MISC: Use the same logger everywhere, which output to stderr if possible

common/logger.js

@@ -10,6 +10,7 @@
  */
 
 const winston = require('winston');
+const fs      = require('fs');
 
 const __loggerCustomLevels = {
     label: "default",
@@ -29,13 +30,17 @@ const __loggerCustomLevels = {
     }
 };
 
-const __myFormat = winston.format.printf(({ level, message, label, timestamp }) => {
-    // return `[${timestamp}] ${level}\t ${message}`;
-    return `[${timestamp}] ${message}`;
-});
+var transport;
+if (fs.existsSync("/dev/stderr")) {
+    /* /dev/stderr exists */
+    transport = new winston.transports.Stream({stream: fs.createWriteStream('/dev/stderr')});
+} else {
+    /* No /dev/stderr, may be windob' */
+    transport = new winston.transports.Console();
+}
 
 module.exports = global.logger = module.exports = winston.createLogger({
-    transports: [new winston.transports.Console()],
+    transports: [ transport ],
     level: "debug",
     json: false,
     handleExceptions: true,
@@ -45,6 +50,8 @@ module.exports = global.logger = module.exports = winston.createLogger({
         winston.format.label(),
         winston.format.colorize({ all: true }),
         winston.format.simple(),
-        __myFormat
+        winston.format.printf(({ level, message, label, timestamp }) => {
+            return `[${timestamp}] ${message}`;
+        })
     )
 });

instance/main.js

 const { ipcRenderer } = require('electron');
+const logger = require('../common/logger.js');
 
 const karaJSON = require('../test/dummyKara.json');
 
@@ -8,9 +9,9 @@ window.onload = function(){
         ipcRenderer.send('close-app')
     });
     karaList(karaJSON);
+    logger.debug("Window loaded");
 }
 
-
 function karaList(karas){
     var karaList = "";
     var playingList = "";

main.js

+const logger                 = require.main.require('./common/logger.js');
 const electron               = require('electron')
 const { app, BrowserWindow } = require('electron')
 const { ipcMain }            = require('electron')
 const { fork }               = require('child_process');
 
+/* Sub process for the express server */
+var client;
 
 /** Creates the main window and process for the admin interface
  */
@@ -20,8 +23,6 @@ function createInstanceWindow () {
     win.webContents.openDevTools();
 }
 
-var client;
-
 ipcMain.on('close-app', (evt, arg) => {
     app.quit()
 })
@@ -31,7 +32,7 @@ app.on("quit", () => {
 });
 
 app.on('ready', () => {
-    console.log('Ready');
+    logger.info("Main window is ready");
     createInstanceWindow();
     client = fork('client/main.js');
 });