What is the version of node.js used by the Javascript online editor?

I was trying to use the replaceAll function for a Javascript exercise on my home system and found that my home node.js v14.1.0 hadn’t heard of it–seems to have been introduced in v 15…just wondering whether I can write it w/ replace here but submit a replaceAll version.

Actually, using replace for my problem is every bit as easy…but I should know how to find that anyway, and more useful, can one use the online editor for c0de other than the tests?

The test runner uses Node 18: https://github.com/exercism/javascript-test-runner/blob/main/Dockerfile#L1