heap out of memory issue with excel4node

index.js

var excel = require('excel4node')

var workbook = new excel.Workbook({})

for (let s = 0; s < 1; s++) {
    var sheet = workbook.addWorksheet('Contacts'+s)
    for (let rowIndex = 1; rowIndex < 100000; rowIndex++) {
        for (i = 0;i < 15; i++) {
            sheet.cell(rowIndex, +i+1).string('coucou'+rowIndex+'-'+i)
        }
    }
}

workbook.write("test.xlsx", function(err, stats) {
    if (err) {
      console.error("error", err);
    } else {
      console.log("stats",stats);
    }
  }) 
console.log("written")