Linux 下， npm i 老是被killed 已杀死

node：v8.12.0  npm v6.4.1

npm i 安装到一半会报这样到错误，并终止：

npm WARN deprecated [email protected]: If using 2.x branch, please upgrade to at least 2.1.6 to avoid a serious bug with socket data flow and an import issue introduced in 2.1.0
已杀死.............] - fetchMetadata: sill resolveWithNewModule [email protected] checking installable status

百度问题： https://www.cnblogs.com/owenyang/p/4282283.html

原因：机器内存不足

linux 查看内存命令：free -h

            total        used        free      shared  buff/cache   available
Mem:           488M        227M        5.9M        472K        255M        234M
Swap:            0B          0B          0B

加大内存，继续npm i