Add back DEBUG logging utilities

lib/base.js

@@ -18,6 +18,7 @@ var FileEditor = require('mem-fs-editor');
 var Conflicter = require('./util/conflicter');
 var Storage = require('./util/storage');
 var promptSuggestion = require('./util/prompt-suggestion');
+var debug = require('debug')('yeoman:generator');
 
 var fileLogger = { write: _.noop, warn: _.noop };
 
@@ -382,7 +383,10 @@ Base.prototype.run = function run(args, cb) {
   }
 
   function addMethod(method, methodName, queueName) {
-    self.env.runLoop.add(queueName || 'default', function (completed) {
+    queueName = queueName || 'default';
+    debug('Queueing ' + methodName + ' in ' + queueName);
+    self.env.runLoop.add(queueName, function (completed) {
+      debug('Running ' + methodName);
       var done = function (err) {
         if (err) self.emit('error', err);
         completed();
@@ -399,6 +403,7 @@ Base.prototype.run = function run(args, cb) {
         method.apply(self, args);
         if (!running) return done();
       } catch (err) {
+        debug('An error occured while running ' + methodName, err);
         self.emit('error', err);
       }
     });
@@ -438,6 +443,7 @@ Base.prototype.run = function run(args, cb) {
   }.bind(this));
 
   this.on('end', function () {
+    debug('Running the hooked generators');
     this.runHooks();
   });
 

readme.md

@@ -34,14 +34,14 @@ node --debug `which yo` <generator> [arguments]
 node --debug <path to yo binary> <generator> [arguments]
 ```
 
-Yeoman generators also use a debug mode to log relevant informations. You can activate it by setting the `DEBUG` environment variable to the desired scope (for the generator system scope is `generators:*`).
+Yeoman generators also use a debug mode to log relevant lifecycle informations. You can activate it by setting the `DEBUG` environment variable to the desired scope (the scope of the generator system is `yeoman:generator`).
 
 ```sh
 # OS X / Linux
-DEBUG=generators/*
+DEBUG=yeoman:generator
 
 # Windows
-set DEBUG=generators/*
+set DEBUG=yeoman:generator
 ```