Pops up this error on Safari 12.1.2:

elevateLakes@main.js?version=1.0:1103:10 generate@main.js?version=1.0:593:17 generateMapOnLoad@main.js?version=1.0:198:11 checkLoadParameters@main.js?version=1.0:170:20 global code@main.js?version=1.0:171:2

Console says: TypeError: undefined is not an object (evaluating 'religCells.sort((a,b) => b.pop - a.pop)[0]')