@nullvoxpopuli/ember-composable-helpers/dist/helpers/intersect.js

Composable helpers for Ember

import { helper } from '@ember/component/helper';
import { isArray } from '@ember/array';
import asArray from '../utils/as-array.js';

function intersect([...arrays]) {
  const confirmedArrays = asArray(arrays).map(array => {
    return isArray(array) ? array : [];
  });
  // copied from https://github.com/emberjs/ember.js/blob/315ec6472ff542ac714432036cc96fe4bd62bd1f/packages/%40ember/object/lib/computed/reduce_computed_macros.js#L1063-L1100
  const results = confirmedArrays.pop().filter(candidate => {
    for (let i = 0; i < confirmedArrays.length; i++) {
      let found = false;
      const array = confirmedArrays[i];
      for (let j = 0; j < array.length; j++) {
        if (array[j] === candidate) {
          found = true;
          break;
        }
      }
      if (found === false) {
        return false;
      }
    }
    return true;
  });
  return results;
}
var intersect$1 = helper(intersect);

export { intersect$1 as default, intersect };
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