bash: npm: command not found

Pessoal, tentei executar o npm no Git mas retornou command not found... tentei git npm start e nada...

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery
$ ls
public/  servidor/

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery
$ cd servidor

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery/servidor
$ npm start
bash: npm: command not found

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery/servidor
$ npm start
bash: npm: command not found

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery/servidor
$ git npm start
git: 'npm' is not a git command. See 'git --help'.

The most similar commands are
        am
        init
        p4
        rm

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery/servidor
$ ^C

Igor@LAPTOP-5NHA72VC MINGW64 ~/documents/logicaprogramacao/jquery/servidor
$