magic-action-types/index.js

Magical Action Types (for Flux, Redux, etc) Edit

/**
 * Automagically generates strings equivalent to the variables to which
   they'll be assigned, with an optional namespace prepended.

 * @param {String} namespace
 * @return {Object} Object returned has keys equivalent to the variables which
 *   will be receiving the assignments, and values equivalent to those variable
 *   names, prepended with the namespace, if provided, and joined with a slash.

 * @example
 *   const { INCREMENT, DECREMENT } = types('app/counter')
 *   INCREMENT === "app/counter/INCREMENT"
 *   DECREMENT === "app/counter/DECREMENT"

 */

function createActionTypes(namespace) {
  return new Proxy(
    {},
    {
      get: function(target, key) {
        if (typeof namespace === 'string') {
          return namespace + '/' + key;
        } else {
          return key;
        }
      }
    }
  );
}

module.exports = createActionTypes;