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

// Attaches properties to |exports|.
exports.defineProperties = function (exports) {
  return Object.defineProperties(exports, {
    // Common modules, please sort with alphabet order.
    clipboard: {
      // Must be enumerable, otherwise it woulde be invisible to remote module.
      enumerable: true,
      get: function () {
        return require('../clipboard')
      }
    },
    crashReporter: {
      enumerable: true,
      get: function () {
        return require('../crash-reporter')
      }
    },
    nativeImage: {
      enumerable: true,
      get: function () {
        return require('../native-image')
      }
    },
    shell: {
      enumerable: true,
      get: function () {
        return require('../shell')
      }
    },

    // The internal modules, invisible unless you know their names.
    CallbacksRegistry: {
      get: function () {
        return require('../callbacks-registry')
      }
    },
    deprecate: {
      get: function () {
        return require('../deprecate')
      }
    },
    deprecations: {
      get: function () {
        return require('../deprecations')
      }
    },
    isPromise: {
      get: function () {
        return require('../is-promise')
      }
    }
  })
}