Function extract_descriptions 

pub fn extract_descriptions(package: &Package) -> HashMap<String, String>

Extract descriptions from all available sources in a Package.

Sources are checked in priority order:

1. scripts-info - Direct descriptions object
2. ntl.descriptions - NTL tool format
3. // comments - Comment keys in scripts object

Examples

let package = parse_package_json(content)?;
let descriptions = extract_descriptions(&package);