直接在终端里执行以下命令即可：
# 切换到淘宝源（推荐）
npm config set registry https://registry.npmmirror.com
# 或者切换到华为云源
npm config set registry https://repo.huaweicloud.com/repository/npm/
# 或者切换到腾讯云源
npm config set registry https://mirrors.cloud.tencent.com/npm/
npm config set registry https://registry.npmmirror.com
验证是否成功：
npm config get registry
# 应该会显示你刚才设置的源地址
如何恢复官方源：
npm config set registry https://registry.npmjs.org
