[rcr] Remove runtimeModule compiler option

Now that the compiler always injects `react-compiler-runtime`, this
option is unnecessary.

ghstack-source-id: 788fd4f
Pull Request resolved: #31055

Author: poteto

compiler/apps/playground/babel.config.js

@@ -9,13 +9,6 @@ module.exports = function (api) {
   api.cache(true);
   return {
     presets: ['next/babel'],
-    plugins: [
-      [
-        'babel-plugin-react-compiler',
-        {
-          runtimeModule: 'react-compiler-runtime',
-        },
-      ],
-    ],
+    plugins: [['babel-plugin-react-compiler']],
   };
 };

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

@@ -86,17 +86,6 @@ export type PluginOptions = {
    */
   compilationMode: CompilationMode;
 
-  /*
-   * If enabled, Forget will import `useMemoCache` from the given module
-   * instead of `react/compiler-runtime`.
-   *
-   * ```
-   * // If set to "react-compiler-runtime"
-   * import {c as useMemoCache} from 'react-compiler-runtime';
-   * ```
-   */
-  runtimeModule?: string | null | undefined;
-
   /**
    * By default React Compiler will skip compilation of code that suppresses the default
    * React ESLint rules, since this is a strong indication that the code may be breaking React rules
@@ -202,7 +191,6 @@ export const defaultOptions: PluginOptions = {
   logger: null,
   gating: null,
   noEmit: false,
-  runtimeModule: null,
   eslintSuppressionRules: null,
   flowSuppressions: true,
   ignoreUseNoForget: false,

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

@@ -298,7 +298,6 @@ export function compileProgram(
     return;
   }
   const useMemoCacheIdentifier = program.scope.generateUidIdentifier('c');
-  const moduleName = pass.opts.runtimeModule ?? 'react-compiler-runtime';
 
   /*
    * Record lint errors and critical errors as depending on Forget's config,
@@ -605,7 +604,7 @@ export function compileProgram(
     if (needsMemoCacheFunctionImport) {
       updateMemoCacheFunctionImport(
         program,
-        moduleName,
+        'react-compiler-runtime',
         useMemoCacheIdentifier.name,
       );
     }
@@ -638,8 +637,7 @@ function shouldSkipCompilation(
     }
   }
 
-  const moduleName = pass.opts.runtimeModule ?? 'react-compiler-runtime';
-  if (hasMemoCacheFunctionImport(program, moduleName)) {
+  if (hasMemoCacheFunctionImport(program, 'react-compiler-runtime')) {
     return true;
   }
   return false;

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

@@ -48,7 +48,6 @@ function makePluginOptions(
   let enableEmitFreeze = null;
   let enableEmitHookGuards = null;
   let compilationMode: CompilationMode = 'all';
-  let runtimeModule = null;
   let panicThreshold: PanicThresholdOptions = 'all_errors';
   let hookPattern: string | null = null;
   // TODO(@mofeiZ) rewrite snap fixtures to @validatePreserveExistingMemo:false
@@ -103,10 +102,7 @@ function makePluginOptions(
       importSpecifierName: '$dispatcherGuard',
     };
   }
-  const runtimeModuleMatch = /@runtimeModule="([^"]+)"/.exec(firstLine);
-  if (runtimeModuleMatch) {
-    runtimeModule = runtimeModuleMatch[1];
-  }
+
   if (firstLine.includes('@panicThreshold(none)')) {
     panicThreshold = 'none';
   }
@@ -243,7 +239,6 @@ function makePluginOptions(
     gating,
     panicThreshold,
     noEmit: false,
-    runtimeModule,
     eslintSuppressionRules,
     flowSuppressions,
     ignoreUseNoForget,

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/userspace-use-memo-cache.js

@@ -265,7 +265,7 @@ export function doEval(source: string): EvaluatorResult {
         } else {
           return {
             kind: "exception",
-            value: e.stack,
+            value: e.message,
           };
         }
       }