npm install 报错，提示`gyp ERR! stack Error: EACCES: permission denied` 解决方法

m install 报错，提示gyp ERR! stack Error: EACCES: permission denied

猜测可能是因为没有权限读写，ls -la看下文件权限设置情况

[root@root vendors]# ls -la
drwxr-xr-x 307 root root  12288 Jun  5 23:08 node_modules
-rwxr-xr-x   1 root root   5880 Jun  5 23:06 package.json
-rw-r--r--   1 root root 900847 Jun  5 23:06 package-lock.json

只有root用户组有读写权限，其他只读，将node_modules文件夹修改权限，再执行看看

[root@root vendors]# npm i --production

> jsonpath@1.0.2 postinstall /www/server/yapi/vendors/node_modules/jsonpath
> node lib/aesprim.js > generated/aesprim-browser.js

sh: generated/aesprim-browser.js: Permission denied
npm WARN mongoose-auto-increment@5.0.1 requires a peer of mongoose@^4.1.12 but none is installed. You must install peer dependencies yourself.

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! jsonpath@1.0.2 postinstall: `node lib/aesprim.js > generated/aesprim-browser.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the jsonpath@1.0.2 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2019-06-05T15_10_22_303Z-debug.log

经过面向搜索引擎开发，有提到用sudo，但是发现还是不行，实际原因是由于用的是root账户权限执行npm，而npm默认是不适用root权限创建内容，因此会出现权限问题而导致失败，加上参数--unsafe-perm=true --allow-root即可解决问题。

npm install --production --unsafe-perm=true --allow-root