diff --git a/expressjs/scripts/extract-webjar.js b/expressjs/scripts/extract-webjar.js
index ec78e99..76afb0d 100644
--- a/expressjs/scripts/extract-webjar.js
+++ b/expressjs/scripts/extract-webjar.js
@@ -3,38 +3,102 @@ const fs = require('fs').promises
 const chalk = require('chalk')
 const path = require('path')
 
-const coords = {
-  group: 'com.redhat.openshift.knative.showcase',
-  artifact: 'frontend',
-  version: 'main',
+class Webjar {
+  /**
+   * Webjar stores the information about the webjar extraction.
+   * 
+   * @param {Object} vars - The variables to use.
+   * @param {string} vars.group - The group of the webjar.
+   * @param {string} vars.artifact - The artifact of the webjar.
+   * @param {string} vars.version - The version of the webjar.
+   * @param {string} vars.color - The chalk color func to use.
+   * @param {string} vars.source - The source directory in webjar to extract.
+   * @param {string} vars.target - The target directory to extract the webjar to.
+   */
+  constructor({ group, artifact, version, color, source, target }) {
+    this.group = group
+    this.artifact = artifact
+    this.version = version
+    this.color = color
+    this.source = source
+    this.target = target
+  }
 }
 
-const jarDir = `${process.env.HOME}/.m2/repository/${coords.group.replace(/\./g, '/')}/${coords.artifact}/${coords.version}`
-const jarPath = `${jarDir}/${coords.artifact}-${coords.version}.jar`
+const webjars = [
+  new Webjar({
+    group: 'com.redhat.openshift.knative.showcase',
+    artifact: 'frontend',
+    version: 'main',
+    color: chalk.cyan,
+    source: 'META-INF/resources',
+    target: 'public',
+  }),
+  new Webjar({
+    group: 'com.redhat.openshift.knative.showcase',
+    artifact: 'cloudevents-pp-wasm',
+    version: 'main',
+    color: chalk.magenta,
+    source: 'META-INF',
+    target: 'build/wasm',
+  }),
+]
+
+/**
+ * Extracts all webjars.
+ */ 
+async function extractWebjars() {
+  let ps = []
+  for (const webjar of webjars) {
+    ps.push(extractWebjar(webjar))
+  }
+  return await Promise.all(ps)
+}
+
+/**
+ * Creates a log function for the given webjar.
+ * 
+ * @param {Webjar} webjar 
+ * @returns {(message: string, ...args: any[]) => void}
+ */
+function createLog(webjar) {
+  return (...message) => {
+    console.log(`[${webjar.color(webjar.artifact)}]`, ...message)
+  }
+}
+
+/**
+ * Extracts the webjar to the target directory.
+ * 
+ * @param {Webjar} webjar 
+ */
+async function extractWebjar(webjar) {
+  const log = createLog(webjar)
+  const jarDir = `${process.env.HOME}/.m2/repository/${webjar.group.replace(/\./g, '/')}/${webjar.artifact}/${webjar.version}`
+  const jarPath = `${jarDir}/${webjar.artifact}-${webjar.version}.jar`
 
-const extractWebjar = async () => {
   const zip = new AdmZip(jarPath)
   const zipEntries = zip.getEntries()
   
-  console.log(`Extracting ${chalk.cyan(jarPath)} to ${chalk.green('public')}\n`)
-
-  console.log(`Deleting ${chalk.red('public')} directory\n`)
-  await fs.rm('public', { recursive: true, force: true })
+  log(`Deleting ${chalk.red(webjar.target)} directory\n`)
+  await fs.rm(webjar.target, { recursive: true, force: true })
+  
+  log(`Extracting ${chalk.cyan(jarPath)} to ${chalk.green(webjar.target)}\n`)
 
   zipEntries.forEach(async zipEntry => {
     // outputs zip entries information
-    if (zipEntry.entryName.startsWith('META-INF/resources') && !zipEntry.isDirectory) {
-      const targetPath = zipEntry.entryName.replace('META-INF/resources', 'public')
-      console.log(`${chalk.yellow(zipEntry.entryName)} -> ${chalk.green(targetPath)}`)
+    if (zipEntry.entryName.startsWith(webjar.source) && !zipEntry.isDirectory) {
+      const targetPath = zipEntry.entryName.replace(webjar.source, webjar.target)
+      log(`${chalk.yellow(zipEntry.entryName)} -> ${chalk.green(targetPath)}`)
 
       const targetDir = path.dirname(targetPath)
       await fs.mkdir(targetDir, { recursive: true })
       await fs.writeFile(targetPath, zipEntry.getData())
     }
   })
-  console.log(`\nExtracting the webjar is ${chalk.green('Done')}.\n`)
+  log(`\nExtracting the webjar is ${chalk.green('Done')}.\n`)
 }
 
 module.exports = () => {
-  extractWebjar()
+  extractWebjars()
 }