npm audit fix

背景：执行npm install 出现如下提醒

added 253 packages from 162 contributors and audited 1117 packages in 42.157s

found 5 vulnerabilities (1 low, 4 high)

run `npm audit fix` to fix them, or `npm audit` for details html

按照控制台提示的命令，输入‘npm audit fix’后，控制台提示：

package update for 5 vulns involved breaking changes

(use `npm audit fix --force` to install breaking changes; or do it by hand)

输入：‘npm audit fix --force’后，控制台提示：

added 199 packages from 111 contributors, removed 64 packages and updated 23 packages in 42.194sfixed 5 of 5 vulnerabilities in 1117 scanned packages

1 package update for 5 vulns involved breaking changes

(installed due to `--force` option)

重新输入‘npm audit’：

 === npm audit security report === found 0 vulnerabilities in 4598 scanned packages 

终于一切正常。

出于好奇，从npm官网上查阅了对于npm audit fix的相关介绍。

npm audit ： npm@5.10.0 & npm@6，允许开发人员分析复杂的代码，并查明特定的漏洞和缺陷。

npm audit fix ：npm@6.1.0,  检测项目依赖中的漏洞并自动安装需要更新的有漏洞的依赖，而不必再自己进行跟踪和修复。