gistfile1.txt

const resolveData = (resolves) => (WrappedComponent) => {
  return (props) => {
    const ready = Object.keys(resolves).every((key) => {
      const resolver = resolves[key]
      const value = props[key]

      if (typeof resolver === 'function') {
        return resolver(value)
      } else if (resolver === true) {
        return !isNil(value)
      } else if (resolver === false) {
        return value === false
      } else if (resolver === null) {
        return value !== undefined
      }
    })

    if (ready) {
      return <WrappedComponent {...props}/>
    } else {
      return <span/>
    }
  }
}

export default resolveData({
  children: true,
  appStyles: (value) => !isEmpty(value)
})(ParallaxHeader)