build(deps-dev): apply updates
[poolifier.git] / src / worker / abstract-worker.ts
CommitLineData
6677a3d3 1import type { Worker } from 'node:cluster'
d715b7bc 2import { performance } from 'node:perf_hooks'
ded253e2
JB
3import type { MessagePort } from 'node:worker_threads'
4
d715b7bc
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5import type {
6 MessageValue,
5c4d16da 7 Task,
d715b7bc
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8 TaskPerformance,
9 WorkerStatistics
d35e5717 10} from '../utility-types.js'
ff128cc9
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11import {
12 DEFAULT_TASK_NAME,
13 EMPTY_FUNCTION,
14 isAsyncFunction,
15 isPlainObject
d35e5717 16} from '../utils.js'
b6b32453 17import type {
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JB
18 TaskAsyncFunction,
19 TaskFunction,
4e38fd21 20 TaskFunctionOperationResult,
b6b32453 21 TaskFunctions,
82ea6492 22 TaskSyncFunction
d35e5717 23} from './task-functions.js'
9a38f99e
JB
24import {
25 checkTaskFunctionName,
26 checkValidTaskFunctionEntry,
27 checkValidWorkerOptions
d35e5717 28} from './utils.js'
ded253e2 29import { KillBehaviors, type WorkerOptions } from './worker-options.js'
4c35177b 30
978aad6f 31const DEFAULT_MAX_INACTIVE_TIME = 60000
d38d0e30
JB
32const DEFAULT_WORKER_OPTIONS: WorkerOptions = {
33 /**
34 * The kill behavior option on this worker or its default value.
35 */
36 killBehavior: KillBehaviors.SOFT,
37 /**
38 * The maximum time to keep this worker active while idle.
39 * The pool automatically checks and terminates this worker when the time expires.
40 */
41 maxInactiveTime: DEFAULT_MAX_INACTIVE_TIME,
42 /**
43 * The function to call when the worker is killed.
44 */
45 killHandler: EMPTY_FUNCTION
46}
c97c7edb 47
729c563d 48/**
ea7a90d3 49 * Base class that implements some shared logic for all poolifier workers.
729c563d 50 *
38e795c1 51 * @typeParam MainWorker - Type of main worker.
e102732c
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52 * @typeParam Data - Type of data this worker receives from pool's execution. This can only be structured-cloneable data.
53 * @typeParam Response - Type of response the worker sends back to the main worker. This can only be structured-cloneable data.
729c563d 54 */
c97c7edb 55export abstract class AbstractWorker<
6677a3d3 56 MainWorker extends Worker | MessagePort,
d3c8a1a8
S
57 Data = unknown,
58 Response = unknown
69b70a7e 59> {
f59e1027 60 /**
83fa0a36 61 * Worker id.
f59e1027
JB
62 */
63 protected abstract id: number
a86b6df1
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64 /**
65 * Task function(s) processed by the worker when the pool's `execution` function is invoked.
66 */
82ea6492 67 protected taskFunctions!: Map<string, TaskFunction<Data, Response>>
729c563d
S
68 /**
69 * Timestamp of the last task processed by this worker.
70 */
a9d9ea34 71 protected lastTaskTimestamp!: number
b6b32453 72 /**
8a970421 73 * Performance statistics computation requirements.
b6b32453 74 */
c63a35a0 75 protected statistics?: WorkerStatistics
729c563d 76 /**
b0a4db63 77 * Handler id of the `activeInterval` worker activity check.
729c563d 78 */
b0a4db63 79 protected activeInterval?: NodeJS.Timeout
49890030 80
c97c7edb 81 /**
729c563d 82 * Constructs a new poolifier worker.
c97c7edb 83 *
38e795c1 84 * @param isMain - Whether this is the main worker or not.
38e795c1 85 * @param mainWorker - Reference to main worker.
85aeb3f3 86 * @param taskFunctions - Task function(s) processed by the worker when the pool's `execution` function is invoked. The first function is the default function.
38e795c1 87 * @param opts - Options for the worker.
c97c7edb
S
88 */
89 public constructor (
c63a35a0
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90 protected readonly isMain: boolean | undefined,
91 private readonly mainWorker: MainWorker | undefined | null,
82ea6492 92 taskFunctions: TaskFunction<Data, Response> | TaskFunctions<Data, Response>,
d38d0e30 93 protected opts: WorkerOptions = DEFAULT_WORKER_OPTIONS
c97c7edb 94 ) {
9d2d0da1
JB
95 if (this.isMain == null) {
96 throw new Error('isMain parameter is mandatory')
97 }
a86b6df1 98 this.checkTaskFunctions(taskFunctions)
9d2d0da1 99 this.checkWorkerOptions(this.opts)
1f68cede 100 if (!this.isMain) {
0cb6edc2 101 // Should be once() but Node.js on windows has a bug that prevents it from working
e2898b4f 102 this.getMainWorker().on('message', this.handleReadyMessage.bind(this))
c97c7edb
S
103 }
104 }
105
41aa7dcd 106 private checkWorkerOptions (opts: WorkerOptions): void {
9a38f99e 107 checkValidWorkerOptions(opts)
d38d0e30 108 this.opts = { ...DEFAULT_WORKER_OPTIONS, ...opts }
41aa7dcd
JB
109 }
110
111 /**
c20084b6 112 * Checks if the `taskFunctions` parameter is passed to the constructor and valid.
41aa7dcd 113 *
82888165 114 * @param taskFunctions - The task function(s) parameter that should be checked.
41aa7dcd 115 */
a86b6df1 116 private checkTaskFunctions (
c63a35a0
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117 taskFunctions:
118 | TaskFunction<Data, Response>
119 | TaskFunctions<Data, Response>
120 | undefined
a86b6df1 121 ): void {
ec8fd331
JB
122 if (taskFunctions == null) {
123 throw new Error('taskFunctions parameter is mandatory')
124 }
82ea6492 125 this.taskFunctions = new Map<string, TaskFunction<Data, Response>>()
0d80593b 126 if (typeof taskFunctions === 'function') {
2a69b8c5
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127 const boundFn = taskFunctions.bind(this)
128 this.taskFunctions.set(DEFAULT_TASK_NAME, boundFn)
129 this.taskFunctions.set(
130 typeof taskFunctions.name === 'string' &&
efebef40 131 taskFunctions.name.trim().length > 0
2a69b8c5
JB
132 ? taskFunctions.name
133 : 'fn1',
134 boundFn
135 )
0d80593b 136 } else if (isPlainObject(taskFunctions)) {
82888165 137 let firstEntry = true
a86b6df1 138 for (const [name, fn] of Object.entries(taskFunctions)) {
9a38f99e 139 checkValidTaskFunctionEntry<Data, Response>(name, fn)
2a69b8c5 140 const boundFn = fn.bind(this)
82888165 141 if (firstEntry) {
2a69b8c5 142 this.taskFunctions.set(DEFAULT_TASK_NAME, boundFn)
82888165
JB
143 firstEntry = false
144 }
c50b93fb 145 this.taskFunctions.set(name, boundFn)
a86b6df1 146 }
630f0acf
JB
147 if (firstEntry) {
148 throw new Error('taskFunctions parameter object is empty')
149 }
a86b6df1 150 } else {
f34fdabe
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151 throw new TypeError(
152 'taskFunctions parameter is not a function or a plain object'
153 )
41aa7dcd
JB
154 }
155 }
156
968a2e8c
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157 /**
158 * Checks if the worker has a task function with the given name.
159 *
160 * @param name - The name of the task function to check.
161 * @returns Whether the worker has a task function with the given name or not.
968a2e8c 162 */
4e38fd21 163 public hasTaskFunction (name: string): TaskFunctionOperationResult {
6703b9f4 164 try {
9a38f99e 165 checkTaskFunctionName(name)
6703b9f4
JB
166 } catch (error) {
167 return { status: false, error: error as Error }
168 }
169 return { status: this.taskFunctions.has(name) }
968a2e8c
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170 }
171
172 /**
173 * Adds a task function to the worker.
174 * If a task function with the same name already exists, it is replaced.
175 *
176 * @param name - The name of the task function to add.
177 * @param fn - The task function to add.
178 * @returns Whether the task function was added or not.
968a2e8c
JB
179 */
180 public addTaskFunction (
181 name: string,
82ea6492 182 fn: TaskFunction<Data, Response>
4e38fd21 183 ): TaskFunctionOperationResult {
968a2e8c 184 try {
9a38f99e 185 checkTaskFunctionName(name)
6703b9f4
JB
186 if (name === DEFAULT_TASK_NAME) {
187 throw new Error(
188 'Cannot add a task function with the default reserved name'
189 )
190 }
191 if (typeof fn !== 'function') {
192 throw new TypeError('fn parameter is not a function')
193 }
646d040a 194 const boundFn = fn.bind(this)
968a2e8c
JB
195 if (
196 this.taskFunctions.get(name) ===
197 this.taskFunctions.get(DEFAULT_TASK_NAME)
198 ) {
2a69b8c5 199 this.taskFunctions.set(DEFAULT_TASK_NAME, boundFn)
968a2e8c 200 }
2a69b8c5 201 this.taskFunctions.set(name, boundFn)
e81c38f2 202 this.sendTaskFunctionNamesToMainWorker()
6703b9f4
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203 return { status: true }
204 } catch (error) {
205 return { status: false, error: error as Error }
968a2e8c
JB
206 }
207 }
208
209 /**
210 * Removes a task function from the worker.
211 *
212 * @param name - The name of the task function to remove.
213 * @returns Whether the task function existed and was removed or not.
968a2e8c 214 */
4e38fd21 215 public removeTaskFunction (name: string): TaskFunctionOperationResult {
6703b9f4 216 try {
9a38f99e 217 checkTaskFunctionName(name)
6703b9f4
JB
218 if (name === DEFAULT_TASK_NAME) {
219 throw new Error(
220 'Cannot remove the task function with the default reserved name'
221 )
222 }
223 if (
224 this.taskFunctions.get(name) ===
225 this.taskFunctions.get(DEFAULT_TASK_NAME)
226 ) {
227 throw new Error(
228 'Cannot remove the task function used as the default task function'
229 )
230 }
231 const deleteStatus = this.taskFunctions.delete(name)
e81c38f2 232 this.sendTaskFunctionNamesToMainWorker()
6703b9f4
JB
233 return { status: deleteStatus }
234 } catch (error) {
235 return { status: false, error: error as Error }
968a2e8c 236 }
968a2e8c
JB
237 }
238
239 /**
c50b93fb
JB
240 * Lists the names of the worker's task functions.
241 *
242 * @returns The names of the worker's task functions.
243 */
6703b9f4 244 public listTaskFunctionNames (): string[] {
d8a4de75
JB
245 const names = [...this.taskFunctions.keys()]
246 let defaultTaskFunctionName = DEFAULT_TASK_NAME
b558f6b5
JB
247 for (const [name, fn] of this.taskFunctions) {
248 if (
249 name !== DEFAULT_TASK_NAME &&
250 fn === this.taskFunctions.get(DEFAULT_TASK_NAME)
251 ) {
252 defaultTaskFunctionName = name
253 break
254 }
255 }
256 return [
257 names[names.indexOf(DEFAULT_TASK_NAME)],
258 defaultTaskFunctionName,
259 ...names.filter(
041dc05b 260 name => name !== DEFAULT_TASK_NAME && name !== defaultTaskFunctionName
b558f6b5
JB
261 )
262 ]
c50b93fb
JB
263 }
264
265 /**
266 * Sets the default task function to use in the worker.
968a2e8c
JB
267 *
268 * @param name - The name of the task function to use as default task function.
269 * @returns Whether the default task function was set or not.
968a2e8c 270 */
4e38fd21 271 public setDefaultTaskFunction (name: string): TaskFunctionOperationResult {
968a2e8c 272 try {
9a38f99e 273 checkTaskFunctionName(name)
6703b9f4
JB
274 if (name === DEFAULT_TASK_NAME) {
275 throw new Error(
276 'Cannot set the default task function reserved name as the default task function'
277 )
278 }
279 if (!this.taskFunctions.has(name)) {
280 throw new Error(
281 'Cannot set the default task function to a non-existing task function'
282 )
283 }
67f3f2d6
JB
284 // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
285 this.taskFunctions.set(DEFAULT_TASK_NAME, this.taskFunctions.get(name)!)
9eae3c69 286 this.sendTaskFunctionNamesToMainWorker()
6703b9f4
JB
287 return { status: true }
288 } catch (error) {
289 return { status: false, error: error as Error }
968a2e8c
JB
290 }
291 }
292
a038b517
JB
293 /**
294 * Handles the ready message sent by the main worker.
295 *
296 * @param message - The ready message.
297 */
298 protected abstract handleReadyMessage (message: MessageValue<Data>): void
299
aee46736
JB
300 /**
301 * Worker message listener.
302 *
6b813701 303 * @param message - The received message.
aee46736 304 */
85aeb3f3 305 protected messageListener (message: MessageValue<Data>): void {
9e746eec 306 this.checkMessageWorkerId(message)
310de0aa
JB
307 if (message.statistics != null) {
308 // Statistics message received
309 this.statistics = message.statistics
310 } else if (message.checkActive != null) {
311 // Check active message received
312 message.checkActive ? this.startCheckActive() : this.stopCheckActive()
6703b9f4
JB
313 } else if (message.taskFunctionOperation != null) {
314 // Task function operation message received
315 this.handleTaskFunctionOperationMessage(message)
310de0aa
JB
316 } else if (message.taskId != null && message.data != null) {
317 // Task message received
318 this.run(message)
319 } else if (message.kill === true) {
320 // Kill message received
321 this.handleKillMessage(message)
cf597bc5
JB
322 }
323 }
324
6703b9f4
JB
325 protected handleTaskFunctionOperationMessage (
326 message: MessageValue<Data>
327 ): void {
9eae3c69 328 const { taskFunctionOperation, taskFunctionName, taskFunction } = message
7f0e1334
JB
329 if (taskFunctionName == null) {
330 throw new Error(
331 'Cannot handle task function operation message without a task function name'
332 )
333 }
334 let response: TaskFunctionOperationResult
d2dd5ef5
JB
335 switch (taskFunctionOperation) {
336 case 'add':
337 response = this.addTaskFunction(
7f0e1334
JB
338 taskFunctionName,
339 // eslint-disable-next-line @typescript-eslint/no-implied-eval, no-new-func
340 new Function(`return ${taskFunction}`)() as TaskFunction<
d2dd5ef5
JB
341 Data,
342 Response
343 >
344 )
345 break
346 case 'remove':
7f0e1334 347 response = this.removeTaskFunction(taskFunctionName)
d2dd5ef5
JB
348 break
349 case 'default':
7f0e1334 350 response = this.setDefaultTaskFunction(taskFunctionName)
d2dd5ef5
JB
351 break
352 default:
353 response = { status: false, error: new Error('Unknown task operation') }
354 break
6703b9f4
JB
355 }
356 this.sendToMainWorker({
357 taskFunctionOperation,
358 taskFunctionOperationStatus: response.status,
adee6053
JB
359 taskFunctionName,
360 ...(!response.status &&
c63a35a0 361 response.error != null && {
adee6053 362 workerError: {
7f0e1334 363 name: taskFunctionName,
adee6053
JB
364 message: this.handleError(response.error as Error | string)
365 }
366 })
6703b9f4
JB
367 })
368 }
369
984dc9c8
JB
370 /**
371 * Handles a kill message sent by the main worker.
372 *
373 * @param message - The kill message.
374 */
97cf8c0d 375 protected handleKillMessage (_message: MessageValue<Data>): void {
29d8b961 376 this.stopCheckActive()
07588f30 377 if (isAsyncFunction(this.opts.killHandler)) {
c63a35a0 378 (this.opts.killHandler() as Promise<void>)
1e3214b6 379 .then(() => {
895b5341 380 this.sendToMainWorker({ kill: 'success' })
fefd3cef 381 return undefined
1e3214b6
JB
382 })
383 .catch(() => {
895b5341 384 this.sendToMainWorker({ kill: 'failure' })
1e3214b6 385 })
07588f30 386 } else {
1e3214b6
JB
387 try {
388 // eslint-disable-next-line @typescript-eslint/no-invalid-void-type
389 this.opts.killHandler?.() as void
895b5341 390 this.sendToMainWorker({ kill: 'success' })
7c8ac84e 391 } catch {
895b5341 392 this.sendToMainWorker({ kill: 'failure' })
1e3214b6 393 }
07588f30 394 }
984dc9c8
JB
395 }
396
9e746eec
JB
397 /**
398 * Check if the message worker id is set and matches the worker id.
399 *
400 * @param message - The message to check.
401 * @throws {@link https://nodejs.org/api/errors.html#class-error} If the message worker id is not set or does not match the worker id.
402 */
403 private checkMessageWorkerId (message: MessageValue<Data>): void {
404 if (message.workerId == null) {
405 throw new Error('Message worker id is not set')
8e5a7cf9 406 } else if (message.workerId !== this.id) {
9e746eec
JB
407 throw new Error(
408 `Message worker id ${message.workerId} does not match the worker id ${this.id}`
409 )
410 }
411 }
412
48487131 413 /**
b0a4db63 414 * Starts the worker check active interval.
48487131 415 */
b0a4db63 416 private startCheckActive (): void {
75d3401a 417 this.lastTaskTimestamp = performance.now()
b0a4db63
JB
418 this.activeInterval = setInterval(
419 this.checkActive.bind(this),
75d3401a 420 (this.opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME) / 2
984dc9c8 421 )
75d3401a
JB
422 }
423
48487131 424 /**
b0a4db63 425 * Stops the worker check active interval.
48487131 426 */
b0a4db63 427 private stopCheckActive (): void {
c3f498b5
JB
428 if (this.activeInterval != null) {
429 clearInterval(this.activeInterval)
430 delete this.activeInterval
431 }
48487131
JB
432 }
433
434 /**
435 * Checks if the worker should be terminated, because its living too long.
436 */
b0a4db63 437 private checkActive (): void {
48487131
JB
438 if (
439 performance.now() - this.lastTaskTimestamp >
440 (this.opts.maxInactiveTime ?? DEFAULT_MAX_INACTIVE_TIME)
441 ) {
895b5341 442 this.sendToMainWorker({ kill: this.opts.killBehavior })
48487131
JB
443 }
444 }
445
729c563d
S
446 /**
447 * Returns the main worker.
838898f1
S
448 *
449 * @returns Reference to the main worker.
155bb3de 450 * @throws {@link https://nodejs.org/api/errors.html#class-error} If the main worker is not set.
729c563d 451 */
838898f1 452 protected getMainWorker (): MainWorker {
78cea37e 453 if (this.mainWorker == null) {
e102732c 454 throw new Error('Main worker not set')
838898f1
S
455 }
456 return this.mainWorker
457 }
c97c7edb 458
729c563d 459 /**
aa9eede8 460 * Sends a message to main worker.
729c563d 461 *
38e795c1 462 * @param message - The response message.
729c563d 463 */
82f36766
JB
464 protected abstract sendToMainWorker (
465 message: MessageValue<Response, Data>
466 ): void
c97c7edb 467
90d7d101 468 /**
e81c38f2 469 * Sends task function names to the main worker.
90d7d101 470 */
e81c38f2 471 protected sendTaskFunctionNamesToMainWorker (): void {
90d7d101 472 this.sendToMainWorker({
895b5341 473 taskFunctionNames: this.listTaskFunctionNames()
90d7d101
JB
474 })
475 }
476
729c563d 477 /**
8accb8d5 478 * Handles an error and convert it to a string so it can be sent back to the main worker.
729c563d 479 *
6703b9f4 480 * @param error - The error raised by the worker.
ab80dc46 481 * @returns The error message.
729c563d 482 */
6703b9f4
JB
483 protected handleError (error: Error | string): string {
484 return error instanceof Error ? error.message : error
c97c7edb
S
485 }
486
5c4d16da
JB
487 /**
488 * Runs the given task.
489 *
490 * @param task - The task to execute.
5c4d16da 491 */
803f948f 492 protected readonly run = (task: Task<Data>): void => {
9d2d0da1 493 const { name, taskId, data } = task
c878a240
JB
494 const taskFunctionName = name ?? DEFAULT_TASK_NAME
495 if (!this.taskFunctions.has(taskFunctionName)) {
9d2d0da1 496 this.sendToMainWorker({
6703b9f4 497 workerError: {
67f3f2d6
JB
498 // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
499 name: name!,
c63a35a0 500 message: `Task function '${name}' not found`,
9d2d0da1
JB
501 data
502 },
9d2d0da1
JB
503 taskId
504 })
505 return
506 }
c878a240 507 const fn = this.taskFunctions.get(taskFunctionName)
5c4d16da 508 if (isAsyncFunction(fn)) {
69b70a7e 509 this.runAsync(fn as TaskAsyncFunction<Data, Response>, task)
5c4d16da 510 } else {
69b70a7e 511 this.runSync(fn as TaskSyncFunction<Data, Response>, task)
5c4d16da
JB
512 }
513 }
514
729c563d 515 /**
4dd93fcf 516 * Runs the given task function synchronously.
729c563d 517 *
5c4d16da
JB
518 * @param fn - Task function that will be executed.
519 * @param task - Input data for the task function.
729c563d 520 */
803f948f 521 protected readonly runSync = (
82ea6492 522 fn: TaskSyncFunction<Data, Response>,
5c4d16da 523 task: Task<Data>
803f948f 524 ): void => {
310de0aa 525 const { name, taskId, data } = task
c97c7edb 526 try {
310de0aa
JB
527 let taskPerformance = this.beginTaskPerformance(name)
528 const res = fn(data)
d715b7bc 529 taskPerformance = this.endTaskPerformance(taskPerformance)
3fafb1b2
JB
530 this.sendToMainWorker({
531 data: res,
d715b7bc 532 taskPerformance,
310de0aa 533 taskId
3fafb1b2 534 })
6703b9f4 535 } catch (error) {
91ee39ed 536 this.sendToMainWorker({
6703b9f4 537 workerError: {
67f3f2d6
JB
538 // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
539 name: name!,
6703b9f4 540 message: this.handleError(error as Error | string),
310de0aa 541 data
82f36766 542 },
310de0aa 543 taskId
91ee39ed 544 })
6e9d10db 545 } finally {
c3f498b5 546 this.updateLastTaskTimestamp()
c97c7edb
S
547 }
548 }
549
729c563d 550 /**
4dd93fcf 551 * Runs the given task function asynchronously.
729c563d 552 *
5c4d16da
JB
553 * @param fn - Task function that will be executed.
554 * @param task - Input data for the task function.
729c563d 555 */
803f948f 556 protected readonly runAsync = (
82ea6492 557 fn: TaskAsyncFunction<Data, Response>,
5c4d16da 558 task: Task<Data>
803f948f 559 ): void => {
310de0aa
JB
560 const { name, taskId, data } = task
561 let taskPerformance = this.beginTaskPerformance(name)
562 fn(data)
041dc05b 563 .then(res => {
d715b7bc 564 taskPerformance = this.endTaskPerformance(taskPerformance)
3fafb1b2
JB
565 this.sendToMainWorker({
566 data: res,
d715b7bc 567 taskPerformance,
310de0aa 568 taskId
3fafb1b2 569 })
04714ef7 570 return undefined
c97c7edb 571 })
07f6f7b1 572 .catch((error: unknown) => {
91ee39ed 573 this.sendToMainWorker({
6703b9f4 574 workerError: {
67f3f2d6
JB
575 // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
576 name: name!,
6703b9f4 577 message: this.handleError(error as Error | string),
310de0aa 578 data
82f36766 579 },
310de0aa 580 taskId
91ee39ed 581 })
6e9d10db
JB
582 })
583 .finally(() => {
c3f498b5 584 this.updateLastTaskTimestamp()
c97c7edb 585 })
6e9d10db 586 .catch(EMPTY_FUNCTION)
c97c7edb 587 }
ec8fd331 588
197b4aa5 589 private beginTaskPerformance (name?: string): TaskPerformance {
c63a35a0
JB
590 if (this.statistics == null) {
591 throw new Error('Performance statistics computation requirements not set')
592 }
62c15a68 593 return {
ff128cc9 594 name: name ?? DEFAULT_TASK_NAME,
1c6fe997 595 timestamp: performance.now(),
c63a35a0
JB
596 ...(this.statistics.elu && {
597 elu: performance.eventLoopUtilization()
598 })
62c15a68
JB
599 }
600 }
601
d9d31201
JB
602 private endTaskPerformance (
603 taskPerformance: TaskPerformance
604 ): TaskPerformance {
c63a35a0
JB
605 if (this.statistics == null) {
606 throw new Error('Performance statistics computation requirements not set')
607 }
62c15a68
JB
608 return {
609 ...taskPerformance,
b6b32453
JB
610 ...(this.statistics.runTime && {
611 runTime: performance.now() - taskPerformance.timestamp
612 }),
613 ...(this.statistics.elu && {
62c15a68 614 elu: performance.eventLoopUtilization(taskPerformance.elu)
b6b32453 615 })
62c15a68
JB
616 }
617 }
8a970421 618
c3f498b5 619 private updateLastTaskTimestamp (): void {
29d8b961 620 if (this.activeInterval != null) {
c3f498b5
JB
621 this.lastTaskTimestamp = performance.now()
622 }
623 }
c97c7edb 624}