diff --git a/src/utils.ts b/src/utils.ts
index e01615a..b907e48 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,26 +1,22 @@
-import { isObservable, toJS } from 'mobx'
-
 export const is = {
   fun: (a: unknown): a is Function => typeof a === 'function',
-  obj: (a: unknown): a is AnyObject =>
-    Object.prototype.toString.call(a) === '[object Object]',
+  arr: (a: unknown): a is [] => Array.isArray(a),
+  obj: (a: unknown): a is AnyObject => Object.prototype.toString.call(a) === '[object Object]'
 }
 
-const mapProps = (source: AnyObject) => (operation: Function) => {
-  const target: AnyObject = {}
+export const toData = (source: any): any => {
+  if (is.arr(source)) {
+    return source.map((item) => toData(item))
+  }
 
-  Object.getOwnPropertyNames(source)
-    .filter((key) => !is.fun(source[key]))
-    .forEach((key) => {
-      target[key] = operation(source[key])
-    })
+  if (is.obj(source)) {
+    const target: AnyObject = {}
 
-  return target
-}
+    Object.getOwnPropertyNames(source).forEach((key) => {
+      target[key] = toData(source[key])
+    })
 
-export const toData = (source: any) => {
-  if (is.obj(source)) {
-    return mapProps(source)(isObservable(source) ? toJS : toData)
+    return target
   }
 
   return source