Function load_module_source 

pub fn load_module_source(
    name: &str,
    src: &str,
    resolver: &dyn ModuleResolver,
    ctx: &Ctx,
    seen: &mut Instances,
) -> Result<Value, LoadError>

Loads a module from provided source under name.

Ignores and replaces any existing instance of name in seen, allowing explicit reloads.