vuex安装时报错

刚闲的没事，就安装了一下vuex，发现报错了。。。

首先提供下我安装的vue版本，是vue2。

安装vuex命令：npm install vuex --save，发现报错，如下 ：

 查看vuex官网，发现vue2对应vuex3，而vue3对应vuex4，不过切换到vuex3版本时，提供的命令确实是npm install vuex --save。

于是乎，开始百度，发现需要写上安装的vuex具体版本号。找到方案，立马执行，如下：

1、先查看vuex所有版本

$ npm view vuex versions --json
[
  "0.1.0",
  "0.2.0",
  "0.3.0",
  "0.4.0",
  "0.4.1",
  "0.4.2",
  "0.5.0",
  "0.5.1",
  "0.6.1",
  "0.6.2",
  "0.6.3",
  "0.7.0",
  "0.7.1",
  "0.8.0",
  "0.8.1",
  "0.8.2",
  "1.0.0-rc",
  "1.0.0-rc.2",
  "1.0.0",
  "1.0.1",
  "2.0.0-rc.1",
  "2.0.0-rc.3",
  "2.0.0-rc.4",
  "2.0.0-rc.5",
  "2.0.0-rc.6",
  "2.0.0",
  "2.1.0",
  "2.1.1",
  "2.1.2",
  "2.1.3",
  "2.2.0",
  "2.2.1",
  "2.3.0",
  "2.3.1",
  "2.4.0",
  "2.4.1",
  "2.5.0",
  "3.0.0",
  "3.0.1",
  "3.1.0",
  "3.1.1",
  "3.1.2",
  "3.1.3",
  "3.2.0",
  "3.3.0",
  "3.4.0",
  "3.5.0",
  "3.5.1",
  "3.6.0",
  "3.6.1",
  "3.6.2",
  "4.0.0-alpha.1",
  "4.0.0-beta.1",
  "4.0.0-beta.2",
  "4.0.0-beta.3",
  "4.0.0-beta.4",
  "4.0.0-rc.1",
  "4.0.0-rc.2",
  "4.0.0",
  "4.0.1",
  "4.0.2"
]

2、安装具体版本

安装成功，配置文件自动生成vuex及版本号。