如何通过 http 执行 jsonschemavalidation

我已经定义了一个restservice，并尝试用文书工作进行jsonschema验证：

var _ = require('underscore');
var validate = require('isvalid-express');
var paperwork=require('paperwork');
module.exports = function (app) {
    app.post('/myroute', paperwork({
        username: /[a-z0-9]+/,
        password: String,
        age: Number,
        interests: [String],
        jobs: [{
            company: String,
            role: String
        }]
    }, function (req, res) {
        // ...
    }));

};

这是我在邮递员中将其发布到myroute的请求：

{
  username: 'brucewayne',
  password: 'iambatman',
  age: 36,
  interests: ['Climbing', 'CQC', 'Cosplay'],
  jobs: [{
    company: 'Wayne Inc.',
    role: 'CEO'
  }]
}

但是，它会抛出一个错误：

TypeError: undefined is not a function
    at module.exports (c:'heroku'newher'node_codechallenge'node_modules'paperwork'paperwork.js:129:5)
    at module.exports (c:'heroku'newher'node_codechallenge'app'testroutes.js:12:26)
    at Object.<anonymous> (c:'heroku'newher'node_codechallenge'test.js:16:31)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.runMain [as _onTimeout] (module.js:497:10)
    at Timer.listOnTimeout [as ontimeout] (timers.js:112:15)

在node.js中对http进行json模式验证的最佳方法是什么？