Repo for minimalist reproduction of issue with antd / less next@9
git clone ..
npm i will install next@9 and others dependencies
npm run build will issue a error saying
> Build error occurred
{ /Users/jb/dev/sandbox/nextantd/node_modules/antd/lib/style/index.less:1
@import './themes/index';
^
SyntaxError: Invalid or unexpected token
npm i next@8 then npm run build will work like a charm.
if you see an error during the build simply delete .next folder then retry it should pass