Fix the build script progress bar

holy crap that was driving me up the wall

lib/logger.js

@@ -43,9 +43,12 @@ Logger.prototype.log = function (type, libName, err, libSource) {
 
   var message = makeMsg(err)
 
-  if (this.last == 'progress')
-    process.stdout.write('\033[1F\033[0K')
   if (type !== SUCCESS || this.verbose) {
+    if (this.last == 'progress') {
+      process.stdout.cursorTo(0)
+      process.stdout.write('\033[1F\033[0K')
+      process.stdout.clearLine(1)
+    }
     process.stdout.write(
         strings.rpad((type.toUpperCase() + ':'), 8)[type === ERROR ? 'red' : type === WARNING ? 'yellow' : 'green']
       + ' ' + strings.rpad(libName || 'UNKNOWN LIBRARY', 20).bold
@@ -54,8 +57,8 @@ Logger.prototype.log = function (type, libName, err, libSource) {
     )
     if (libSource)
       console.log(strings.lpad('', 8), Array.isArray(libSource) ? libSource.join(', ') : libSource)
+    this.last = 'log'
   }
-  this.last = 'log'
 }
 
 Logger.prototype.progress = function (completed, total) {
@@ -70,9 +73,13 @@ Logger.prototype.progress = function (completed, total) {
                , PROGRESS_BAR_LENGTH)
              + '| ' + perc + '%' // (' + completed + '/' + total + ')'
 
-  if (this.last == 'progress')
-    process.stdout.write('\033[1F\033[0K')
-  console.log(ps.green.bold)
+  if (this.last == 'progress') {
+    process.stdout.cursorTo(0)
+    process.stdout.write(ps.green.bold)
+    process.stdout.clearLine(1)
+  } else {
+    process.stdout.write(ps.green.bold)
+  }
   this.last = 'progress'
 }