I'm having an issue writing \n to cells. It's stripping them from the file. I'm using version 0.4.2.

When I monkey patch exceljs to use the entities module, it works correctly.

This is not a permanent fix, just demonstrating how to patch it.

var utils = require('exceljs/lib/utils/utils');
utils.xmlEncode = require('entities').encodeXML;

Looking at the xmlEncode function it does look like it's wrong, it's not allowing \n (0x0A) through.