Math formular do not render, save edits fails

[simontaurus]

MWException: Failed to execute Mathoid cli '/usr/local/nodejs/mathoid/node_modules/mathoid/cli.js', reason: /usr/local/nodejs/mathoid/node_modules/speech-rule-engine/node_modules/commander/lib/command.js:70
useColor() ?? (process.stdout.isTTY && process.stdout.hasColors?.()),
^

SyntaxError: Unexpected token ?

Note: Will be fixed by MW > 1.40, see https://www.mediawiki.org/wiki/Extension:Math/en

Default nodejs version v12 in the current Ubuntu base image seems to rejects syntax in the outdated commander 6.2.1 package.

docker-compose-osl-wiki/mediawiki/build/Dockerfile

Line 268 in 5801380

&& apt-get update -y && apt-get install --no-install-recommends -y -o Dpkg::Options::="--force-confold" -y nodejs npm librsvg2-dev build-essential \

Workaround: Downgrade to node v10

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash
source ~/.bashrc
apt remove nodejs
nvm install v10.24.1

create new symlink
ln -s "$(which node)" /usr/bin/node

However, www-data has no permission to access /root/.nvm/versions/node/v10.24.1/bin/

UPDATE: Actual problem is that node_modules/speech-rule-engine/node_modules/commander/ is v13.1.0 which is probably to new for Node v12