TypeError: parent.before is not a function

[Andrew Stobie]

When I go to build with postcss-nesting in my postcss.config.js

I get an error of:

TypeError: parent.before is not a function
    at Array.forEach (<anonymous>)
    at Array.forEach (<anonymous>)

with my package.json containing:

"postcss": "7.0.3", "postcss-color-function": "^4.0.1", "postcss-custom-media": "7.0.4", "postcss-custom-properties": "^8.0.6", "postcss-flexbugs-fixes": "^4.1.0", "postcss-loader": "^3.0.0", "postcss-mixins": "^6.2.0", "postcss-nesting": "^7.0.0", "postcss-sorting": "^4.0.0",

when I take out postcss-nesting it builds fine.

[Jonathan Neal]

I’m sorry you’re having this issue. Would you please be able to put together a small repository that recreates the issue? Unfortunately, I would not be able to figure out which plugin (postcss-nesting or otherwise) against which combination of css causes this issue.

[Jonathan Neal]

Closing due to a week of inactivity.