> angular2-demo@1.0.0 start C:\Users\admin\Desktop\angular\angular2-demo-master

> webpack-dev-server --inline --colors --progress --port 3000

'webpack-dev-server' is not recognized as an internal or external command,

operable program or batch file.

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! angular2-demo@1.0.0 start: `webpack-dev-server --inline --colors --progress --port 3000`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the angular2-demo@1.0.0 start script.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! A complete log of this run can be found in:

npm ERR!     C:\Users\admin\AppData\Roaming\npm-cache\_logs\2019-04-27T16_55_14_060Z-debug.log