Description

Some background tile providers cause the application to crash (in OL3).

In case of Bug (otherwise remove this paragraph)

Browser Affected
(use this site: https://www.whatsmybrowser.org/ for non expert users)

• Internet Explorer
• Chrome
• Firefox
• Safari

I believe other browser to be affected as well.

Browser Version Affected

67

Steps to reproduce

• Open a map with Stamen background

Expected Result

• Map is shown

Current Result

• Some UI elements are shown, but the map is not functional.

Other useful information (optional):

956845f replaces a for of loop with a .map when preparing URLs for tile providers. for of not only works on arrays, but also on strings. ConfigProvider.js contains definitions for tile providers which use a string and not an array.

The fix is to change the subdomains property of the tile provider from the string e.g. "abcd" to ["a", "b", "c", "d"]