---

Packwrap is a framework to build modular surveys based on React components and a declarative survey format. The framework provides state management, simple integration with a REST api backend and simulated data responses.

Pack components

Pack components are the building blocks of a packwrap app. Each component returns response data that advances the survey to the next screen, or survey "module", using the push function exposed from packwrap.

Here is a simplified example of pack component that asks for a binary response, 'A' or 'B' using radio buttons:

({ name='qux', options=['A', 'B'], push }) => (
  <div>
  {
    options.map((option, i) => (
      <label
        key={i}
        onClick={() => push({ [name]: option })}
      >
        {option}
        <input type="radio" />
      </label>
    ))
  }
  </div>
)

Survey modules

We can use pack components for our survey "modules" — specific instantiations of our components that we define using a special JSON format which passes parameters as props to our components. For example we could define the following module, using a component named "Radio", that polls respondents on Donald Trump and Hillary Clinton:

{
  "component": "Radio",
  "text": "Who's better?",
  "options": [
    "Hillary Clinton",
    "Donald Trump"
  ]
}

Survey state

Packwrap maintains a single atomic state for a survey application, including survey response data, variables and an index that determines which survey module to display. Components can update the state using the push function which increments the index and loads the next module. Each module can read from the survey state using a special $ syntax.

Wrapper component

A wrapper component is a special container component to style and house a survey. It can access the survey state and display a progress bar or other useful information.

pack

The pack function is a higher-order function that takes in a pack of components and returns a special function to run different surveys use the same component pack. Putting it all together, here is how we might define and run a simple election survey:

import { pack } from 'packwrap'
import components from 'my-components'
import wrapper from 'my-wrapper'

const run = pack(components)

const initialState = {
  start: Date.now()
}

const modules = [
  {
    "component": "Markdown",
    "source": "### Instructions\nPlease be honest"
  },
  {
    "component": "Radio",
    "text": "Who's better?",
    "options": [
      "Hillary Clinton",
      "Donald Trump"
    ]
  },
  {
    "component": "Radio",
    "text": "What about Bernie?",
    "options": [
      "Love him",
      "Don't like him"
    ]
  }
]

const elementId = 'root' // id of div to mount app

run(initialState, modules, elementId, wrapper)

See a working version of this simplified example here.

Browser support

Packwrap currently targets IE10+ and evergreen browsers. Compatibility table coming soon...

Thanks to BrowserStack for providing cross-browser testing for this project. They are an excellent service for testing your surveys across many browsers and devices and support open-source projects.