require('asar-require');
 
// if you do this
const foo = require('./a_package.asar/index.js'); // will ok
 
// but this
const foo = require('./a_package.asar'); // will throw error

// require the package
const asarRequireAuto = require('asar-require-auto');
 
// If "./name_of_some_module.asar" exist, it will load it first!
// Other case it will load "./name_of_some_module" like normal.
const some_module = asarRequireAuto('name_of_some_module');