Undefined Variables into index.js causes Rendering Errors

[gustavopvasconcellos]

Describe the bug

When access the department, category or search page, in some cases, the categories variable is undefined and its cause a rendering error. The error occours in most the case on annonimous mode of browser. I belive that error happens when the GraphQL Query doesn't load the information of CategoriesTrees in time and the data doesn't cached.

Possible Solution

Add a condition to blocks execution of the script, e.g typeof categoriesTrees === "undefined" ? /* Loading / : / Execute */

Screenshots

Steps to Reproduce (for bugs)

1. Go to https://shop.eicom.org a online store using StoreBuilder and all of store-theme App components
2. Go to a department or category page.
3. Open the DevTools (Inspect the page) and check the "console" tab to verify any errors
4. This error can be more viewed in a Safari Browser.

Your Environment

• OS: Mac Mojave, Mac High Sierra, Windows 10.
• Browser: Safari 12, Safari 11.1, Chrome 75