Bugfix

Author: phortx

dist/vuex-orm-graphql.es5.js

@@ -1,6 +1,6 @@
 {
   "name": "@vuex-orm/plugin-graphql",
-  "version": "1.0.0-rc.30",
+  "version": "1.0.0-rc.31",
   "description": "Vuex-ORM persistence plugin to sync the store against a GraphQL API.",
   "main": "dist/vuex-orm-graphql.umd.js",
   "module": "dist/vuex-orm-graphql.es5.js",

dist/vuex-orm-graphql.es5.js.map

@@ -107,9 +107,9 @@ export default class Apollo {
   private static getHeaders() {
     const context = Context.getInstance();
 
-    let headers: Object | Function = context.options.headers ? context.options.headers : {};
+    let headers: any = context.options.headers ? context.options.headers : {};
 
-    if (headers instanceof Function) {
+    if (typeof headers === "function") {
       headers = headers(context);
     }