chore: revert some of the universal file stuff for now

packages/cli/src/lib/builder/config.ts

@@ -79,21 +79,6 @@ export const makeConfigs = async (
       mainFields.unshift('browser');
     }
 
-    const commonjsInclude: Array<RegExp | string> = [/node_modules/];
-
-    // Purpose of this file is
-    // to be bridge between
-    // frontend- and backend-
-    // plugins' code
-    const UNIVERSAL_FILE = 'universal.js';
-    const universalPath = paths.resolveTarget(UNIVERSAL_FILE);
-    const universalFileExists = fs.existsSync(universalPath);
-
-    if (universalFileExists) {
-      mainFields.push(UNIVERSAL_FILE);
-      commonjsInclude.push(UNIVERSAL_FILE);
-    }
-
     configs.push({
       input: 'src/index.ts',
       output,
@@ -105,7 +90,7 @@ export const makeConfigs = async (
         }),
         resolve({ mainFields }),
         commonjs({
-          include: commonjsInclude,
+          include: /node_modules/,
           exclude: [/\/[^/]+\.(?:stories|test)\.[^/]+$/],
         }),
         postcss(),

packages/cli/src/lib/diff/handlers.ts

@@ -68,27 +68,6 @@ class PackageJsonHandler {
     await this.syncDependencies('devDependencies');
   }
 
-  private async syncFiles() {
-    const hasUniversalFile = this.targetPkg.files.includes('universal.js');
-    const hasConfigTypeScriptFile =
-      typeof this.targetPkg.configSchema === 'string';
-
-    if (hasUniversalFile || hasConfigTypeScriptFile) {
-      const files = [...this.pkg.files];
-      if (hasUniversalFile) {
-        files.push('universal.js');
-      }
-
-      if (hasConfigTypeScriptFile) {
-        files.push(this.targetPkg.configSchema);
-      }
-
-      await this.syncField('files', { files });
-    } else {
-      await this.syncField('files');
-    }
-  }
-
   // Make sure a field inside package.json is in sync. This mutates the targetObj and writes package.json on change.
   private async syncField(
     fieldName: string,
@@ -126,6 +105,15 @@ class PackageJsonHandler {
     }
   }
 
+  private async syncFiles() {
+    if (typeof this.targetPkg.configSchema === 'string') {
+      const files = [...this.pkg.files, this.targetPkg.configSchema];
+      await this.syncField('files', { files });
+    } else {
+      await this.syncField('files');
+    }
+  }
+
   private async syncScripts() {
     const pkgScripts = this.pkg.scripts;
     const targetScripts = (this.targetPkg.scripts =