Print error logs on dev worker failure

.changeset/plenty-ducks-beam.md

@@ -0,0 +1,5 @@
+---
+"trigger.dev": patch
+---
+
+Output stderr logs on dev worker failure

packages/cli-v3/src/commands/dev.tsx

@@ -670,7 +670,7 @@ function useDev({
                   const parsedError = parseNpmInstallError(e);
 
                   if (typeof parsedError === "string") {
-                    logger.log(`${chalkError("X Error:")} ${parsedError}`);
+                    logger.log(`\n${chalkError("X Error:")} ${parsedError}`);
                   } else {
                     switch (parsedError.type) {
                       case "package-not-found-error": {
@@ -693,6 +693,15 @@ function useDev({
                       }
                     }
                   }
+
+                  const stderr = backgroundWorker.stderr
+                    .map((line) => line.trim())
+                    .filter((line) => line.length > 0)
+                    .join("\n");
+
+                  if (stderr) {
+                    logger.log(`\n${chalkError("X Error logs:")}\n${stderr}`);
+                  }
                 }
               });
             },

packages/cli-v3/src/workers/dev/backgroundWorker.ts

@@ -279,6 +279,7 @@ export class BackgroundWorker {
 
   public tasks: Array<TaskMetadataWithFilePath> = [];
   public metadata: BackgroundWorkerProperties | undefined;
+  public stderr: Array<string> = [];
 
   _taskRunProcesses: Map<string, TaskRunProcess> = new Map();
   private _taskRunProcessesBeingKilled: Set<number> = new Set();
@@ -406,6 +407,10 @@ export class BackgroundWorker {
       child.stdout?.on("data", (data) => {
         logger.log(data.toString());
       });
+
+      child.stderr?.on("data", (data) => {
+        this.stderr.push(data.toString());
+      });
     });
 
     this._initialized = true;