fix: 微信登录补充保存username和role

node_modules/licia/isBuffer.js

@@ -0,0 +1,12 @@
+var isFn = require('./isFn');
+exports = function(val) {
+    if (val == null) return false;
+    if (val._isBuffer) return true;
+    return (
+        val.constructor &&
+        isFn(val.constructor.isBuffer) &&
+        val.constructor.isBuffer(val)
+    );
+};
+
+module.exports = exports;