Function compare

index.js:246–288

(password, hashValue, callback, progressCallback)

 * @throws {Error} If `callback` is present but not a function
 */
export function compare(password, hashValue, callback, progressCallback) {
  function _async(callback) {
    if (typeof password !== "string" || typeof hashValue !== "string") {
      nextTick(
        callback.bind(
          this,
          Error(
            "Illegal arguments: " + typeof password + ", " + typeof hashValue,
          ),
        ),
      );
      return;
    }
    if (hashValue.length !== 60) {
      nextTick(callback.bind(this, null, false));
      return;
    }
    hash(
      password,
      hashValue.substring(0, 29),
      function (err, comp) {
        if (err) callback(err);
        else callback(null, safeStringCompare(comp, hashValue));
      },
      progressCallback,
    );
  }

  if (callback) {
    if (typeof callback !== "function")
      throw Error("Illegal callback: " + typeof callback);
    _async(callback);
  } else
    return new Promise(function (resolve, reject) {
      _async(function (err, res) {
        if (err) {
          reject(err);
          return;
        }
        resolve(res);
      });
    });
}

/**
 * Gets the number of rounds used to encrypt the specified hash.