vaScript, which means that there is no
explicit compilation step. Instead, they use <a href=https://en.wikipedia.org/wiki/Just-in-time_compilation>just-in-time compilation</a>. To build a Node.js application, then means to install its dependencies. Install
the dependencies of the <code>ratings</code> service in the same folder where you
stored the service code and the package file:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ npm install
npm notice created a lockfile as package-