Stop MatrixReactionHandler reacting to itself.

src/Mjolnir.ts

@@ -183,7 +183,7 @@ export class Mjolnir {
     ) {
         this.protectedRoomsConfig = new ProtectedRoomsConfig(client);
         this.policyListManager = new PolicyListManager(this);
-        this.reactionHandler = new MatrixReactionHandler(this.managementRoomId, client);
+        this.reactionHandler = new MatrixReactionHandler(this.managementRoomId, client, clientUserId);
 
         const mutedModules = (LogService as any).mutedModules;
         if (!Array.isArray(mutedModules)) {

src/commands/interface-manager/MatrixReactionHandler.ts

@@ -29,7 +29,11 @@ export class MatrixReactionHandler extends EventEmitter {
         /**
          * A client to lookup the related events to reactions.
          */
-        private readonly client: MatrixSendClient
+        private readonly client: MatrixSendClient,
+        /**
+         * The user id of the client. Ignores reactions from this user
+         */
+        private readonly clientUserId: string
     ) {
         super();
         this.listener = this.handleEvent.bind(this);
@@ -53,6 +57,9 @@ export class MatrixReactionHandler extends EventEmitter {
         if (relatesTo['rel_type'] !== 'm.annotation') {
             return;
         }
+        if (event['sender'] === this.clientUserId) {
+            return;
+        }
         const reactionKey = relatesTo['key'];
         const relatedEventId = relatesTo['event_id'];
         if (!(typeof relatedEventId === 'string' && typeof reactionKey === 'string')) {