[web] rm unnecessary webpack configuration (#33587)

GitOrigin-RevId: d9f305e59af2585db096a83c4cbd41ba5f785184

services/web/frontend/macros/cypress-cache-variant.js

@@ -1,23 +0,0 @@
-const path = require('path')
-
-// Returns the cache subdirectory name for the current Cypress CT variant,
-// or null when CYPRESS_RESULTS is not set.
-// Throws if the derived basename is unsafe to prevent path traversal or
-// absolute-path escapes.
-function cypressCacheVariant() {
-  if (!process.env.CYPRESS_RESULTS) return null
-  const variant = path.basename(process.env.CYPRESS_RESULTS)
-  if (
-    !variant ||
-    variant === '.' ||
-    variant === '..' ||
-    path.isAbsolute(variant)
-  ) {
-    throw new Error(
-      `CYPRESS_RESULTS must resolve to a safe basename; got "${process.env.CYPRESS_RESULTS}"`
-    )
-  }
-  return variant
-}
-
-module.exports = cypressCacheVariant

services/web/frontend/macros/invalidate-babel-cache-if-needed.js

@@ -1,13 +1,9 @@
 const fs = require('fs')
 const Path = require('path')
 const Settings = require('@overleaf/settings')
-const cypressCacheVariant = require('./cypress-cache-variant')
 
 module.exports = function invalidateBabelCacheIfNeeded() {
-  // Use a unique subdirectory per Cypress CT variant to avoid parallel jobs
-  // racing on the shared babel cache and state file.
-  const suffix = cypressCacheVariant() ?? ''
-  const cacheDir = Path.join(__dirname, '../../node_modules/.cache', suffix)
+  const cacheDir = Path.join(__dirname, '../../node_modules/.cache')
   const cachePath = Path.join(cacheDir, 'babel-loader')
   const statePath = Path.join(cacheDir, 'last-overleafModuleImports.json')
   let lastState = ''

services/web/webpack.config.dev.js

@@ -5,9 +5,6 @@ const MiniCssExtractPlugin = require('mini-css-extract-plugin')
 const ReactRefreshWebpackPlugin = require('@pmmmwh/react-refresh-webpack-plugin')
 
 const base = require('./webpack.config')
-const cypressCacheVariant = require('./frontend/macros/cypress-cache-variant')
-
-const cypressVariant = cypressCacheVariant()
 
 // if WEBPACK_ENTRYPOINTS is defined, remove any entrypoints that aren't included
 if (process.env.WEBPACK_ENTRYPOINTS) {
@@ -29,17 +26,6 @@ module.exports = merge(base, {
 
   cache: {
     type: 'filesystem',
-    // Use a unique cache directory per Cypress CT variant to avoid
-    // parallel jobs corrupting the shared PackFileCacheStrategy pack files.
-    ...(cypressVariant
-      ? {
-          cacheDirectory: path.resolve(
-            __dirname,
-            'node_modules/.cache/webpack',
-            cypressVariant
-          ),
-        }
-      : {}),
     buildDependencies: {
       config: [
         __filename,

services/web/webpack.config.js

@@ -10,18 +10,10 @@ const {
 
 const PackageVersions = require('./app/src/infrastructure/PackageVersions.js')
 const invalidateBabelCacheIfNeeded = require('./frontend/macros/invalidate-babel-cache-if-needed')
-const cypressCacheVariant = require('./frontend/macros/cypress-cache-variant')
 
 // Make sure that babel-macros are re-evaluated after changing the modules config
 invalidateBabelCacheIfNeeded()
 
-// Use a unique babel-loader cache directory per Cypress CT variant to avoid
-// parallel jobs corrupting the shared cache.
-const cypressVariant = cypressCacheVariant()
-const babelCacheDirectory = cypressVariant
-  ? path.join(__dirname, 'node_modules/.cache', cypressVariant, 'babel-loader')
-  : true
-
 // Generate a hash of entry points, including modules
 const entryPoints = {
   bootstrap: './frontend/js/bootstrap.ts',
@@ -131,7 +123,7 @@ module.exports = {
           {
             loader: 'babel-loader',
             options: {
-              cacheDirectory: babelCacheDirectory,
+              cacheDirectory: true,
               configFile: path.join(__dirname, './babel.config.json'),
             },
           },
@@ -164,7 +156,7 @@ module.exports = {
             options: {
               // Configure babel-loader to cache compiled output so that
               // subsequent compile runs are much faster
-              cacheDirectory: babelCacheDirectory,
+              cacheDirectory: true,
               configFile: path.join(__dirname, './babel.config.json'),
               plugins: [
                 process.env.REACT_REFRESH_ENABLED === 'true' &&