message: Clean up the type
diff: @@ -22,6 +22,11 @@ const _algo = 'aes-256-gcm';
  const KEY_NAME = 'sfdx';
  const ACCOUNT = 'local';
  +interface CredType {
  + username: string;
  + password: string;
  +}
  +
  /**
  * osxKeyChain promise wrapper.
  * @type {{get: KeychainPromises.get, set: KeychainPromises.set}}
  @@ -33,7 +38,7 @@ const keychainPromises = {
  * @param service The keychain service name.
  * @param account The keychain account name.
  */
  - getPassword(_keychain, service, account): Promise<{username: string, password: string}> {
  + getPassword(_keychain, service, account): Promise<CredType> {
  return new Promise((resolve, reject) =>
  _keychain.getPassword({ service, account }, (err, password) => {
  if (err) {
  @@ -50,7 +55,7 @@ const keychainPromises = {
  * @param account The keychain account name.
  * @param password The password for the keychain item.
  */
  - setPassword(_keychain, service, account, password) {
  + setPassword(_keychain, service, account, password): Promise<CredType> {
  return new Promise( (resolve, reject) =>
  _keychain.setPassword({ service, account, password }, (err) => {
  if (err) {
  