The typeof validator

property-type-validator.js

var myAwesomeSchema = {
  hello: 'string',
  world: {
    thing: 'number',
    lol: 'boolean'
  },
    another: [
        { a: 'number', b: 'number' },
        { c: 'number', d: 'number' }
    ]
}
var goodDoc = {
    hello: 'very yes',
    world: {
        thing: 37,
        lol: true
    },
    another: [
        { a: 209, b: 3 },
        { c: 94, d: 46 }
    ]
}
var badDoc = {
    hello: 'very yes',
    world: {
        thing: 37,
        lol: 'not boolean haha'
    }
}
 
function validator(schema, document) {
  return Object.keys(schema).every(function (key) {
    return (typeof schema[key] === 'object') ?
      validator(schema[key], document[key]) :
      schema[key] === typeof document[key]
  })
}
 
document.write(validator(myAwesomeSchema, goodDoc)) // => true
document.write(validator(myAwesomeSchema, badDoc)) // => false

var myAwesomeSchema = {
  hello: 'string',
  world: {
    things: 'function',
    stuff: 'number'
  }
}

https://jsfiddle.net/cq4coshq/