我无法在全球范围内安装Angular。我在下面列出了错误。

C:\Users\DevSa\ng -> C:\Users\DevSa\node_modules\@angular\cli\bin\ng

> @angular/cli@8.3.19 postinstall C:\Users\DevSa\node_modules\@angular\cli
> node ./bin/postinstall/script.js

'node' is not recognized as an internal or external command,operable program or batch file.
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @angular/cli@8.3.19 postinstall: `node ./bin/postinstall/script.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the @angular/cli@8.3.19 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!     C:\Users\DevSa\AppData\Roaming\npm-cache\_logs\2019-11-26T21_34_00_712Z-debug.log