added unit testing, and started implementing unit tests...phew

node_modules/wide-align/align.js

@@ -0,0 +1,65 @@
+'use strict'
+var stringWidth = require('string-width')
+
+exports.center = alignCenter
+exports.left = alignLeft
+exports.right = alignRight
+
+// lodash's way of generating pad characters.
+
+function createPadding (width) {
+  var result = ''
+  var string = ' '
+  var n = width
+  do {
+    if (n % 2) {
+      result += string;
+    }
+    n = Math.floor(n / 2);
+    string += string;
+  } while (n);
+
+  return result;
+}
+
+function alignLeft (str, width) {
+  var trimmed = str.trimRight()
+  if (trimmed.length === 0 && str.length >= width) return str
+  var padding = ''
+  var strWidth = stringWidth(trimmed)
+
+  if (strWidth < width) {
+    padding = createPadding(width - strWidth)
+  }
+
+  return trimmed + padding
+}
+
+function alignRight (str, width) {
+  var trimmed = str.trimLeft()
+  if (trimmed.length === 0 && str.length >= width) return str
+  var padding = ''
+  var strWidth = stringWidth(trimmed)
+
+  if (strWidth < width) {
+    padding = createPadding(width - strWidth)
+  }
+
+  return padding + trimmed
+}
+
+function alignCenter (str, width) {
+  var trimmed = str.trim()
+  if (trimmed.length === 0 && str.length >= width) return str
+  var padLeft = ''
+  var padRight = ''
+  var strWidth = stringWidth(trimmed)
+
+  if (strWidth < width) {
+    var padLeftBy = parseInt((width - strWidth) / 2, 10) 
+    padLeft = createPadding(padLeftBy)
+    padRight = createPadding(width - (strWidth + padLeftBy))
+  }
+
+  return padLeft + trimmed + padRight
+}