Function load_module_source 

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

load_module for source the caller already has, compiled under the canonical name it should be known by. Its own imports still go through resolver.

Unlike load_module this ignores any instance seen already holds for name and replaces it: the caller supplied the source, so it means this text rather than whatever was loaded under that name before. That is what makes an explicit reload possible while a plain by-name load stays cached.