Used cjs version of flatted

- esm version used const

Author: pascalgagneur

lib/schemas/schema.js

@@ -3,7 +3,7 @@ import textSchema from './textSchema';
 import optionsSchema from './optionsSchema';
 import customSchema from './customSchema';
 import updateSchema from './updateSchema';
-import { stringify } from 'flatted';
+import { stringify } from 'flatted/cjs';
 
 const schema = {
   parse(step) {

lib/storage.js

@@ -1,4 +1,4 @@
-import { stringify, parse } from 'flatted';
+import { stringify, parse } from 'flatted/cjs'
 
 /* istanbul ignore next */
 const getData = (params, callback) => {