changed error handler to log the error.

Author: ilkerkosaroglu

dist/process-helper.d.ts

@@ -6,6 +6,7 @@ export declare class ProcessHelper extends Messenger {
     private env;
     private childProcess;
     private autoRestartListener;
+    private errorHandler;
     constructor(forkPath: string);
     setEnv(env: any): void;
     isStarted(): boolean;

dist/process-helper.js

@@ -7,6 +7,10 @@ class ProcessHelper extends messenger_1.Messenger {
     constructor(forkPath) {
         super();
         this.forkPath = forkPath;
+        this.errorHandler = (...args) => {
+            console.error('child process error', ...args);
+            this.autoRestartListener?.(...args);
+        };
         ProcessHelper.instances.add(this);
     }
     static killAll() {
@@ -38,7 +42,7 @@ class ProcessHelper extends messenger_1.Messenger {
                     this.start();
                 };
                 this.childProcess.on('exit', this.autoRestartListener);
-                this.childProcess.on('error', this.autoRestartListener);
+                this.childProcess.on('error', this.errorHandler);
             }
             this.connect(this.childProcess);
         }
@@ -49,7 +53,7 @@ class ProcessHelper extends messenger_1.Messenger {
             if (this.childProcess.pid) {
                 this.disconnect();
                 this.childProcess.off('exit', this.autoRestartListener);
-                this.childProcess.off('error', this.autoRestartListener);
+                this.childProcess.off('error', this.errorHandler);
                 this.autoRestartListener = undefined;
                 this.childProcess.kill('SIGTERM');
                 this.childProcess = undefined;

src/process-helper.ts

@@ -18,6 +18,11 @@ export class ProcessHelper extends Messenger {
 
     private autoRestartListener: undefined | ((...args: any[])=> void);
 
+    private errorHandler = (...args: any[]) => {
+        console.error('child process error', ...args);
+        this.autoRestartListener?.(...args);
+    };
+
     constructor(private readonly forkPath: string) {
         super();
 
@@ -59,7 +64,7 @@ export class ProcessHelper extends Messenger {
                 };
 
                 this.childProcess.on('exit', this.autoRestartListener);
-                this.childProcess.on('error', this.autoRestartListener);
+                this.childProcess.on('error', this.errorHandler);
             }
 
             this.connect(this.childProcess);
@@ -73,7 +78,7 @@ export class ProcessHelper extends Messenger {
                 this.disconnect();
 
                 this.childProcess.off('exit', this.autoRestartListener!);
-                this.childProcess.off('error', this.autoRestartListener!);
+                this.childProcess.off('error', this.errorHandler);
                 this.autoRestartListener = undefined;
 
                 this.childProcess.kill('SIGTERM');