fix: avoid nested template literals in worker code string

Author: glennmichael123

packages/dtsx/src/worker.ts

@@ -238,7 +238,7 @@ export class WorkerPool {
 
                 if (writeOutput) {
                   if (!outPath) {
-                    throw new Error(`Missing outPath for ${filePath}`);
+                    throw new Error('Missing outPath for ' + filePath);
                   }
                   if (bun) {
                     writePromises[i] = bun.write(outPath, content);
@@ -280,7 +280,7 @@ export class WorkerPool {
             }
 
             const errorMessage = errorResults?.length
-              ? (`${errorResults[0].filePath}: ${errorResults[0].error || 'Worker batch failed'}`)
+              ? errorResults[0].filePath + ': ' + (errorResults[0].error || 'Worker batch failed')
               : undefined;
 
             return {
@@ -322,7 +322,7 @@ export class WorkerPool {
             };
           }
 
-          throw new Error(`Unknown task type: ${task.type}`);
+          throw new Error('Unknown task type: ' + task.type);
         } catch (error) {
           return {
             id: task.id,