import.meta extends, importer and main module meta datas

[JOTSR]

Can it be useful to add importer informations on import.meta for better logs (and errors without checking all stack trace) ? For instance, a multiple times imported module can log contextualized messages (eg.: in version checker to indicate which module require a specific version ).

import.meta.importer = {
    url: 'importer/url.ts',
    main: true
}

Maybe it can be recursive to get imports chain for some usages

import.meta.importer = {
   url: '...',
   main: ... ,
   importer: { ... }
}

For main module, importer should be set to null
Maybe Deno.mainModule should be moved (or duplicate since import.meta is not accessible outside of modules, eg: REPL) to

import.meta.mainModule = {
   url: '...',
   main: true,
   importer: null //maybe undefined or refers to itself
}