js: throw errors in sync functions

--

* synchronous functions should throw errors if something goes wrong,
  Promises should reject. This commit changes some error cases that
  returned Error objects instead of throwing them

  - src/Key.js: createKey() and sync Key.get() throw errors
  - src/Error.js: Exporting the list of errors to be able to test and
    compare against these strings
  - src/Keyring.js: Setting a null value in pattern is not useful, and
    now caused an error with the new changes.
  - src/Message.js: createMessage and Message.setParameter now throw
    errors

1 files changed, 3 insertions, 1 deletions

diff --git a/lang/js/src/Keyring.js b/lang/js/src/Keyring.js
index ab0144ef..cb053ba1 100644
--- a/lang/js/src/Keyring.js
+++ b/lang/js/src/Keyring.js
@@ -67,7 +67,9 @@ export class GPGME_Keyring {
                     if (prepare_sync === true) {
                         secondrequest = function () {
                             let msg2 = createMessage('keylist');
-                            msg2.setParameter('keys', pattern);
+                            if (pattern){
+                                msg2.setParameter('keys', pattern);
+                            }
                             msg2.setParameter('secret', true);
                             return msg2.post();
                         };