I had the same issue,the reason for it was npm package manager was not installed while installing node. This was caused because of the following mistake: In the installation process there is a step called "Custom Setup", here you have the option to choose one of the following: 1) Node.js runtime (This is selected by default). 2) npm package manager 3) Online documentation shortcuts. 4) Add to Path. If you proceed as it is npm package manager will not be installed and hence you will get the error.

解决方案: 当你得到这些选项时，选择npm包管理器。 这对我很管用。

所以，对于那些使用:

NVM和自制

请务必设置节点版本号。对我来说，我的节点版本已不再设置。所以，我检查了我使用的版本

nvm劳拉·舒尔茨

这列出了v16.13.1，所以我设置它使用这个

NVM使用16

一旦我的节点版本设置好，NPM命令又可以工作了

I had the same issue,the reason for it was npm package manager was not installed while installing node. This was caused because of the following mistake: In the installation process there is a step called "Custom Setup", here you have the option to choose one of the following: 1) Node.js runtime (This is selected by default). 2) npm package manager 3) Online documentation shortcuts. 4) Add to Path. If you proceed as it is npm package manager will not be installed and hence you will get the error.

解决方案: 当你得到这些选项时，选择npm包管理器。 这对我很管用。

对于CentOS用户，这适用于我:

sudo yum install npm

我的解决方案是:

sudo -E env "PATH=$PATH" n stable

对我来说没问题。

在这里找到它:https://stackoverflow.com/a/29400598/861615

这是因为您更改了默认的全局包目录

为了在sudo权限下全局安装npm包，/usr/bin/npm应该是可用的。如果npm存在于其他目录，创建一个像这样的软链接:

sudo ln -s /usr/local/bin/npm /usr/bin/npm

它适用于Fedora 25、node8.0.0和npm5.0.0