How to integrate with Jenkins pipeline

[fezza74]

Hi all,
I made a new small Jenkins Pipeline project. Everything works fine, but I don't know how to integrate multiple-cucumber-html-reporter into jenkinsfile.

This is the file

pipeline {
    agent any
    
    tools { nodejs "node20" }
    
    stages {
        stage('Checkout') {
            steps {
                git branch: "test", url: 'https://github.com/fezza74/aisacsisco'
            }
        }
        stage('Build') {
            steps {
                sh 'npm i'
            }
        }
        stage('Pre Test'){
            steps {
                sh 'npm run pretest'
            }
        }
        stage('Test'){
            steps {
                sh 'npm run test'
            }
        }
    }
 
    post {
        failure {
                emailext(
                    subject: "${JOB_NAME}.${BUILD_NUMBER} FAILED",
                    mimeType: 'text/html',
                    to: "[email_address]",
                    body: readFile("test-results/report/index.html")
                )
            }
            success {
                emailext(
                    subject: "${JOB_NAME}.${BUILD_NUMBER} PASSED",
                    mimeType: 'text/html',
                    to: "[email_address]",
                    body: readFile("test-results/report/index.html")
                )
            }
    }
}

And this is the project structures

Where and how can I integrate the report?

Thank you very much