dependency-resolution.js

function getModules(entry) {
  const rootModule = createModuleObject(entry)
  const modules = [rootModule]

  // Iterate over the modules, even when new 
  // ones are being added
  for (const module of modules) {
    module.map = {} // Where we will keep the module maps

    module.requires.forEach(dependency => {
      const basedir = path.dirname(module.filepath)
      const dependencyPath = resolve(dependency, { basedir })

      const dependencyObject = createModuleObject(dependencyPath)

      module.map[dependency] = dependencyObject.id
      modules.push(dependencyObject)
    })
  }

  return modules
}