Bring back logging to VS Code's Output panel

Author: Gold856

vscode-wpilib/src/logger.ts

@@ -1,7 +1,9 @@
 'use strict';
 
 import * as path from 'path';
+import * as vscode from 'vscode';
 import * as winston from 'winston';
+import * as TransportStream from 'winston-transport';
 
 export interface ILogger {
   error(message: string, ...meta: unknown[]): void;
@@ -10,6 +12,32 @@ export interface ILogger {
   log(message: string, ...meta: unknown[]): void;
 }
 
+class VsCodeOutputTransport extends TransportStream {
+  private channel: vscode.LogOutputChannel;
+
+  constructor(opts?: TransportStream.TransportStreamOptions) {
+    super(opts);
+    this.channel = vscode.window.createOutputChannel('WPILib', { log: true });
+  }
+
+  public log(info: winston.LogEntry, next: () => void) {
+    setImmediate(() => this.emit('logged', info));
+    switch (info.level) {
+      case 'error':
+        this.channel.error(info.message, info.meta);
+        break;
+      case 'warn':
+        this.channel.warn(info.message, info.meta);
+        break;
+      // Log everything info and below as info
+      default:
+        this.channel.info(info.message, info.meta);
+        break;
+    }
+    next();
+  }
+}
+
 const myFormat = winston.format.printf((info) => {
   return `${info.timestamp} ${info.level}: ${info.message}`;
 });
@@ -18,7 +46,7 @@ const winstonLogger = winston.createLogger({
   exitOnError: false,
   format: winston.format.combine(winston.format.timestamp(), winston.format.simple(), myFormat),
   level: 'verbose',
-  transports: [new winston.transports.Console()],
+  transports: [new VsCodeOutputTransport()],
 });
 
 export function closeLogger() {