use length iso 10

node_modules/kaefer/lib/util.js

@@ -20,7 +20,7 @@ if (isNode) {
     exports.uid = function(length) {
         var values = new Uint8Array(length);
         window.crypto.getRandomValues(values);
-        return btoa(String.fromCharCode.apply(null, values)).slice(0, 10);
+        return btoa(String.fromCharCode.apply(null, values)).slice(0, length);
     };
 } else {
     exports.uid = function(length) {
@@ -28,8 +28,8 @@ if (isNode) {
         for (var i = 0; i < length; i++) {
             arr[i] = Math.floor(Math.random() * 255);
         }
-        return btoa(String.fromCharCode.apply(null, arr)).slice(0, 10);
+        return btoa(String.fromCharCode.apply(null, arr)).slice(0, length);
     };
 }
 
-});
+});