hispanic · November 29, 2015 20:35 · Nov 29, 2015 · Nov 29, 2015
diff --git a/vertically-aligned-log-formatter.js b/vertically-aligned-log-formatter.js
@@ -1,3 +1,9 @@
+/**
+ * The fixed (both minimum and maximum) length of the "level" property in each log entry. 
+ * Longer values will be truncated, while shorter values will be right-padded with spaces.
+ */
+var levelLength = 5;
+
 /**
  * Custom log formatter that enforces vertically-aligned log entry components.
  * 

diff --git a/vertically-aligned-log-formatter.js b/vertically-aligned-log-formatter.js
@@ -0,0 +1,40 @@
+/**
+ * Custom log formatter that enforces vertically-aligned log entry components.
+ * 
+ * @param options - See winston/common.log() for available properties.
+ */
+var logFormatter = function(options) {
+	/* 
+	 * The requested level for this log entry, in plain-text. We need to go back to the source 
+	 * (options) instead of parsing the output because the output might be colorized (encoded).
+	 */
+	var levelFull = options.level;
+	var levelForDisplay = levelFull;
+
+	// Pad the level.
+	if (levelLength > String(levelFull).length) {
+		levelForDisplay = levelFull + Array(levelLength - String(levelFull).length + 1).join(' ');
+	}
+	// And then truncate the level.
+	levelForDisplay = levelForDisplay.substring(0, levelLength);
+
+	/**
+	 * If the level has been colorized, we need to repeat this colorization of both the search 
+	 * and replacement strings.
+	 */
+	if (options.colorize === 'all' || options.colorize === 'level' || options.colorize === true) {
+		levelForDisplay = colors[logColors[levelFull]](levelForDisplay);
+		levelFull = colors[logColors[levelFull]](levelFull);
+	}
+
+	// Unset the formatter in the options argument so we don't end up in an infinite loop.
+	options.formatter = null;
+
+	// Start with winston's default output format.
+	var output = winstonCommon.log(options);
+
+	// Perform the actual replacement.
+	output = output.replace(levelFull, levelForDisplay);
+
+  	return output;
+};