Can I use the padStart() method?

I am trying to reuse some javascript code I have. it basically takes a sysex current program dump from a KORG Monologue and gets the params to fill a UI. I have it working fine in a NEXT/React app but when I try to use it in a Max for Live Device, I am getting weird errors. the biggest issue is that certain prototype methods like padStart() just don't work. I get `padStart is not a function.`