Set lib.js output path to data

webpack.config.js

@@ -1,30 +1,43 @@
 import process from 'node:process';
 import path from 'node:path';
-import os from 'node:os';
 import isDocker from 'is-docker';
 
 /**
  * Get the Webpack configuration for the public/lib.js file.
+ * 1. Docker has got cache and the output file pre-baked.
+ * 2. Non-Docker environments use the global DATA_ROOT variable to determine the cache and output directories.
  * @param {boolean} forceDist Whether to force the use the /dist folder.
  * @returns {import('webpack').Configuration}
+ * @throws {Error} If the DATA_ROOT variable is not set.
  * */
 export default function getPublicLibConfig(forceDist = false) {
     function getCacheDirectory() {
-        // Docker got cache pre-baked into the image.
         if (forceDist || isDocker()) {
             return path.resolve(process.cwd(), 'dist/webpack');
         }
 
-        // Data root is set (should be the case 99.99% of the time).
         if (typeof globalThis.DATA_ROOT === 'string') {
-            return path.resolve(globalThis.DATA_ROOT, '_cache', 'webpack');
+            return path.resolve(globalThis.DATA_ROOT, '_webpack', 'cache');
         }
 
-        // Fallback to the system temp directory.
-        return path.resolve(os.tmpdir(), 'webpack');
+        throw new Error('DATA_ROOT variable is not set.');
+    }
+
+    function getOutputDirectory() {
+        if (forceDist || isDocker()) {
+            return path.resolve(process.cwd(), 'dist');
+        }
+
+        if (typeof globalThis.DATA_ROOT === 'string') {
+            return path.resolve(globalThis.DATA_ROOT, '_webpack', 'output');
+        }
+
+        throw new Error('DATA_ROOT variable is not set.');
     }
 
     const cacheDirectory = getCacheDirectory();
+    const outputDirectory = getOutputDirectory();
+
     return {
         mode: 'production',
         entry: './public/lib.js',
@@ -51,7 +64,7 @@ export default function getPublicLibConfig(forceDist = false) {
             hints: false,
         },
         output: {
-            path: path.resolve(process.cwd(), 'dist'),
+            path: outputDirectory,
             filename: 'lib.js',
             libraryTarget: 'module',
         },