Error upgrading from angular 11.2 to 12.2 - styles.css - Error: (0 , _identifier.getUndoPath) is not a function

Question

Like the title says, I'm getting an error building my angular app after using the ng cli to upgrade from angular 11.2 to 12.2:

styles.css - Error: (0 , _identifier.getUndoPath) is not a function

I don't have a styles.css file (using styles.scss), nor do I see anywhere that file is referenced. Any idea what the issue could be?

Answer 1

@angular-devkit/[email protected] seems to be the issue. Downgrading it to 12.1.1 fixes the issue for me (while the Angular team fixes the real thing)

Answer 2

For me deleting package.lock & node_modules/* fixed the issue.

Source: https://github.com/angular/angular-cli/issues/21567 | https://github.com/angular/angular-cli/issues/21628