Add parameter validation, fixed byte output, updated docblock

debug/filesize.js

@@ -28,20 +28,22 @@
 /**
  * filesize.js
  *
+ * Transforms a file size Number into a readable String
+ * 
  * @author Jason Mulligan <[email protected]>
- * @version 1.3
+ * @module filesize
+ * @version 1.4
+ * 
+ * @param  {Mixed}  arg String, Int or Float to transform
+ * @param  {Number} pos Position to round to
+ * @return {String} Readable file size String
  */
 (function (global) {
 	"use strict";
 
-	/**
-	 * Transforms a file size into a readable String
-	 * 
-	 * @param  {Mixed}  arg String, Int or Float to transform
-	 * @param  {Number} pos Position to round to
-	 * @return {String} Readable file size String
-	 */
 	var filesize = function (arg, pos) {
+		if (isNaN(arg) || (typeof pos !== "undefined" && isNaN(pos))) throw Error("Invalid arguments");
+
 		var num    = String(arg).indexOf(".") > -1 ? parseFloat(arg) : parseInt(arg),
 		    sizes  = [{"B": 0}, {"KB": 1024}, {"MB": 1048576}, {"GB": 1073741824}, {"TB": 1099511627776}],
 		    i      = sizes.length,
@@ -60,7 +62,7 @@
 				}
 			}
 			if (num >= size) {
-				result = (suffix === "B" ? num : (num / size).toFixed(pos)) + suffix;
+				result = (suffix === "B" ? num : (num / size)).toFixed(pos) + suffix;
 				break;
 			}
 		}

production/filesize.js

@@ -28,7 +28,14 @@
 /**
  * filesize.js
  *
+ * Transforms a file size Number into a readable String
+ * 
  * @author Jason Mulligan <[email protected]>
- * @version 1.3
+ * @module filesize
+ * @version 1.4
+ * 
+ * @param  {Mixed}  arg String, Int or Float to transform
+ * @param  {Number} pos Position to round to
+ * @return {String} Readable file size String
  */
-(function(a){"use strict";var b=function(a,b){var c=String(a).indexOf(".")>-1?parseFloat(a):parseInt(a),d=[{B:0},{KB:1024},{MB:1048576},{GB:1073741824},{TB:1099511627776}],e=d.length,f="",g,h,i,j;b=typeof b=="undefined"?2:parseInt(b);while(e--){j=d[e];for(i in j)if(j.hasOwnProperty(i)){g=j[i],h=i;break}if(c>=g){f=(h==="B"?c:(c/g).toFixed(b))+h;break}}return f};typeof define=="function"?define("filesize",function(){return b}):a.filesize=b})(this)
+(function(a){"use strict";var b=function(a,b){if(isNaN(a)||typeof b!="undefined"&&isNaN(b))throw Error("Invalid arguments");var c=String(a).indexOf(".")>-1?parseFloat(a):parseInt(a),d=[{B:0},{KB:1024},{MB:1048576},{GB:1073741824},{TB:1099511627776}],e=d.length,f="",g,h,i,j;b=typeof b=="undefined"?2:parseInt(b);while(e--){j=d[e];for(i in j)if(j.hasOwnProperty(i)){g=j[i],h=i;break}if(c>=g){f=(h==="B"?c:c/g).toFixed(b)+h;break}}return f};typeof define=="function"?define("filesize",function(){return b}):a.filesize=b})(this)