Simpler logging

lib/logger.js

@@ -1,4 +1,11 @@
-import log from 'npmlog';
+import chalk from 'chalk';
+
+let DEBUG_ENABLED = false;
+
+// Turns on debug level logging
+export function setDebugEnabled(enabled) {
+  DEBUG_ENABLED = enabled;
+}
 
 // global cache of logger instances by provider name
 let loggerCache = {};
@@ -8,20 +15,44 @@ export class Logger {
   constructor(providerName: string) {
     this.providerName = providerName;
   }
+
+  debug(msg: string) {
+    if (DEBUG_ENABLED)
+      this.log('debug', msg);
+  }
   
   info(msg: string) {
-    log.info(`[${this.providerName}] ${msg}`);
+    this.log('info', msg);
   }
 
   warn(msg: string) {
-    log.warn(`[${this.providerName}] ${msg}`);
+    this.log('warn', msg);
   }
 
   error(msg: string) {
-    log.error(`[${this.providerName}] ${msg}`);
+    this.log('error', msg);
   }
   
-  static forProvider(providerName: string):Logger {
+  log(level: string, msg: string) {
+    
+    if (level == 'debug')
+      msg = chalk.gray(msg);
+    else if (level == 'warn')
+      msg = chalk.yellow(msg);
+    else if (level == 'error')
+      msg = chalk.bold.red(msg);
+    
+    // prepend provider name if applicable
+    if (this.providerName)
+      msg = chalk.cyan(`[${this.providerName}]`) + " " + msg;
+      
+    console.log(msg);
+  }
+  
+  static forProvider(providerName: string): Logger {
     return loggerCache[providerName] || (loggerCache[providerName] = new Logger(providerName));
   }
-}
+}
+
+// system logger, for internal use only
+export let log = new Logger();