purpose

This utility was created to help me to verify my React component props in the situation where either one or the other of two props are expected (or required.)

example

In this contrived example we can use 1-2 of 4 params

We require either a Northerly or Southerly amount, and would use either of an Easterly or Westerly amount if available

import { EitherOptional, EitherRequired } from 'react-either-property';

function ComponentSeven({ north, south, east, west }) {
  [component code here]
}

ComponentSeven.propTypes = {
  east: PropTypes.number,
  west: PropTypes.number,
  north: PropTypes.number,
  south: PropTypes.number,
  ignored: EitherOptional('north', 'south'),
  undefined: EitherRequired('north', 'south'),
};

Note: this code uses the React Props' systems custom validator -- the supplied props names are ignored, Reat behavior when those names match passed props is undefined

installation

npm install react-either-property

testing

you can call the internal test() function which will console it's results