Revert "Squash: build: Speed up Webpack builds by applying thread-loader to React Compiler"

This reverts commit 63d4a6e.

Author: HowardBraham

.depcheckrc.yml

@@ -82,7 +82,6 @@ ignores:
   - 'nyc' # coverage
   - 'core-js-pure' # polyfills
   - 'react-compiler-webpack' # build tool
-  - 'thread-loader' # build tool
   # babel
   - '@babel/plugin-transform-logical-assignment-operators'
   - 'babel-plugin-react-compiler'

.eslintrc.base.js

@@ -150,6 +150,7 @@ module.exports = {
         'newlines-between': 'ignore',
         alphabetize: {
           order: 'ignore',
+          orderImportKind: 'ignore',
           caseInsensitive: false,
         },
       },

development/webpack/test/loaders.codeFenceLoader.test.ts

@@ -32,11 +32,10 @@ console.log('I am Groot.');
     const { promise, resolve } = Promise.withResolvers!<CallbackArgs>();
     const mockContext = {
       getOptions: () => {
-        // Options use arrays (as serialized through thread-loader)
         return {
           features: {
-            active: omitFeature ? [] : [featureLabel],
-            all: [featureLabel],
+            active: new Set(omitFeature ? [] : [featureLabel]),
+            all: new Set([featureLabel]),
           },
         };
       },
@@ -92,10 +91,9 @@ console.log('I am Groot.');
       const features: FeatureLabels = { active: new Set(), all: new Set() };
       const result = getCodeFenceLoader(features);
 
-      // Sets are converted to arrays for JSON serialization through thread-loader
       assert.deepStrictEqual(result, {
         loader: require.resolve('../utils/loaders/codeFenceLoader'),
-        options: { features: { active: [], all: [] } },
+        options: { features },
       });
     });
   });

development/webpack/test/loaders.reactCompilerLoader.test.ts

@@ -1,8 +1,10 @@
 import { describe, it, afterEach } from 'node:test';
 import assert from 'node:assert';
 import { LoaderContext } from 'webpack';
-import swcLoader, { type SwcLoaderOptions } from '../utils/loaders/swcLoader';
-import { type SwcConfig } from '../utils/loaders/getSwcLoader';
+import swcLoader, {
+  type SwcLoaderOptions,
+  type SwcConfig,
+} from '../utils/loaders/swcLoader';
 import { Combination, generateCases } from './helpers';
 
 describe('swcLoader', () => {
@@ -97,10 +99,10 @@ describe('swcLoader', () => {
         // helpers caches `__HMR_READY__` on initialization, so we need to a new
         // one after we mock `process.env.__HMR_READY__`.
         delete require.cache[require.resolve('../utils/helpers')];
-        delete require.cache[require.resolve('../utils/loaders/getSwcLoader')];
+        delete require.cache[require.resolve('../utils/loaders/swcLoader')];
         const {
           getSwcLoader,
-        }: typeof import('../utils/loaders/getSwcLoader') = require('../utils/loaders/getSwcLoader');
+        }: typeof import('../utils/loaders/swcLoader') = require('../utils/loaders/swcLoader');
 
         // note: this test isn't exhaustive of all possible `swcConfig`
         // properties; it is mostly intended as sanity check.