={t2} output={x} />;
+    $[7] = t2;
     $[8] = x;
-    $[9] = t5;
+    $[9] = t3;
   } else {
-    t5 = $[9];
+    t3 = $[9];
   }
-  let t6;
+  let t4;
   if ($[10] !== b || $[11] !== x) {
-    t6 = [x, b];
+    t4 = [x, b];
     $[10] = b;
     $[11] = x;
-    $[12] = t6;
+    $[12] = t4;
   } else {
-    t6 = $[12];
+    t4 = $[12];
   }
-  let t7;
-  if ($[13] !== t6 || $[14] !== y) {
-    t7 = <ValidateMemoization inputs={t6} output={y} />;
-    $[13] = t6;
+  let t5;
+  if ($[13] !== t4 || $[14] !== y) {
+    t5 = <ValidateMemoization inputs={t4} output={y} />;
+    $[13] = t4;
     $[14] = y;
-    $[15] = t7;
+    $[15] = t5;
   } else {
-    t7 = $[15];
+    t5 = $[15];
   }
-  let t8;
-  if ($[16] !== t5 || $[17] !== t7) {
-    t8 = (
+  let t6;
+  if ($[16] !== t3 || $[17] !== t5) {
+    t6 = (
       <>
+        {t3}
         {t5}
-        {t7}
       </>
     );
-    $[16] = t5;
-    $[17] = t7;
-    $[18] = t8;
+    $[16] = t3;
+    $[17] = t5;
+    $[18] = t6;
   } else {
-    t8 = $[18];
+    t6 = $[18];
   }
-  return t8;
+  return t6;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/function-expression-prototype-call-mutating.expect.md

@@ -34,7 +34,6 @@ import { ValidateMemoization } from "shared-runtime";
 
 function Component(props) {
   const $ = _c(7);
-  let t0;
   let a;
   if ($[0] !== props.name) {
     a = [];
@@ -48,26 +47,25 @@ function Component(props) {
   } else {
     a = $[1];
   }
-  t0 = a;
-  const a_0 = t0;
-  let t1;
+  const a_0 = a;
+  let t0;
   if ($[2] !== props.name) {
-    t1 = [props.name];
+    t0 = [props.name];
     $[2] = props.name;
-    $[3] = t1;
+    $[3] = t0;
   } else {
-    t1 = $[3];
+    t0 = $[3];
   }
-  let t2;
-  if ($[4] !== a_0 || $[5] !== t1) {
-    t2 = <ValidateMemoization inputs={t1} output={a_0} />;
+  let t1;
+  if ($[4] !== a_0 || $[5] !== t0) {
+    t1 = <ValidateMemoization inputs={t0} output={a_0} />;
     $[4] = a_0;
-    $[5] = t1;
-    $[6] = t2;
+    $[5] = t0;
+    $[6] = t1;
   } else {
-    t2 = $[6];
+    t1 = $[6];
   }
-  return t2;
+  return t1;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/gating/error.dynamic-gating-invalid-identifier-nopanic-required-feature.expect.md

@@ -3,13 +3,13 @@
 
 ```javascript
 // @dynamicGating:{"source":"shared-runtime"} @panicThreshold:"none" @inferEffectDependencies
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function ReactiveVariable({propVal}) {
   'use memo if(invalid identifier)';
   const arr = [propVal];
-  useEffect(() => print(arr));
+  useEffect(() => print(arr), AUTODEPS);
 }
 
 export const FIXTURE_ENTRYPOINT = {
@@ -25,8 +25,8 @@ export const FIXTURE_ENTRYPOINT = {
 ```
    6 |   'use memo if(invalid identifier)';
    7 |   const arr = [propVal];
->  8 |   useEffect(() => print(arr));
-     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (8:8)
+>  8 |   useEffect(() => print(arr), AUTODEPS);
+     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (8:8)
    9 | }
   10 |
   11 | export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/gating/error.dynamic-gating-invalid-identifier-nopanic-required-feature.js

@@ -1,11 +1,11 @@
 // @dynamicGating:{"source":"shared-runtime"} @panicThreshold:"none" @inferEffectDependencies
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function ReactiveVariable({propVal}) {
   'use memo if(invalid identifier)';
   const arr = [propVal];
-  useEffect(() => print(arr));
+  useEffect(() => print(arr), AUTODEPS);
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/hooks-with-prefix.expect.md

@@ -46,7 +46,7 @@ const React$useMemo = React.useMemo;
 const Internal$Reassigned$useHook = useHook;
 
 function Component() {
-  const $ = _c(8);
+  const $ = _c(7);
   const [state] = React$useState(0);
   const object = Internal$Reassigned$useHook();
   let t0;
@@ -59,34 +59,30 @@ function Component() {
   }
   const json = t0;
   let t1;
-  let t2;
   if ($[2] !== state) {
-    t1 = makeArray(state);
-    const doubledArray = t1;
+    const doubledArray = makeArray(state);
 
-    t2 = doubledArray.join("");
+    t1 = doubledArray.join("");
     $[2] = state;
-    $[3] = t2;
-    $[4] = t1;
+    $[3] = t1;
   } else {
-    t2 = $[3];
-    t1 = $[4];
+    t1 = $[3];
   }
-  let t3;
-  if ($[5] !== json || $[6] !== t2) {
-    t3 = (
+  let t2;
+  if ($[4] !== json || $[5] !== t1) {
+    t2 = (
       <div>
-        {t2}
+        {t1}
         {json}
       </div>
     );
-    $[5] = json;
+    $[4] = json;
+    $[5] = t1;
     $[6] = t2;
-    $[7] = t3;
   } else {
-    t3 = $[7];
+    t2 = $[6];
   }
-  return t3;
+  return t2;
 }
 
 export const FIXTURE_ENTRYPOINT = {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/iife-return-modified-later.expect.md

@@ -22,20 +22,16 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 import { c as _c } from "react/compiler-runtime";
 function Component(props) {
-  const $ = _c(3);
-  let t0;
+  const $ = _c(2);
   let items;
   if ($[0] !== props.a) {
-    t0 = [];
-    items = t0;
+    items = [];
 
     items.push(props.a);
     $[0] = props.a;
     $[1] = items;
-    $[2] = t0;
   } else {
     items = $[1];
-    t0 = $[2];
   }
   return items;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.callsite-in-non-react-fn-default-import.expect.md

@@ -4,9 +4,10 @@
 ```javascript
 // @inferEffectDependencies @compilationMode:"infer" @panicThreshold:"none"
 import useMyEffect from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 function nonReactFn(arg) {
-  useMyEffect(() => [1, 2, arg]);
+  useMyEffect(() => [1, 2, arg], AUTODEPS);
 }
 
 ```
@@ -15,12 +16,12 @@ function nonReactFn(arg) {
 ## Error
 
 ```
-  3 |
-  4 | function nonReactFn(arg) {
-> 5 |   useMyEffect(() => [1, 2, arg]);
-    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (5:5)
-  6 | }
-  7 |
+  4 |
+  5 | function nonReactFn(arg) {
+> 6 |   useMyEffect(() => [1, 2, arg], AUTODEPS);
+    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (6:6)
+  7 | }
+  8 |
 ```
           
       

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.callsite-in-non-react-fn-default-import.js

@@ -1,6 +1,7 @@
 // @inferEffectDependencies @compilationMode:"infer" @panicThreshold:"none"
 import useMyEffect from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 function nonReactFn(arg) {
-  useMyEffect(() => [1, 2, arg]);
+  useMyEffect(() => [1, 2, arg], AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.callsite-in-non-react-fn.expect.md

@@ -3,10 +3,10 @@
 
 ```javascript
 // @inferEffectDependencies @compilationMode:"infer" @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 function nonReactFn(arg) {
-  useEffect(() => [1, 2, arg]);
+  useEffect(() => [1, 2, arg], AUTODEPS);
 }
 
 ```
@@ -17,8 +17,8 @@ function nonReactFn(arg) {
 ```
   3 |
   4 | function nonReactFn(arg) {
-> 5 |   useEffect(() => [1, 2, arg]);
-    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (5:5)
+> 5 |   useEffect(() => [1, 2, arg], AUTODEPS);
+    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (5:5)
   6 | }
   7 |
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.callsite-in-non-react-fn.js

@@ -1,6 +1,6 @@
 // @inferEffectDependencies @compilationMode:"infer" @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 function nonReactFn(arg) {
-  useEffect(() => [1, 2, arg]);
+  useEffect(() => [1, 2, arg], AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.non-inlined-effect-fn.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 /**
  * Error on non-inlined effect functions:
@@ -21,7 +21,7 @@ function Component({foo}) {
   }
 
   // No inferred dep array, the argument is not a lambda
-  useEffect(f);
+  useEffect(f, AUTODEPS);
 }
 
 ```
@@ -32,8 +32,8 @@ function Component({foo}) {
 ```
   18 |
   19 |   // No inferred dep array, the argument is not a lambda
-> 20 |   useEffect(f);
-     |   ^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (20:20)
+> 20 |   useEffect(f, AUTODEPS);
+     |   ^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (20:20)
   21 | }
   22 |
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.non-inlined-effect-fn.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 /**
  * Error on non-inlined effect functions:
@@ -17,5 +17,5 @@ function Component({foo}) {
   }
 
   // No inferred dep array, the argument is not a lambda
-  useEffect(f);
+  useEffect(f, AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-dynamic-gating.expect.md

@@ -5,6 +5,7 @@
 // @dynamicGating:{"source":"shared-runtime"} @inferEffectDependencies @panicThreshold:"none"
 
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 /**
  * TODO: run the non-forget enabled version through the effect inference
@@ -13,7 +14,7 @@ import useEffectWrapper from 'useEffectWrapper';
 function Component({foo}) {
   'use memo if(getTrue)';
   const arr = [];
-  useEffectWrapper(() => arr.push(foo));
+  useEffectWrapper(() => arr.push(foo), AUTODEPS);
   arr.push(2);
   return arr;
 }
@@ -30,13 +31,13 @@ export const FIXTURE_ENTRYPOINT = {
 ## Error
 
 ```
-  10 |   'use memo if(getTrue)';
-  11 |   const arr = [];
-> 12 |   useEffectWrapper(() => arr.push(foo));
-     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (12:12)
-  13 |   arr.push(2);
-  14 |   return arr;
-  15 | }
+  11 |   'use memo if(getTrue)';
+  12 |   const arr = [];
+> 13 |   useEffectWrapper(() => arr.push(foo), AUTODEPS);
+     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (13:13)
+  14 |   arr.push(2);
+  15 |   return arr;
+  16 | }
 ```
           
       

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-dynamic-gating.js

@@ -1,6 +1,7 @@
 // @dynamicGating:{"source":"shared-runtime"} @inferEffectDependencies @panicThreshold:"none"
 
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 /**
  * TODO: run the non-forget enabled version through the effect inference
@@ -9,7 +10,7 @@ import useEffectWrapper from 'useEffectWrapper';
 function Component({foo}) {
   'use memo if(getTrue)';
   const arr = [];
-  useEffectWrapper(() => arr.push(foo));
+  useEffectWrapper(() => arr.push(foo), AUTODEPS);
   arr.push(2);
   return arr;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-gating.expect.md

@@ -4,6 +4,7 @@
 ```javascript
 // @gating @inferEffectDependencies @panicThreshold:"none"
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 /**
  * TODO: run the non-forget enabled version through the effect inference
@@ -11,7 +12,7 @@ import useEffectWrapper from 'useEffectWrapper';
  */
 function Component({foo}) {
   const arr = [];
-  useEffectWrapper(() => arr.push(foo));
+  useEffectWrapper(() => arr.push(foo), AUTODEPS);
   arr.push(2);
   return arr;
 }
@@ -28,13 +29,13 @@ export const FIXTURE_ENTRYPOINT = {
 ## Error
 
 ```
-   8 | function Component({foo}) {
-   9 |   const arr = [];
-> 10 |   useEffectWrapper(() => arr.push(foo));
-     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (10:10)
-  11 |   arr.push(2);
-  12 |   return arr;
-  13 | }
+   9 | function Component({foo}) {
+  10 |   const arr = [];
+> 11 |   useEffectWrapper(() => arr.push(foo), AUTODEPS);
+     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (11:11)
+  12 |   arr.push(2);
+  13 |   return arr;
+  14 | }
 ```
           
       

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-gating.js

@@ -1,5 +1,6 @@
 // @gating @inferEffectDependencies @panicThreshold:"none"
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 /**
  * TODO: run the non-forget enabled version through the effect inference
@@ -7,7 +8,7 @@ import useEffectWrapper from 'useEffectWrapper';
  */
 function Component({foo}) {
   const arr = [];
-  useEffectWrapper(() => arr.push(foo));
+  useEffectWrapper(() => arr.push(foo), AUTODEPS);
   arr.push(2);
   return arr;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-import-default-property-useEffect.expect.md

@@ -7,7 +7,7 @@ import React from 'react';
 
 function NonReactiveDepInEffect() {
   const obj = makeObject_Primitives();
-  React.useEffect(() => print(obj));
+  React.useEffect(() => print(obj), React.AUTODEPS);
 }
 
 ```
@@ -18,8 +18,8 @@ function NonReactiveDepInEffect() {
 ```
   4 | function NonReactiveDepInEffect() {
   5 |   const obj = makeObject_Primitives();
-> 6 |   React.useEffect(() => print(obj));
-    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (6:6)
+> 6 |   React.useEffect(() => print(obj), React.AUTODEPS);
+    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (6:6)
   7 | }
   8 |
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-import-default-property-useEffect.js

@@ -3,5 +3,5 @@ import React from 'react';
 
 function NonReactiveDepInEffect() {
   const obj = makeObject_Primitives();
-  React.useEffect(() => print(obj));
+  React.useEffect(() => print(obj), React.AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-syntax.expect.md

@@ -4,6 +4,7 @@
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none"
 import {useSpecialEffect} from 'shared-runtime';
+import {AUTODEPS} from 'react';
 
 /**
  * Note that a react compiler-based transform still has limitations on JS syntax.
@@ -11,13 +12,17 @@ import {useSpecialEffect} from 'shared-runtime';
  */
 function Component({prop1}) {
   'use memo';
-  useSpecialEffect(() => {
-    try {
-      console.log(prop1);
-    } finally {
-      console.log('exiting');
-    }
-  }, [prop1]);
+  useSpecialEffect(
+    () => {
+      try {
+        console.log(prop1);
+      } finally {
+        console.log('exiting');
+      }
+    },
+    [prop1],
+    AUTODEPS
+  );
   return <div>{prop1}</div>;
 }
 
@@ -27,25 +32,33 @@ function Component({prop1}) {
 ## Error
 
 ```
-   8 | function Component({prop1}) {
-   9 |   'use memo';
-> 10 |   useSpecialEffect(() => {
-     |   ^^^^^^^^^^^^^^^^^^^^^^^^
-> 11 |     try {
-     | ^^^^^^^^^
-> 12 |       console.log(prop1);
-     | ^^^^^^^^^
-> 13 |     } finally {
-     | ^^^^^^^^^
-> 14 |       console.log('exiting');
-     | ^^^^^^^^^
-> 15 |     }
-     | ^^^^^^^^^
-> 16 |   }, [prop1]);
-     | ^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics.. (Bailout reason: Todo: (BuildHIR::lowerStatement) Handle TryStatement without a catch clause (11:15)) (10:16)
-  17 |   return <div>{prop1}</div>;
-  18 | }
-  19 |
+   9 | function Component({prop1}) {
+  10 |   'use memo';
+> 11 |   useSpecialEffect(
+     |   ^^^^^^^^^^^^^^^^^
+> 12 |     () => {
+     | ^^^^^^^^^^^
+> 13 |       try {
+     | ^^^^^^^^^^^
+> 14 |         console.log(prop1);
+     | ^^^^^^^^^^^
+> 15 |       } finally {
+     | ^^^^^^^^^^^
+> 16 |         console.log('exiting');
+     | ^^^^^^^^^^^
+> 17 |       }
+     | ^^^^^^^^^^^
+> 18 |     },
+     | ^^^^^^^^^^^
+> 19 |     [prop1],
+     | ^^^^^^^^^^^
+> 20 |     AUTODEPS
+     | ^^^^^^^^^^^
+> 21 |   );
+     | ^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics.. (Bailout reason: Todo: (BuildHIR::lowerStatement) Handle TryStatement without a catch clause (13:17)) (11:21)
+  22 |   return <div>{prop1}</div>;
+  23 | }
+  24 |
 ```
           
       

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.todo-syntax.js

@@ -1,5 +1,6 @@
 // @inferEffectDependencies @panicThreshold:"none"
 import {useSpecialEffect} from 'shared-runtime';
+import {AUTODEPS} from 'react';
 
 /**
  * Note that a react compiler-based transform still has limitations on JS syntax.
@@ -7,12 +8,16 @@ import {useSpecialEffect} from 'shared-runtime';
  */
 function Component({prop1}) {
   'use memo';
-  useSpecialEffect(() => {
-    try {
-      console.log(prop1);
-    } finally {
-      console.log('exiting');
-    }
-  }, [prop1]);
+  useSpecialEffect(
+    () => {
+      try {
+        console.log(prop1);
+      } finally {
+        console.log('exiting');
+      }
+    },
+    [prop1],
+    AUTODEPS
+  );
   return <div>{prop1}</div>;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.use-no-memo.expect.md

@@ -3,11 +3,11 @@
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 function Component({propVal}) {
   'use no memo';
-  useEffect(() => [propVal]);
+  useEffect(() => [propVal], AUTODEPS);
 }
 
 ```
@@ -18,8 +18,8 @@ function Component({propVal}) {
 ```
   4 | function Component({propVal}) {
   5 |   'use no memo';
-> 6 |   useEffect(() => [propVal]);
-    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (6:6)
+> 6 |   useEffect(() => [propVal], AUTODEPS);
+    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (6:6)
   7 | }
   8 |
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/error.use-no-memo.js

@@ -1,7 +1,7 @@
 // @inferEffectDependencies @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 function Component({propVal}) {
   'use no memo';
-  useEffect(() => [propVal]);
+  useEffect(() => [propVal], AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect-granular-access.expect.md

@@ -3,14 +3,14 @@
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function Component({foo}) {
   const arr = [];
   // Taking either arr[0].value or arr as a dependency is reasonable
   // as long as developers know what to expect.
-  useEffect(() => print(arr[0].value));
+  useEffect(() => print(arr[0].value), AUTODEPS);
   arr.push({value: foo});
   return arr;
 }
@@ -21,7 +21,7 @@ function Component({foo}) {
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none"
-import { useEffect } from "react";
+import { useEffect, AUTODEPS } from "react";
 import { print } from "shared-runtime";
 
 function Component(t0) {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect-granular-access.js

@@ -1,12 +1,12 @@
 // @inferEffectDependencies @panicThreshold:"none"
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function Component({foo}) {
   const arr = [];
   // Taking either arr[0].value or arr as a dependency is reasonable
   // as long as developers know what to expect.
-  useEffect(() => print(arr[0].value));
+  useEffect(() => print(arr[0].value), AUTODEPS);
   arr.push({value: foo});
   return arr;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect-optional-chain.expect.md

@@ -3,14 +3,14 @@
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function Component({foo}) {
   const arr = [];
   // Taking either arr[0].value or arr as a dependency is reasonable
   // as long as developers know what to expect.
-  useEffect(() => print(arr[0]?.value));
+  useEffect(() => print(arr[0]?.value), AUTODEPS);
   arr.push({value: foo});
   return arr;
 }
@@ -26,7 +26,7 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
-import { useEffect } from "react";
+import { useEffect, AUTODEPS } from "react";
 import { print } from "shared-runtime";
 
 function Component(t0) {
@@ -48,9 +48,9 @@ export const FIXTURE_ENTRYPOINT = {
 ## Logs
 
 ```
-{"kind":"CompileError","fnLoc":{"start":{"line":5,"column":0,"index":139},"end":{"line":12,"column":1,"index":384},"filename":"mutate-after-useeffect-optional-chain.ts"},"detail":{"reason":"Updating a value used previously in an effect function or as an effect dependency is not allowed. Consider moving the mutation before calling useEffect()","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":10,"column":2,"index":345},"end":{"line":10,"column":5,"index":348},"filename":"mutate-after-useeffect-optional-chain.ts","identifierName":"arr"}}}
-{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":9,"column":2,"index":304},"end":{"line":9,"column":39,"index":341},"filename":"mutate-after-useeffect-optional-chain.ts"},"decorations":[{"start":{"line":9,"column":24,"index":326},"end":{"line":9,"column":27,"index":329},"filename":"mutate-after-useeffect-optional-chain.ts","identifierName":"arr"}]}
-{"kind":"CompileSuccess","fnLoc":{"start":{"line":5,"column":0,"index":139},"end":{"line":12,"column":1,"index":384},"filename":"mutate-after-useeffect-optional-chain.ts"},"fnName":"Component","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
+{"kind":"CompileError","fnLoc":{"start":{"line":5,"column":0,"index":149},"end":{"line":12,"column":1,"index":404},"filename":"mutate-after-useeffect-optional-chain.ts"},"detail":{"reason":"Updating a value used previously in an effect function or as an effect dependency is not allowed. Consider moving the mutation before calling useEffect()","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":10,"column":2,"index":365},"end":{"line":10,"column":5,"index":368},"filename":"mutate-after-useeffect-optional-chain.ts","identifierName":"arr"}}}
+{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":9,"column":2,"index":314},"end":{"line":9,"column":49,"index":361},"filename":"mutate-after-useeffect-optional-chain.ts"},"decorations":[{"start":{"line":9,"column":24,"index":336},"end":{"line":9,"column":27,"index":339},"filename":"mutate-after-useeffect-optional-chain.ts","identifierName":"arr"}]}
+{"kind":"CompileSuccess","fnLoc":{"start":{"line":5,"column":0,"index":149},"end":{"line":12,"column":1,"index":404},"filename":"mutate-after-useeffect-optional-chain.ts"},"fnName":"Component","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
 ```
       
 ### Eval output

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect-optional-chain.js

@@ -1,12 +1,12 @@
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function Component({foo}) {
   const arr = [];
   // Taking either arr[0].value or arr as a dependency is reasonable
   // as long as developers know what to expect.
-  useEffect(() => print(arr[0]?.value));
+  useEffect(() => print(arr[0]?.value), AUTODEPS);
   arr.push({value: foo});
   return arr;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect-ref-access.expect.md

@@ -4,12 +4,12 @@
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
 
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function Component({arrRef}) {
   // Avoid taking arr.current as a dependency
-  useEffect(() => print(arrRef.current));
+  useEffect(() => print(arrRef.current), AUTODEPS);
   arrRef.current.val = 2;
   return arrRef;
 }
@@ -26,7 +26,7 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
 
-import { useEffect, useRef } from "react";
+import { useEffect, useRef, AUTODEPS } from "react";
 import { print } from "shared-runtime";
 
 function Component(t0) {
@@ -47,9 +47,9 @@ export const FIXTURE_ENTRYPOINT = {
 ## Logs
 
 ```
-{"kind":"CompileError","fnLoc":{"start":{"line":6,"column":0,"index":148},"end":{"line":11,"column":1,"index":311},"filename":"mutate-after-useeffect-ref-access.ts"},"detail":{"reason":"Mutating component props or hook arguments is not allowed. Consider using a local variable instead","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":9,"column":2,"index":269},"end":{"line":9,"column":16,"index":283},"filename":"mutate-after-useeffect-ref-access.ts"}}}
-{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":8,"column":2,"index":227},"end":{"line":8,"column":40,"index":265},"filename":"mutate-after-useeffect-ref-access.ts"},"decorations":[{"start":{"line":8,"column":24,"index":249},"end":{"line":8,"column":30,"index":255},"filename":"mutate-after-useeffect-ref-access.ts","identifierName":"arrRef"}]}
-{"kind":"CompileSuccess","fnLoc":{"start":{"line":6,"column":0,"index":148},"end":{"line":11,"column":1,"index":311},"filename":"mutate-after-useeffect-ref-access.ts"},"fnName":"Component","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
+{"kind":"CompileError","fnLoc":{"start":{"line":6,"column":0,"index":158},"end":{"line":11,"column":1,"index":331},"filename":"mutate-after-useeffect-ref-access.ts"},"detail":{"reason":"Mutating component props or hook arguments is not allowed. Consider using a local variable instead","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":9,"column":2,"index":289},"end":{"line":9,"column":16,"index":303},"filename":"mutate-after-useeffect-ref-access.ts"}}}
+{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":8,"column":2,"index":237},"end":{"line":8,"column":50,"index":285},"filename":"mutate-after-useeffect-ref-access.ts"},"decorations":[{"start":{"line":8,"column":24,"index":259},"end":{"line":8,"column":30,"index":265},"filename":"mutate-after-useeffect-ref-access.ts","identifierName":"arrRef"}]}
+{"kind":"CompileSuccess","fnLoc":{"start":{"line":6,"column":0,"index":158},"end":{"line":11,"column":1,"index":331},"filename":"mutate-after-useeffect-ref-access.ts"},"fnName":"Component","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
 ```
       
 ### Eval output

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect-ref-access.js

@@ -1,11 +1,11 @@
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
 
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 function Component({arrRef}) {
   // Avoid taking arr.current as a dependency
-  useEffect(() => print(arrRef.current));
+  useEffect(() => print(arrRef.current), AUTODEPS);
   arrRef.current.val = 2;
   return arrRef;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect.expect.md

@@ -3,13 +3,13 @@
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 function Component({foo}) {
   const arr = [];
   useEffect(() => {
     arr.push(foo);
-  });
+  }, AUTODEPS);
   arr.push(2);
   return arr;
 }
@@ -25,7 +25,7 @@ export const FIXTURE_ENTRYPOINT = {
 
 ```javascript
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
-import { useEffect } from "react";
+import { useEffect, AUTODEPS } from "react";
 
 function Component(t0) {
   const { foo } = t0;
@@ -47,9 +47,9 @@ export const FIXTURE_ENTRYPOINT = {
 ## Logs
 
 ```
-{"kind":"CompileError","fnLoc":{"start":{"line":4,"column":0,"index":101},"end":{"line":11,"column":1,"index":222},"filename":"mutate-after-useeffect.ts"},"detail":{"reason":"Updating a value used previously in an effect function or as an effect dependency is not allowed. Consider moving the mutation before calling useEffect()","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":9,"column":2,"index":194},"end":{"line":9,"column":5,"index":197},"filename":"mutate-after-useeffect.ts","identifierName":"arr"}}}
-{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":6,"column":2,"index":149},"end":{"line":8,"column":4,"index":190},"filename":"mutate-after-useeffect.ts"},"decorations":[{"start":{"line":7,"column":4,"index":171},"end":{"line":7,"column":7,"index":174},"filename":"mutate-after-useeffect.ts","identifierName":"arr"},{"start":{"line":7,"column":4,"index":171},"end":{"line":7,"column":7,"index":174},"filename":"mutate-after-useeffect.ts","identifierName":"arr"},{"start":{"line":7,"column":13,"index":180},"end":{"line":7,"column":16,"index":183},"filename":"mutate-after-useeffect.ts","identifierName":"foo"}]}
-{"kind":"CompileSuccess","fnLoc":{"start":{"line":4,"column":0,"index":101},"end":{"line":11,"column":1,"index":222},"filename":"mutate-after-useeffect.ts"},"fnName":"Component","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
+{"kind":"CompileError","fnLoc":{"start":{"line":4,"column":0,"index":111},"end":{"line":11,"column":1,"index":242},"filename":"mutate-after-useeffect.ts"},"detail":{"reason":"Updating a value used previously in an effect function or as an effect dependency is not allowed. Consider moving the mutation before calling useEffect()","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":9,"column":2,"index":214},"end":{"line":9,"column":5,"index":217},"filename":"mutate-after-useeffect.ts","identifierName":"arr"}}}
+{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":6,"column":2,"index":159},"end":{"line":8,"column":14,"index":210},"filename":"mutate-after-useeffect.ts"},"decorations":[{"start":{"line":7,"column":4,"index":181},"end":{"line":7,"column":7,"index":184},"filename":"mutate-after-useeffect.ts","identifierName":"arr"},{"start":{"line":7,"column":4,"index":181},"end":{"line":7,"column":7,"index":184},"filename":"mutate-after-useeffect.ts","identifierName":"arr"},{"start":{"line":7,"column":13,"index":190},"end":{"line":7,"column":16,"index":193},"filename":"mutate-after-useeffect.ts","identifierName":"foo"}]}
+{"kind":"CompileSuccess","fnLoc":{"start":{"line":4,"column":0,"index":111},"end":{"line":11,"column":1,"index":242},"filename":"mutate-after-useeffect.ts"},"fnName":"Component","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
 ```
       
 ### Eval output

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/bailout-retry/mutate-after-useeffect.js

@@ -1,11 +1,11 @@
 // @inferEffectDependencies @panicThreshold:"none" @loggerTestOnly
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 
 function Component({foo}) {
   const arr = [];
   useEffect(() => {
     arr.push(foo);
-  });
+  }, AUTODEPS);
   arr.push(2);
   return arr;
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/error.wrong-index-no-func.expect.md

@@ -0,0 +1,26 @@
+
+## Input
+
+```javascript
+// @inferEffectDependencies
+import {useEffect, AUTODEPS} from 'react';
+
+function Component({foo}) {
+  useEffect(AUTODEPS);
+}
+
+```
+
+
+## Error
+
+```
+  3 |
+  4 | function Component({foo}) {
+> 5 |   useEffect(AUTODEPS);
+    |   ^^^^^^^^^^^^^^^^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (5:5)
+  6 | }
+  7 |
+```
+          
+      

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/error.wrong-index-no-func.js

@@ -0,0 +1,6 @@
+// @inferEffectDependencies
+import {useEffect, AUTODEPS} from 'react';
+
+function Component({foo}) {
+  useEffect(AUTODEPS);
+}

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/error.wrong-index.expect.md

@@ -0,0 +1,45 @@
+
+## Input
+
+```javascript
+// @inferEffectDependencies
+import {AUTODEPS} from 'react';
+import useEffectWrapper from 'useEffectWrapper';
+
+function Component({foo}) {
+  useEffectWrapper(
+    () => {
+      console.log(foo);
+    },
+    [foo],
+    AUTODEPS
+  );
+}
+
+```
+
+
+## Error
+
+```
+   4 |
+   5 | function Component({foo}) {
+>  6 |   useEffectWrapper(
+     |   ^^^^^^^^^^^^^^^^^
+>  7 |     () => {
+     | ^^^^^^^^^^^
+>  8 |       console.log(foo);
+     | ^^^^^^^^^^^
+>  9 |     },
+     | ^^^^^^^^^^^
+> 10 |     [foo],
+     | ^^^^^^^^^^^
+> 11 |     AUTODEPS
+     | ^^^^^^^^^^^
+> 12 |   );
+     | ^^^^ InvalidReact: [InferEffectDependencies] React Compiler is unable to infer dependencies of this effect. This will break your build! To resolve, either pass your own dependency array or fix reported compiler bailout diagnostics. (6:12)
+  13 | }
+  14 |
+```
+          
+      

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/error.wrong-index.js

@@ -0,0 +1,13 @@
+// @inferEffectDependencies
+import {AUTODEPS} from 'react';
+import useEffectWrapper from 'useEffectWrapper';
+
+function Component({foo}) {
+  useEffectWrapper(
+    () => {
+      console.log(foo);
+    },
+    [foo],
+    AUTODEPS
+  );
+}

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/helper-nonreactive.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 function useCustomRef() {
   const ref = useRef();
   return ref;
@@ -12,7 +12,7 @@ function NonReactiveWrapper() {
   const ref = useCustomRef();
   useEffect(() => {
     print(ref);
-  });
+  }, AUTODEPS);
 }
 
 ```
@@ -21,7 +21,7 @@ function NonReactiveWrapper() {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
-import { useEffect, useRef } from "react";
+import { useEffect, useRef, AUTODEPS } from "react";
 function useCustomRef() {
   const ref = useRef();
   return ref;

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/helper-nonreactive.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 function useCustomRef() {
   const ref = useRef();
   return ref;
@@ -8,5 +8,5 @@ function NonReactiveWrapper() {
   const ref = useCustomRef();
   useEffect(() => {
     print(ref);
-  });
+  }, AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/import-namespace-useEffect.expect.md

@@ -8,8 +8,8 @@ import * as SharedRuntime from 'shared-runtime';
 
 function NonReactiveDepInEffect() {
   const obj = makeObject_Primitives();
-  React.useEffect(() => print(obj));
-  SharedRuntime.useSpecialEffect(() => print(obj), [obj]);
+  React.useEffect(() => print(obj), React.AUTODEPS);
+  SharedRuntime.useSpecialEffect(() => print(obj), [obj], React.AUTODEPS);
 }
 
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/import-namespace-useEffect.js

@@ -4,6 +4,6 @@ import * as SharedRuntime from 'shared-runtime';
 
 function NonReactiveDepInEffect() {
   const obj = makeObject_Primitives();
-  React.useEffect(() => print(obj));
-  SharedRuntime.useSpecialEffect(() => print(obj), [obj]);
+  React.useEffect(() => print(obj), React.AUTODEPS);
+  SharedRuntime.useSpecialEffect(() => print(obj), [obj], React.AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/infer-deps-custom-config.expect.md

@@ -4,10 +4,11 @@
 ```javascript
 // @inferEffectDependencies
 import {print, useSpecialEffect} from 'shared-runtime';
+import {AUTODEPS} from 'react';
 
 function CustomConfig({propVal}) {
   // Insertion
-  useSpecialEffect(() => print(propVal), [propVal]);
+  useSpecialEffect(() => print(propVal), [propVal], AUTODEPS);
   // No insertion
   useSpecialEffect(() => print(propVal), [propVal], [propVal]);
 }
@@ -19,6 +20,7 @@ function CustomConfig({propVal}) {
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
 import { print, useSpecialEffect } from "shared-runtime";
+import { AUTODEPS } from "react";
 
 function CustomConfig(t0) {
   const $ = _c(7);

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/infer-deps-custom-config.js

@@ -1,9 +1,10 @@
 // @inferEffectDependencies
 import {print, useSpecialEffect} from 'shared-runtime';
+import {AUTODEPS} from 'react';
 
 function CustomConfig({propVal}) {
   // Insertion
-  useSpecialEffect(() => print(propVal), [propVal]);
+  useSpecialEffect(() => print(propVal), [propVal], AUTODEPS);
   // No insertion
   useSpecialEffect(() => print(propVal), [propVal], [propVal]);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/infer-effect-dependencies.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 import useEffectWrapper from 'useEffectWrapper';
 
 const moduleNonReactive = 0;
@@ -24,7 +24,7 @@ function Component({foo, bar}) {
     console.log(ref.current);
     console.log(localNonPrimitiveReactive);
     console.log(localNonPrimitiveNonreactive);
-  });
+  }, AUTODEPS);
 
   // Optional chains and property accesses
   // TODO: we may be able to save bytes by omitting property accesses if the
@@ -32,11 +32,11 @@ function Component({foo, bar}) {
   useEffect(() => {
     console.log(bar?.baz);
     console.log(bar.qux);
-  });
+  }, AUTODEPS);
 
   useEffectWrapper(() => {
     console.log(foo);
-  });
+  }, AUTODEPS);
 }
 
 ```
@@ -45,7 +45,7 @@ function Component({foo, bar}) {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
-import { useEffect, useRef } from "react";
+import { useEffect, useRef, AUTODEPS } from "react";
 import useEffectWrapper from "useEffectWrapper";
 
 const moduleNonReactive = 0;

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/infer-effect-dependencies.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 import useEffectWrapper from 'useEffectWrapper';
 
 const moduleNonReactive = 0;
@@ -20,7 +20,7 @@ function Component({foo, bar}) {
     console.log(ref.current);
     console.log(localNonPrimitiveReactive);
     console.log(localNonPrimitiveNonreactive);
-  });
+  }, AUTODEPS);
 
   // Optional chains and property accesses
   // TODO: we may be able to save bytes by omitting property accesses if the
@@ -28,9 +28,9 @@ function Component({foo, bar}) {
   useEffect(() => {
     console.log(bar?.baz);
     console.log(bar.qux);
-  });
+  }, AUTODEPS);
 
   useEffectWrapper(() => {
     console.log(foo);
-  });
+  }, AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/no-emit/no-emit-lint-repro.expect.md

@@ -5,10 +5,11 @@
 // @inferEffectDependencies @noEmit
 import {print} from 'shared-runtime';
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 function ReactiveVariable({propVal}) {
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 }
 
 ```
@@ -19,10 +20,11 @@ function ReactiveVariable({propVal}) {
 // @inferEffectDependencies @noEmit
 import { print } from "shared-runtime";
 import useEffectWrapper from "useEffectWrapper";
+import { AUTODEPS } from "react";
 
 function ReactiveVariable({ propVal }) {
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 }
 
 ```

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/no-emit/no-emit-lint-repro.js

@@ -1,8 +1,9 @@
 // @inferEffectDependencies @noEmit
 import {print} from 'shared-runtime';
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 function ReactiveVariable({propVal}) {
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/no-emit/retry-no-emit.expect.md

@@ -5,13 +5,14 @@
 // @inferEffectDependencies @noEmit @panicThreshold:"none" @loggerTestOnly
 import {print} from 'shared-runtime';
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 function Foo({propVal}) {
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 
   const arr2 = [];
-  useEffectWrapper(() => arr2.push(propVal));
+  useEffectWrapper(() => arr2.push(propVal), AUTODEPS);
   arr2.push(2);
   return {arr, arr2};
 }
@@ -30,13 +31,14 @@ export const FIXTURE_ENTRYPOINT = {
 // @inferEffectDependencies @noEmit @panicThreshold:"none" @loggerTestOnly
 import { print } from "shared-runtime";
 import useEffectWrapper from "useEffectWrapper";
+import { AUTODEPS } from "react";
 
 function Foo({ propVal }) {
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 
   const arr2 = [];
-  useEffectWrapper(() => arr2.push(propVal));
+  useEffectWrapper(() => arr2.push(propVal), AUTODEPS);
   arr2.push(2);
   return { arr, arr2 };
 }
@@ -52,10 +54,10 @@ export const FIXTURE_ENTRYPOINT = {
 ## Logs
 
 ```
-{"kind":"CompileError","fnLoc":{"start":{"line":5,"column":0,"index":163},"end":{"line":13,"column":1,"index":357},"filename":"retry-no-emit.ts"},"detail":{"reason":"Updating a value previously passed as an argument to a hook is not allowed. Consider moving the mutation before calling the hook","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":11,"column":2,"index":320},"end":{"line":11,"column":6,"index":324},"filename":"retry-no-emit.ts","identifierName":"arr2"}}}
-{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":7,"column":2,"index":216},"end":{"line":7,"column":36,"index":250},"filename":"retry-no-emit.ts"},"decorations":[{"start":{"line":7,"column":31,"index":245},"end":{"line":7,"column":34,"index":248},"filename":"retry-no-emit.ts","identifierName":"arr"}]}
-{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":10,"column":2,"index":274},"end":{"line":10,"column":44,"index":316},"filename":"retry-no-emit.ts"},"decorations":[{"start":{"line":10,"column":25,"index":297},"end":{"line":10,"column":29,"index":301},"filename":"retry-no-emit.ts","identifierName":"arr2"},{"start":{"line":10,"column":25,"index":297},"end":{"line":10,"column":29,"index":301},"filename":"retry-no-emit.ts","identifierName":"arr2"},{"start":{"line":10,"column":35,"index":307},"end":{"line":10,"column":42,"index":314},"filename":"retry-no-emit.ts","identifierName":"propVal"}]}
-{"kind":"CompileSuccess","fnLoc":{"start":{"line":5,"column":0,"index":163},"end":{"line":13,"column":1,"index":357},"filename":"retry-no-emit.ts"},"fnName":"Foo","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
+{"kind":"CompileError","fnLoc":{"start":{"line":6,"column":0,"index":195},"end":{"line":14,"column":1,"index":409},"filename":"retry-no-emit.ts"},"detail":{"reason":"Updating a value previously passed as an argument to a hook is not allowed. Consider moving the mutation before calling the hook","description":null,"severity":"InvalidReact","suggestions":null,"loc":{"start":{"line":12,"column":2,"index":372},"end":{"line":12,"column":6,"index":376},"filename":"retry-no-emit.ts","identifierName":"arr2"}}}
+{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":8,"column":2,"index":248},"end":{"line":8,"column":46,"index":292},"filename":"retry-no-emit.ts"},"decorations":[{"start":{"line":8,"column":31,"index":277},"end":{"line":8,"column":34,"index":280},"filename":"retry-no-emit.ts","identifierName":"arr"}]}
+{"kind":"AutoDepsDecorations","fnLoc":{"start":{"line":11,"column":2,"index":316},"end":{"line":11,"column":54,"index":368},"filename":"retry-no-emit.ts"},"decorations":[{"start":{"line":11,"column":25,"index":339},"end":{"line":11,"column":29,"index":343},"filename":"retry-no-emit.ts","identifierName":"arr2"},{"start":{"line":11,"column":25,"index":339},"end":{"line":11,"column":29,"index":343},"filename":"retry-no-emit.ts","identifierName":"arr2"},{"start":{"line":11,"column":35,"index":349},"end":{"line":11,"column":42,"index":356},"filename":"retry-no-emit.ts","identifierName":"propVal"}]}
+{"kind":"CompileSuccess","fnLoc":{"start":{"line":6,"column":0,"index":195},"end":{"line":14,"column":1,"index":409},"filename":"retry-no-emit.ts"},"fnName":"Foo","memoSlots":0,"memoBlocks":0,"memoValues":0,"prunedMemoBlocks":0,"prunedMemoValues":0}
 ```
       
 ### Eval output

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/no-emit/retry-no-emit.js

@@ -1,13 +1,14 @@
 // @inferEffectDependencies @noEmit @panicThreshold:"none" @loggerTestOnly
 import {print} from 'shared-runtime';
 import useEffectWrapper from 'useEffectWrapper';
+import {AUTODEPS} from 'react';
 
 function Foo({propVal}) {
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 
   const arr2 = [];
-  useEffectWrapper(() => arr2.push(propVal));
+  useEffectWrapper(() => arr2.push(propVal), AUTODEPS);
   arr2.push(2);
   return {arr, arr2};
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/no-emit/retry-opt-in--no-emit.expect.md

@@ -4,15 +4,16 @@
 ```javascript
 // @compilationMode:"all" @inferEffectDependencies @panicThreshold:"none" @noEmit
 import {print} from 'shared-runtime';
+import {AUTODEPS} from 'react';
 import useEffectWrapper from 'useEffectWrapper';
 
 function Foo({propVal}) {
   'use memo';
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 
   const arr2 = [];
-  useEffectWrapper(() => arr2.push(propVal));
+  useEffectWrapper(() => arr2.push(propVal), AUTODEPS);
   arr2.push(2);
 
   return {arr, arr2};
@@ -31,15 +32,16 @@ export const FIXTURE_ENTRYPOINT = {
 ```javascript
 // @compilationMode:"all" @inferEffectDependencies @panicThreshold:"none" @noEmit
 import { print } from "shared-runtime";
+import { AUTODEPS } from "react";
 import useEffectWrapper from "useEffectWrapper";
 
 function Foo({ propVal }) {
   "use memo";
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 
   const arr2 = [];
-  useEffectWrapper(() => arr2.push(propVal));
+  useEffectWrapper(() => arr2.push(propVal), AUTODEPS);
   arr2.push(2);
 
   return { arr, arr2 };

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/no-emit/retry-opt-in--no-emit.js

@@ -1,14 +1,15 @@
 // @compilationMode:"all" @inferEffectDependencies @panicThreshold:"none" @noEmit
 import {print} from 'shared-runtime';
+import {AUTODEPS} from 'react';
 import useEffectWrapper from 'useEffectWrapper';
 
 function Foo({propVal}) {
   'use memo';
   const arr = [propVal];
-  useEffectWrapper(() => print(arr));
+  useEffectWrapper(() => print(arr), AUTODEPS);
 
   const arr2 = [];
-  useEffectWrapper(() => arr2.push(propVal));
+  useEffectWrapper(() => arr2.push(propVal), AUTODEPS);
   arr2.push(2);
 
   return {arr, arr2};

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-dep.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {makeObject_Primitives, print} from 'shared-runtime';
 
 /**
@@ -25,7 +25,7 @@ import {makeObject_Primitives, print} from 'shared-runtime';
  */
 function NonReactiveDepInEffect() {
   const obj = makeObject_Primitives();
-  useEffect(() => print(obj));
+  useEffect(() => print(obj), AUTODEPS);
 }
 
 ```
@@ -34,7 +34,7 @@ function NonReactiveDepInEffect() {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
-import { useEffect } from "react";
+import { useEffect, AUTODEPS } from "react";
 import { makeObject_Primitives, print } from "shared-runtime";
 
 /**

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-dep.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {makeObject_Primitives, print} from 'shared-runtime';
 
 /**
@@ -21,5 +21,5 @@ import {makeObject_Primitives, print} from 'shared-runtime';
  */
 function NonReactiveDepInEffect() {
   const obj = makeObject_Primitives();
-  useEffect(() => print(obj));
+  useEffect(() => print(obj), AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-effect-event.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies
-import {useEffect, useEffectEvent} from 'react';
+import {useEffect, useEffectEvent, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 /**
@@ -11,7 +11,7 @@ import {print} from 'shared-runtime';
  */
 function NonReactiveEffectEvent() {
   const fn = useEffectEvent(() => print('hello world'));
-  useEffect(() => fn());
+  useEffect(() => fn(), AUTODEPS);
 }
 
 ```
@@ -20,7 +20,7 @@ function NonReactiveEffectEvent() {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
-import { useEffect, useEffectEvent } from "react";
+import { useEffect, useEffectEvent, AUTODEPS } from "react";
 import { print } from "shared-runtime";
 
 /**

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-effect-event.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies
-import {useEffect, useEffectEvent} from 'react';
+import {useEffect, useEffectEvent, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 /**
@@ -7,5 +7,5 @@ import {print} from 'shared-runtime';
  */
 function NonReactiveEffectEvent() {
   const fn = useEffectEvent(() => print('hello world'));
-  useEffect(() => fn());
+  useEffect(() => fn(), AUTODEPS);
 }

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-ref-helper.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 /**
@@ -19,7 +19,7 @@ function RefsInEffects() {
   useEffect(() => {
     print(ref.current);
     print(wrapped.foo.current);
-  });
+  }, AUTODEPS);
 }
 
 function useRefHelper() {
@@ -36,7 +36,7 @@ function useDeeperRefHelper() {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
-import { useEffect } from "react";
+import { useEffect, AUTODEPS } from "react";
 import { print } from "shared-runtime";
 
 /**

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-ref-helper.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies
-import {useEffect} from 'react';
+import {useEffect, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 /**
@@ -15,7 +15,7 @@ function RefsInEffects() {
   useEffect(() => {
     print(ref.current);
     print(wrapped.foo.current);
-  });
+  }, AUTODEPS);
 }
 
 function useRefHelper() {

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-ref.expect.md

@@ -3,7 +3,7 @@
 
 ```javascript
 // @inferEffectDependencies
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 /**
@@ -14,7 +14,7 @@ import {print} from 'shared-runtime';
  */
 function NonReactiveRefInEffect() {
   const ref = useRef('initial value');
-  useEffect(() => print(ref.current));
+  useEffect(() => print(ref.current), AUTODEPS);
 }
 
 ```
@@ -23,7 +23,7 @@ function NonReactiveRefInEffect() {
 
 ```javascript
 import { c as _c } from "react/compiler-runtime"; // @inferEffectDependencies
-import { useEffect, useRef } from "react";
+import { useEffect, useRef, AUTODEPS } from "react";
 import { print } from "shared-runtime";
 
 /**

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/infer-effect-dependencies/nonreactive-ref.js

@@ -1,5 +1,5 @@
 // @inferEffectDependencies
-import {useEffect, useRef} from 'react';
+import {useEffect, useRef, AUTODEPS} from 'react';
 import {print} from 'shared-runtime';
 
 /**
@@ -10,5 +10,5 @@ import {print} from 'shared-runtime';
  */
 function NonReactiveRefInEffect() {
   const ref = useRef('initial value');
-  useEffect(() => print(ref.current));
+  useEffect(() => print(ref.current), AUTODEPS);
 }