Function isSubset

scripts/issue-labels/test.js:29–35

* Check whether every element in sub exists in sup. * * @param {string[]} sub * @param {string[]} sup * @returns {boolean}

(sub, sup)

 * @returns {boolean}
 */
function isSubset(sub, sup) {
  const set = new Set(sup || []);
  for (const x of sub || []) {
    if (!set.has(x)) return false;
  }
  return true;
}

let passed = 0;
let failed = 0;