Limit environment variables to expose to webpack (#7480)

config/webpack/configuration.js

@@ -33,7 +33,10 @@ const output = {
 module.exports = {
   settings,
   themes,
-  env,
+  env: {
+    CDN_HOST: env.CDN_HOST,
+    NODE_ENV: env.NODE_ENV,
+  },
   loadersDir,
   output,
 };

config/webpack/production.js

@@ -6,7 +6,7 @@ const CompressionPlugin = require('compression-webpack-plugin');
 const sharedConfig = require('./shared.js');
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
 const OfflinePlugin = require('offline-plugin');
-const { publicPath } = require('./configuration.js');
+const { env, publicPath } = require('./configuration.js');
 const path = require('path');
 
 let compressionAlgorithm;
@@ -90,7 +90,7 @@ module.exports = merge(sharedConfig, {
         '**/*.woff',
       ],
       ServiceWorker: {
-        entry: `imports-loader?process.env=>${encodeURIComponent(JSON.stringify(process.env))}!${encodeURI(path.join(__dirname, '../../app/javascript/mastodon/service_worker/entry.js'))}`,
+        entry: `imports-loader?process.env=>${encodeURIComponent(JSON.stringify(env))}!${encodeURI(path.join(__dirname, '../../app/javascript/mastodon/service_worker/entry.js'))}`,
         cacheName: 'mastodon',
         output: '../assets/sw.js',
         publicPath: '/sw.js',