Angular - Getting sh: ng: command not found while running "npm run ng build" in Jenkins

Question

I am trying to build an angular project in Jenkins

Tried both

"build": "npm run ng build",

as well as

"build": "ng build"

but getting the same error. Could it be because of the way this project has been set up in jenkins ?

On my local machine, setting

"build": "npm run ng build"

works fine. But it fails on jenkins.

Jenkins log below -

12:54:27 > ******* build /home/jenkins/workspace/********
12:54:27 > npm run ng build
12:54:27 
12:54:27 
12:54:27 > ******* ng /home/jenkins/workspace/**********
12:54:27 > ng "build"
12:54:27 
12:54:27 sh: ng: command not found
12:54:27 npm ERR! code ELIFECYCLE
12:54:27 npm ERR! syscall spawn
12:54:27 npm ERR! file sh
12:54:27 npm ERR! errno ENOENT
12:54:27 npm ERR! ******* ng: `ng "build"`
12:54:27 npm ERR! spawn ENOENT
12:54:27 npm ERR! 
12:54:27 npm ERR! Failed at the ******** ng script.
12:54:27 npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
12:54:27 npm WARN Local package.json exists, but node_modules missing, did you mean to install?
12:54:27 
12:54:27 npm ERR! A complete log of this run can be found in:
12:54:27 npm ERR!     /home/jenkins/.npm/_logs/2020-09-09T18_54_22_494Z-debug.log
12:54:27 npm ERR! code ELIFECYCLE
12:54:27 npm ERR! errno 1
12:54:27 npm ERR! ******* build: `npm run ng build`
12:54:27 npm ERR! Exit status 1
12:54:27 npm ERR! 
12:54:27 npm ERR! Failed at the ******** build script.
12:54:27 npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
12:54:27 npm WARN Local package.json exists, but node_modules missing, did you mean to install?
12:54:27 
12:54:27 npm ERR! A complete log of this run can be found in:
12:54:27 npm ERR!     /home/jenkins/.npm/_logs/2020-09-09T18_54_22_527Z-debug.log
12:54:27 /tmp/jenkins4346657790254352101.sh: line 12: cd: 
/var/lib/jenkins/workspace/********/dist: No such file or directory
12:54:27 cp: cannot stat 
‘/var/lib/jenkins/workspace/******/dist/********’: No such file or directory
12:54:27 Build step 'Execute shell' marked build as failure
12:54:27 New run name is 'CZ BLD# 254796'
12:54:27 Notifying upstream projects of job completion
12:54:27 Finished: FAILURE

Answer 1

in pipeline add below, i hope this will solve the problem, i was facing the same issue while using jenkins pipeline to build my react application.

pipeline{
environment { 
        CI = 'false'
    }
#your complete pipeline stages and steps for npm and other commands

}