user@userdeMacBook-Pro:~/$ sudo npm install -g electron

/usr/local/bin/electron -> /usr/local/lib/node_modules/electron/cli.js

> electron@1.4.5 postinstall /usr/local/lib/node_modules/electron

> node install.js

Downloading electron-v1.4.5-darwin-x64.zip

[============================================>] 100.0% of 42.06 MB (801.05 kB/s)

/usr/local/lib/node_modules/electron/install.js:22

  throw err

  ^

Error: EACCES: permission denied, link '/usr/local/lib/node_modules/electron/electron-tmp-download-3321-1478482599943/electron-v1.4.5-darwin-x64.zip' -> '/Users/user/.electron/electron-v1.4.5-darwin-x64.zip'

    at Error (native)

npm ERR! Darwin 15.6.0

npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "electron"

npm ERR! node v6.9.1

npm ERR! npm  v4.0.1

npm ERR! code ELIFECYCLE

npm ERR! electron@1.4.5 postinstall: `node install.js`

npm ERR! Exit status 1

解决方法：

rm -rf ~/.electronmkdir ~/.electronchmod 777 ~/.electron/sudo npm -g install electron