npm not running 'run watch' command - issue with bash

[adriangreenland]

Hi

not very experienced with the terminal but after installing parcel i cant seem to run npm for some reason...

I see the error below:

sh: parcel: command not found
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! personalportfolio@1.0.0 watch: parcel src/index.html
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the personalportfolio@1.0.0 watch 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! /Users/Greenland/.npm/_logs/2018-07-04T21_55_49_538Z-debug.log
Adrians-MBP:PersonalPortfolio Greenland$ parcel src/index.html
bash: parcel: command not found

also after installing parcel and running 'parcel src/index.html' i get the error 'bash: parcel: command not found'

any assistance welcomed

thanks
adrian