electron がインストールできなくて困っています。
何がいけないのでしょうか？

$ lsb_release -a
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

$ sudo apt install nodejs npm libappindicator1
$ sudo npm install -g n
$ sudo n latest
$ sudo npm install -g npm
$ sudo npm install -g electron

> [email protected] postinstall /usr/local/lib/node_modules/electron
> node install.js

/usr/local/lib/node_modules/electron/install.js:48
throw err
^

Error: EACCES: permission denied, mkdir '/usr/local/lib/node_modules/electron/.electron'
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] postinstall: `node install.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

お願いします