Jenkins Shared Library error

Jenkinsfile:

@Library('shared-library@dev')_

deployPipeline {
    jenkins_job_name = "${env.JOB_BASE_NAME}"
    workspace = "${env.WORKSPACE}"
    stream = "${env.DEPLOY_CONFIG}"
	environment = "${env.ENVIRONMENT}"
}


$ cat vars/deployPipeline.groovy
def call(body) {
    def pipelineParams= [:]
    body.resolveStrategy = Closure.DELEGATE_FIRST
    body.delegate = pipelineParams
    body()

    pipeline {
        stages {
            stage ('Info') {
        		steps {
    				echo "Job Name: ${pipelineParams.jenkins-job-name}"
                    echo "Workspace: ${pipelineParams.workspace}"
                    echo "Stream: ${pipelineParams.stream}"
                    echo "Environment: ${pipelineParams.environment}"
                }
    		}
		}
	}
}


Error:
java.lang.NullPointerException: Cannot get property 'JOB_BASE_NAME' on null object