Function getUsagesUnion

lib/internal/crypto/webcrypto_util.js:88–95

* Returns the requested usages that are present in `usagesSet`. * @param {SafeSet } usagesSet * @param {string[]} usages * @returns {SafeSet }

(usagesSet, usages)

 * @returns {SafeSet<string>}
 */
function getUsagesUnion(usagesSet, usages) {
  const newset = new SafeSet();
  for (let n = 0; n < usages.length; n++) {
    if (usagesSet.has(usages[n]))
      newset.add(usages[n]);
  }
  return newset;
}

/**
 * Splits requested usages into public and private key usage sets.