dunno if there are specific requirements, but with npm 8.1.2/nodejs v16.13.1 the build fails
> nx run demo:build:production datahub
'_' is not found in schema
> nx run map-viewer:build:production datahub
'_' is not found in schema
> nx run search:build:production datahub
'_' is not found in schema
> nx run webcomponents:build:production datahub
'_' is not found in schema
> nx run util-data-fetcher:build datahub
Compiling TypeScript files for project "util-data-fetcher"...
Done compiling TypeScript files for project "util-data-fetcher".
> nx run datahub:build:production datahub
'_' is not found in schema
> NX Running target "build" failed
Failed tasks:
- datafeeder:build:production
- demo:build:production
- map-viewer:build:production
- search:build:production
- webcomponents:build:production
- datahub:build:production