cardboard()
    .data({ // implicit schema; inferred from the data
        hello: 'world',
        foo: 'bar'
    })
    .draw(document.body)

cardboard()
    .data({})
    .schema({ // explicit JSON-schema
        type: 'object',
        properties: {
            email: {
                type: 'string',
                format: 'email'
            },
        }
    })