bump

package.json

@@ -1,6 +1,6 @@
 {
   "name": "async-validator",
-  "version": "1.6.8",
+  "version": "1.6.9",
   "description": "validate form asynchronous",
   "keywords": [
     "validator",

src/util.js

@@ -1,24 +1,21 @@
 const formatRegExp = /%[sdj%]/g;
 
-let warning2 = () => {
+export let warning = () => {
 };
 
 // don't print warning message when in production env or node runtime
-if (process.env.NODE_ENV !== 'production' && typeof global === 'undefined') {
-  warning2 = (type, message) => {
+if (process.env.NODE_ENV !== 'production' &&
+  typeof window !== 'undefined' &&
+  typeof document !== 'undefined') {
+  warning = (type, errors) => {
     if (typeof console !== 'undefined' && console.warn) {
-      console.warn(type, message);
+      if (errors.every(e => typeof e === 'string')) {
+        console.warn(type, errors);
+      }
     }
   };
 }
 
-export function warning(type, errors) {
-  // only warn native warning, default type is string, confuses many people...
-  if (errors.every(e => typeof e === 'string')) {
-    warning2(type, errors);
-  }
-}
-
 export function format(...args) {
   let i = 1;
   const f = args[0];