chore: add 'canHandle' method to 'Star'

src/reactions/github/star.ts

@@ -1,6 +1,14 @@
-import { Reaction, ReactionHandleOptions } from './reaction';
+import {
+	Reaction,
+	ReactionCanHandleOptions,
+	ReactionHandleOptions,
+} from './reaction';
 
 export class Star extends Reaction {
+	canHandle({ payload, event }: ReactionCanHandleOptions): boolean {
+		return event === 'star' && payload.action === 'created';
+	}
+
 	getStreamLabsMessage({ payload }: ReactionHandleOptions): string {
 		return `*${payload.sender.login}* just starred *${payload.repository.full_name}*`;
 	}

test/reactions/github/star.spec.ts

@@ -81,4 +81,28 @@ describe('Star', () => {
 			});
 		});
 	});
+
+	describe('#canHandle', () => {
+		it('returns true if the event is star and actions is created', () => {
+			const subject = new Star(null as any, null as any);
+
+			const result = subject.canHandle({
+				event: 'star',
+				payload: { action: 'created' },
+			});
+
+			expect(result).toEqual(true);
+		});
+
+		it('returns false if the event is star and actions is removed', () => {
+			const subject = new Star(null as any, null as any);
+
+			const result = subject.canHandle({
+				event: 'star',
+				payload: { action: 'removed' },
+			});
+
+			expect(result).toEqual(false);
+		});
+	});
 });