Update to 1.8.3 produces runtime error

This post is intended to help anyone who runs into the same problem: after updating from 1.8.1 to 1.8.3, I got this error when starting one of my applications:

Cannot find module … node_modules@babel\runtime\hepers\objectSpread2

I tried multiple “meteor updates” but that didn’t fix it. I also tried “meteor update --all-packages”, which did nothing even though there are multiple packages listed with updates available.

What eventually fixed this was “npm update”, which installed “@babel/runtime@7.8.0” – and the problem went away!

Just Update the meteor packages babel-compiler and ecmascript should resolve it, see

Worked for me at least.