m css yields: (node:25556) Warning: Accessing non-existent property 'lineno'

[RogerHaase]

Upgrading Node to version 14 results in following harmless warning messages:

    (moin-venv-python) C:\git\moin>m css
    Running Stylus to update Modernized theme CSS files...
    (node:25556) Warning: Accessing non-existent property 'lineno' of module exports inside circular dependency
    (Use `node --trace-warnings ...` to show where the warning was created)
    (node:25556) Warning: Accessing non-existent property 'filename' of module exports inside circular dependency
    (node:25556) Warning: Accessing non-existent property 'lineno' of module exports inside circular dependency
    (node:25556) Warning: Accessing non-existent property 'filename' of module exports inside circular dependency
    Success: Modernized CSS files updated.

    Starting directory is C:\git\moin\src\moin\themes\modernized\static\css
    Running lessc to update Basic theme CSS files...
    Success: Basic theme CSS files updated.

The modernized css file is created correctly.

Node nodejs/node#32987 blames it on Stylus stylus/stylus#2534.

Stylus says The issue was fixed by #2538. Current stylus 0.54.8 does not display these warnings anymore.

But we use Stylus 42 per docs:

sudo npm install stylus@0.42.2 -g  # Windows: npm install stylus@0.42.2 -g
# we need 0.42.2 because with more recent versions, --compress compresses
# complete output to 1 line (0.42.2 compresses to 1 line per rule)
stylus -V  # show version number to prove it works

Stylus has been PITA, best alternative is to change Modernized theme to use CSS Variables.

Alternatives:

• use Node version 13.
• ignore the harmless messages