| 285 | } |
| 286 | |
| 287 | public async completed(allowResolvingImmediately: boolean = false) { |
| 288 | const settlementPromise = this.settled(allowResolvingImmediately) |
| 289 | |
| 290 | const earlyExitPromise = new Promise<Error[]>((resolve, reject) => { |
| 291 | const subscription = this.eventObservable.subscribe({ |
| 292 | next(event) { |
| 293 | if (event.type === PoolEventType.taskQueueDrained) { |
| 294 | subscription.unsubscribe() |
| 295 | resolve(settlementPromise) |
| 296 | } else if (event.type === PoolEventType.taskFailed) { |
| 297 | subscription.unsubscribe() |
| 298 | reject(event.error) |
| 299 | } |
| 300 | }, |
| 301 | error: reject // make a pool-wide error reject the completed() result promise |
| 302 | }) |
| 303 | }) |
| 304 | |
| 305 | const errors = await Promise.race([ |
| 306 | settlementPromise, |
| 307 | earlyExitPromise |
| 308 | ]) |
| 309 | |
| 310 | if (errors.length > 0) { |
| 311 | throw errors[0] |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | public events() { |
| 316 | return this.eventObservable |