When "npm" installs dependencies, an error occurs: Error: EACCES: permission denied

background

Running environment : CentOS Linux release 7.5.1804
node version : v16.19.0
Runtime execution : npm install
error is as follows :

 vue-demi@0.13.11 postinstall /root/h-management-prototype/node_modules/@nuxtjs/i18n/node_modules/vue-demi
 node ./scripts/postinstall.js

node:internal/fs/utils:347
    throw err;
    ^

Error: EACCES: permission denied, open '/root/h-management-prototype/node_modules/@nuxtjs/i18n/node_modules/vue-demi/lib/index.cjs'
    at Object.openSync (node:fs:590:3)
    at Object.writeFileSync (node:fs:2202:35)
    at copy (/root/h-management-prototype/node_modules/@nuxtjs/i18n/node_modules/vue-demi/scripts/utils.js:24:6)
    at switchVersion (/root/h-management-prototype/node_modules/@nuxtjs/i18n/node_modules/vue-demi/scripts/utils.js:52:3)
    at Object.<anonymous> (/root/h-management-prototype/node_modules/@nuxtjs/i18n/node_modules/vue-demi/scripts/postinstall.js:15:3)
    at Module._compile (node:internal/modules/cjs/loader:1165:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1219:10)
    at Module.load (node:internal/modules/cjs/loader:1043:32)
    at Function.Module._load (node:internal/modules/cjs/loader:878:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12) {
    
    
  errno: -13,
  syscall: 'open',
  code: 'EACCES',
  path: '/root/h-management-prototype/node_modules/@nuxtjs/i18n/node_modules/vue-demi/lib/index.cjs'
}

Reason for error

In Linux systems, the root user does not automatically obtain the installation permission for npm packages and needs to manually set permissions.

Solution

--unsafe-perm=trueThis problem can be solved by adding the parameter when executing the npm command . This parameter will tell npm not to check permissions during the installation of the package, and execute it directly as the root user.

npm i --unsafe-perm=true

Notice

Using --unsafe-perm=truethe parameter will cause npm to execute as the root user, which may cause potential security risks to the system. Therefore, it is recommended to use this parameter only when necessary.