chore: add Jenkinsfile for Javascript implementation

js/Jenkinsfile

@@ -0,0 +1,56 @@
+#!/usr/bin/env groovy
+
+node('rhel8') {
+    stage('Checkout repo') {
+        deleteDir()
+        git url: "https://github.com/${params.FORK}/alizer.git", branch: params.BRANCH
+    }
+
+    stage('Install requirements') {
+        def nodeHome = tool 'nodejs-12.13.1'
+        env.PATH = "${nodeHome}/bin:${env.PATH}"
+    }
+
+    dir('js') {
+        stage('Build') {
+            sh "npm install"
+            sh "npm run compile"
+        }
+
+        stage('Test') {
+            sh "npm run test"
+        }
+
+        def packageJson = readJSON file: 'package.json'
+
+        stage('Package') {
+            sh "npm pack"
+            def packs = findFiles(glob: '**.tgz')
+            def packName = "redhat-developer-alizer-${packageJson.version}-${env.BUILD_NUMBER}.tgz"
+            sh "mv ${packs[0].name} ${packName}"
+            sh "ln -s ${packName} redhat-developer-alizer-latest.tgz"
+        }
+
+        if (params.UPLOAD_LOCATION) {
+            stage('Snapshot') {
+                def filesToPush = findFiles(glob: '**.tgz')
+                for (i = 0; i < filesToPush.length; i++) {
+                    sh "rsync -Pzrlt --rsh=ssh --protocol=28 ${filesToPush[i].path} ${UPLOAD_LOCATION}/snapshots/alizer/"
+                }
+            }
+        }
+
+        if (publish.equals('true')) {
+            stage('Publish to NPM') {
+                withCredentials([[$class: 'StringBinding', credentialsId: 'npm-token', variable: 'TOKEN']]) {
+                    sh "echo registry=https://registry.npmjs.com > .npmrc"
+                    sh "echo //registry.npmjs.com/:_authToken=${TOKEN} >> .npmrc"
+                    sh "npm publish"
+                }
+                currentBuild.keepLog = true
+                currentBuild.description = "${packageJson.version}.${env.BUILD_NUMBER}"
+            }
+        }
+	}
+
+}