🐛 Bug Report

According to pipeline: https://github.com/exceljs/exceljs/actions/runs/4624587709 / https://github.com/exceljs/exceljs/actions/runs/4624587709/jobs/8179721427

1. The tests on node v8 failed. That's a pretty old node version, but still, I would like to keep tests passing as they always pass.
   

2. Node has been released also under versions 18 and 19 which are not covered with tests. I'm going to increase the test coverage.
   

Meantime, I've just lost my job, and have got a little bit more time than usual. I'm going to put my free-run work into exceljs and some other open-source projects. The current progress I will discuss on my new Discord server: https://discord.com/invite/zUQKcUKS. Let's join the community and lead me to a most important part of exceljs where can I improve.
You can also support me by ❤️ GH Sponsors