1.设置npm/yarn代理

npm

npm config set proxy http://your-proxy:port
npm config set https-proxy http://your-proxy:port

yarn

yarn config set proxy http://your-proxy:port
yarn config set https-proxy http://your-proxy:port

2.设置electron的国内镜像

yarn config set ELECTRON_MIRROR https://npmmirror.com/mirrors/electron/

或者（淘宝镜像）

npm install --save-dev electron --registry=https://registry.npmmirror.com