fix(worker): change active event typing

src/classes/worker.ts

@@ -18,10 +18,7 @@ import { isRedisInstance, delay } from '../utils';
 export const clientCommandMessageReg = /ERR unknown command ['`]\s*client\s*['`]/;
 
 export declare interface Worker {
-  on(
-    event: 'active',
-    listener: (job: Job, result: null, prev: string) => void,
-  ): this;
+  on(event: 'active', listener: (job: Job, prev: string) => void): this;
   on(event: 'completed', listener: (job: Job) => void): this;
   on(event: 'drained', listener: () => void): this;
   on(event: 'error', listener: (failedReason: Error) => void): this;
@@ -349,8 +346,7 @@ export class Worker<
       }
     };
 
-    // TODO: how to cancel the processing? (null -> job.cancel() => throw CancelError()void)
-    this.emit('active', job, null, 'waiting');
+    this.emit('active', job, 'waiting');
 
     lockExtender();
     try {

src/test/test_sandboxed_process.ts

@@ -352,8 +352,7 @@ describe('sandboxed process', () => {
 
     // await this After we've added the job
     const onJobActive = new Promise<void>(resolve => {
-      worker.on('active', (job, result, prev) => {
-        expect(result).to.be.null;
+      worker.on('active', (job, prev) => {
         expect(prev).to.be.equal('waiting');
         resolve();
       });