electron/lib/common/api/exports/electron.js

const moduleList = require('../module-list')

// Attaches properties to |exports|.
exports.defineProperties = function (exports) {
  const descriptors = {}
  for (const module of moduleList) {
    descriptors[module.name] = {
      enumerable: !module.private,
      get: () => require(`../${module.file}`)
    }
  }
  return Object.defineProperties(exports, descriptors)
}