src/collectors/number/Values.js

import Collector from '../Collector';

/**
 * A collector that captures `values`
 *   - This is an array of all the values collected.
 */
export default class Values extends Collector {
  constructor() {
    super('values', []);
  }
  handleProcess(state, prev, val) {
    const result = prev.slice(0);
    result.push(val);
    return result;
  }
}