chore(fix): 🎉 check is node process or browser

Author: TouchSek

src/core/BaseProxy.ts

@@ -115,6 +115,9 @@ class BaseProxy {
       if (!form.hasOwnProperty(property)) {
         return false
       }
+      if (typeof window === 'undefined') {
+        return false
+      }
       if (this.__hasFilesDeep(form[property])) {
         return true
       }

src/util/objects.ts

@@ -5,6 +5,9 @@ export function isArray(object: any): boolean {
 }
 
 export function isFile(object: any): boolean {
+  if (typeof window === 'undefined') {
+    return false
+  }
   if (typeof File !== 'function' || typeof FileList !== 'function') {
     return false
   }