specify nodejs and npm versions

[pciavald]

Is your feature request related to a problem? Please describe.

it seems we've encountered errors because we're using npm 6.14.11 and you're probably using npm 7 as the package-lock.json says lockfileVersion: 2

Describe the solution you'd like

in CONTRIBUTING.md, could you please add the npm and nodejs versions you are using to do the builds ?

[pciavald]

I still have a difference from your setup i think, see the difference of package-lock.json in #1610

[UnchartedBull]

Which os are you using? Different operating systems can cause differences in the package-lock iirc.

[pciavald]

Fedora 33 workstation

[UnchartedBull]

I'm using a Mac so that is probably why there are still some differences. I think we can safely ignore those though.

[pciavald]

until we find out, i think it's best that when you merge a PR that modifies package.json, you run npm install and commit package-lock.json before merging

[UnchartedBull]

Sounds like a plan 👍