expand shorthand hex to 6-digit hex. Fixes #1

index.js

@@ -1,20 +1,35 @@
 module.exports = function hexToRgb (hex) {
-  
+
   if (hex.charAt && hex.charAt(0) === '#') {
-    hex = removeHash(hex);
+    hex = removeHash(hex)
+  }
+
+  if (hex.length === 3) {
+    hex = expand(hex)
   }
-
-  var bigint = parseInt(hex, 16);
-  var r = (bigint >> 16) & 255;
-  var g = (bigint >> 8) & 255;
-  var b = bigint & 255;
 
-  return [r, g, b];
-};
+  var bigint = parseInt(hex, 16)
+  var r = (bigint >> 16) & 255
+  var g = (bigint >> 8) & 255
+  var b = bigint & 255
+
+  return [r, g, b]
+}
 
 function removeHash (hex) {
-
-  var arr = hex.split('');
-  arr.shift();
-  return arr.join('');
-}
+
+  var arr = hex.split('')
+  arr.shift()
+  return arr.join('')
+}
+
+function expand (hex) {
+
+  return hex
+    .split('')
+    .reduce(function (accum, value) {
+
+      return accum.concat([value, value])
+    }, [])
+    .join('')
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hex-to-rgb",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Convert color hex value to rgb",
   "main": "index.js",
   "scripts": {

test.js

@@ -2,7 +2,7 @@ var hexToRgb = require('./index');
 var test = require('tape');
 
 test('converts', function (t) {
-  
+
   t.deepEqual(hexToRgb('000000'), [0,0,0], 'black converted');
   t.deepEqual(hexToRgb('000'), [0,0,0], 'black shorthand converted');
   t.deepEqual(hexToRgb('#ffffff'), [255,255,255], 'white converted with hash');