Function isArrayIndex

lib/internal/modules/esm/resolve.js:463–467

* Checks if the given key is a valid array index. * @param {string} key - The key to check. * @returns {boolean} - Returns `true` if the key is a valid array index, else `false`.

(key)

 * @returns {boolean} - Returns `true` if the key is a valid array index, else `false`.
 */
function isArrayIndex(key) {
  const keyNum = +key;
  if (`${keyNum}` !== key) { return false; }
  return keyNum >= 0 && keyNum < 0xFFFF_FFFF;
}

/**
 * Resolves the target of a package based on the provided parameters.