title: express.js - best POST json schema validator
body: <p>I'm searching for a module to validate POST json requests in my <strong>Express.js</strong> application.</p>
  
  <p>What json schema module do you use in your node.js apps?</p>
  
  <p>I assume node-validator (<a href="https://github.com/chriso/node-validator" rel="noreferrer">https://github.com/chriso/node-validator</a>) is not an option here because it works only with strings.</p>