CHANGELOG.md

   1 # Changelog
   2
   3 All notable changes to this project will be documented in this file.
   4
   5 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
   6 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   7
   8 ## [Unreleased]
   9
  10 ### Fixed
  11
  12 - Fix source maps (bundler issue).
  13
  14 ## [2.7.3] - 2023-09-24
  15
  16 ### Changed
  17
  18 - Convert pool event emitter to event emitter async resource.
  19
  20 ## [2.7.2] - 2023-09-23
  21
  22 ### Changed
  23
  24 - Add source maps to npm package to ease debugging.
  25
  26 ### Added
  27
  28 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
  29
  30 ## [2.7.1] - 2023-09-20
  31
  32 ### Fixed
  33
  34 - Ensure worker message listener used one time are removed after usage.
  35
  36 ## [2.7.0] - 2023-09-19
  37
  38 ### Fixed
  39
  40 - Fix task stealing related tasks queue options handling at runtime.
  41
  42 ### Changed
  43
  44 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
  45
  46 ### Added
  47
  48 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
  49 - Stricter worker constructor arguments validation.
  50
  51 ## [2.6.45] - 2023-09-17
  52
  53 ### Changed
  54
  55 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
  56
  57 ### Added
  58
  59 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
  60 - Add `start()` method to pool API to start the minimum number of workers.
  61 - Add `taskStealing` and `tasksStealingOnPressure` to tasks queue options to whether enable task stealing or not and whether enable tasks stealing on back pressure or not.
  62 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
  63
  64 ## [2.6.44] - 2023-09-08
  65
  66 ### Fixed
  67
  68 - Use a dedicated PAT to publish on GitHub packages registry.
  69
  70 ### Added
  71
  72 - Publish on GitHub packages registry on release.
  73
  74 ### Changed
  75
  76 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
  77
  78 ## [2.6.43] - 2023-09-08
  79
  80 ### Added
  81
  82 - Publish on GitHub packages registry on release.
  83
  84 ### Changed
  85
  86 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
  87
  88 ## [2.6.42] - 2023-09-06
  89
  90 ### Changed
  91
  92 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
  93
  94 ## [2.6.41] - 2023-09-03
  95
  96 ### Changed
  97
  98 - Optimize worker choice strategies implementation.
  99
 100 ## [2.6.40] - 2023-09-01
 101
 102 ### Fixed
 103
 104 - Do not pre-choose in WRR worker choice strategy to avoid bias.
 105 - Avoid array out of bound in worker choice strategies after worker node removal.
 106
 107 ## [2.6.39] - 2023-08-30
 108
 109 ### Fixed
 110
 111 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
 112
 113 ## [2.6.38] - 2023-08-30
 114
 115 ### Added
 116
 117 - Bundle typescript types declaration into one file.
 118
 119 ### Changed
 120
 121 - Improve interleaved weighted round robin worker choice strategy implementation.
 122
 123 ## [2.6.37] - 2023-08-28
 124
 125 ### Fixed
 126
 127 - Ensure unused worker usage statistics are deleted at runtime.
 128
 129 ### Changed
 130
 131 - Rename worker choice strategy options `choiceRetries` to `retries`.
 132 - Avoid unnecessary branching in worker choice strategies.
 133
 134 ## [2.6.36] - 2023-08-27
 135
 136 ### Fixed
 137
 138 - Fix pool `execute()` arguments check.
 139
 140 ### Changed
 141
 142 - Make continuous tasks stealing algorithm less aggressive.
 143 - Fine tune tasks stealing algorithm under back pressure.
 144
 145 ## [2.6.35] - 2023-08-25
 146
 147 ### Fixed
 148
 149 - Don't account worker usage statistics for tasks that have failed.
 150 - Fix pool information runtime and wait time median computation.
 151
 152 ### Changed
 153
 154 - Update simple moving average implementation to use a circular buffer.
 155 - Update simple moving median implementation to use a circular buffer.
 156 - Account for stolen tasks in worker usage statistics and pool information.
 157
 158 ### Added
 159
 160 - Continuous tasks stealing algorithm.
 161
 162 ## [2.6.34] - 2023-08-24
 163
 164 ### Fixes
 165
 166 - Avoid cascading tasks stealing under back pressure.
 167
 168 ### Changed
 169
 170 - Add fastpath to queued tasks rescheduling.
 171
 172 ## [2.6.33] - 2023-08-24
 173
 174 ### Fixed
 175
 176 - Fix queued tasks rescheduling.
 177
 178 ### Changed
 179
 180 - Rename tasks queue options `queueMaxSize` to `size`.
 181
 182 ### Added
 183
 184 - Task stealing scheduling algorithm if tasks queueing is enabled.
 185
 186 ## [2.6.32] - 2023-08-23
 187
 188 ### Fixed
 189
 190 - Ensure no task can be executed when the pool is destroyed.
 191
 192 ### Added
 193
 194 - Add `queueMaxSize` option to tasks queue options.
 195 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
 196 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
 197
 198 ## [2.6.31] - 2023-08-20
 199
 200 ### Fixed
 201
 202 - Fix worker choice strategy retries mechanism in some edge cases.
 203
 204 ### Changed
 205
 206 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
 207 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
 208
 209 ## [2.6.30] - 2023-08-19
 210
 211 ### Fixed
 212
 213 - Ensure pool event `backPressure` is emitted.
 214 - Ensure pool event `full` is emitted only once.
 215 - Ensure worker node cannot be instantiated without proper arguments.
 216
 217 ## [2.6.29] - 2023-08-18
 218
 219 ### Fixed
 220
 221 - Fix race condition between ready and task functions worker message handling at startup.
 222 - Fix duplicate task function worker usage statistics computation per task function.
 223 - Update task function worker usage statistics if and only if there's at least two different task functions.
 224 - Fix race condition at task function worker usage executing task computation leading to negative value.
 225
 226 ### Added
 227
 228 - Add back pressure detection on the worker node queue. Event `backPressure` is emitted when all worker node queues are full (worker node queue size >= poolMaxSize^2).
 229 - Use back pressure detection in worker choice strategies.
 230 - Add worker choice strategies retries mechanism if no worker is eligible.
 231
 232 ## [2.6.28] - 2023-08-16
 233
 234 ### Fixed
 235
 236 - Ensure pool workers are properly initialized.
 237
 238 ### Added
 239
 240 - HTTP server pool examples: express-cluster, express-hybrid.
 241
 242 ### Changed
 243
 244 - Remove now useless branching in worker hot code path.
 245
 246 ## [2.6.27] - 2023-08-15
 247
 248 ### Fixed
 249
 250 - Add `KillHandler` type definition to exported types.
 251
 252 ### Added
 253
 254 - Add `destroy` event to pool API.
 255
 256 ## [2.6.26] - 2023-08-15
 257
 258 ### Added
 259
 260 - Add kill handler to worker options allowing to execute custom code when worker is killed.
 261 - Add `listTaskFunctions()` method to pool API.
 262 - SMTP client pool example: nodemailer.
 263
 264 ## [2.6.25] - 2023-08-13
 265
 266 ### Added
 267
 268 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
 269 - WebSocket server pool examples: ws-cluster, ws-hybrid.
 270
 271 ## [2.6.24] - 2023-08-12
 272
 273 ### Added
 274
 275 - Add array of transferable objects to the `execute()` method arguments.
 276 - WebSocket server pool examples: ws-worker_threads.
 277
 278 ## [2.6.23] - 2023-08-11
 279
 280 ### Fixed
 281
 282 - Fix pool busyness semantic when tasks queueing is enabled: the pool is busy when the number of executing tasks on each worker has reached the maximum tasks concurrency per worker.
 283
 284 ### Added
 285
 286 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
 287 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
 288
 289 ## [2.6.22] - 2023-08-10
 290
 291 ### Fixed
 292
 293 - Add missing `types` field to package.json `exports`.
 294
 295 ### Changed
 296
 297 - Structure markdown documentation (PR #811).
 298
 299 ## [2.6.21] - 2023-08-03
 300
 301 ### Changed
 302
 303 - Improve code documentation.
 304 - Code refactoring and cleanup for better maintainability and readability.
 305
 306 ## [2.6.20] - 2023-07-21
 307
 308 ### Fixed
 309
 310 - Fix queued tasks redistribution on error task execution starvation.
 311 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
 312
 313 ### Changed
 314
 315 - Drastically reduce lookups by worker in the worker nodes.
 316
 317 ## [2.6.19] - 2023-07-20
 318
 319 ### Added
 320
 321 - Dedicated internal communication channel for worker_threads pools.
 322
 323 ## [2.6.18] - 2023-07-19
 324
 325 ### Changed
 326
 327 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
 328
 329 ## [2.6.17] - 2023-07-16
 330
 331 ### Added
 332
 333 - Add `listTaskFunctions()` method to worker API.
 334
 335 ## [2.6.16] - 2023-07-12
 336
 337 ### Fixed
 338
 339 - Fix pool startup detection.
 340 - Fix worker task functions handling.
 341
 342 ## [2.6.15] - 2023-07-11
 343
 344 ### Added
 345
 346 - Take into account worker node readiness in worker choice strategies.
 347
 348 ## [2.6.14] - 2023-07-10
 349
 350 ### Fixed
 351
 352 - Fix task function statistics tracking.
 353
 354 ## [2.6.13] - 2023-07-10
 355
 356 ### Added
 357
 358 - Add per task function statistics tracking.
 359 - Add public methods to manipulate the worker task functions at runtime.
 360
 361 ## [2.6.12] - 2023-07-09
 362
 363 ### Fixed
 364
 365 - Workaround import issue with `node:os` module in node 16.x.x.
 366
 367 ## [2.6.11] - 2023-07-09
 368
 369 ### Fixed
 370
 371 - Fix pool readiness semantic.
 372
 373 ## [2.6.10] - 2023-07-08
 374
 375 ### Fixed
 376
 377 - Ensure workers are not recreated on error at pool startup.
 378
 379 ### Added
 380
 381 - Add `ready` and `strategy` fields to pool information.
 382 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
 383 - Add dynamic pool sizing checks.
 384
 385 ## [2.6.9] - 2023-07-07
 386
 387 ### Fixed
 388
 389 - Recreate the right worker type on uncaught exception.
 390
 391 ### Added
 392
 393 - Add minimum and maximum to internal measurement statistics.
 394 - Add `runTime` and `waitTime` to pool information.
 395 - Check worker inactive time only on dynamic worker.
 396
 397 ## [2.6.8] - 2023-07-03
 398
 399 ### Fixed
 400
 401 - Brown paper bag release to fix version handling in pool information.
 402
 403 ## [2.6.7] - 2023-07-03
 404
 405 ### Fixed
 406
 407 - Ensure worker queued tasks at error are reassigned to other pool workers.
 408
 409 ### Added
 410
 411 - Add pool `utilization` ratio to pool information.
 412 - Add `version` to pool information.
 413 - Add worker information to worker nodes.
 414
 415 ## [2.6.6] - 2023-07-01
 416
 417 ### Added
 418
 419 - Add safe helper `availableParallelism()` to help sizing the pool.
 420
 421 ### Fixed
 422
 423 - Ensure message handler is only registered in worker.
 424
 425 ## [2.6.5] - 2023-06-27
 426
 427 ### Known issues
 428
 429 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
 430
 431 ### Fixed
 432
 433 - Artificial version bump to 2.6.5 to workaround publication issue.
 434 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
 435 - Ensure pool event is emitted before task error promise rejection.
 436 - Fix queued tasks count computation.
 437
 438 ### Removed
 439
 440 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
 441
 442 ## [2.6.4] - 2023-06-27
 443
 444 ### Known issues
 445
 446 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
 447
 448 ### Fixed
 449
 450 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
 451 - Ensure pool event is emitted before task error promise rejection.
 452 - Fix queued tasks count computation.
 453
 454 ### Removed
 455
 456 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
 457
 458 ## [2.6.3] - 2023-06-19
 459
 460 ### Fixed
 461
 462 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
 463 - Update strategies internals after statistics computation.
 464
 465 ### Changed
 466
 467 - Optimize O(1) queue implementation.
 468
 469 ## [2.6.2] - 2023-06-12
 470
 471 ### Fixed
 472
 473 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
 474
 475 ## [2.6.1] - 2023-06-10
 476
 477 ### Added
 478
 479 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
 480
 481 ### Fixed
 482
 483 - Fix average statistics computation: ensure failed tasks are not accounted.
 484
 485 ## [2.6.0] - 2023-06-09
 486
 487 ### Added
 488
 489 - Add `LEAST_ELU` worker choice strategy (experimental).
 490 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
 491
 492 ### Changed
 493
 494 - Refactor pool worker node usage internals.
 495 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
 496 - Breaking change: pool information `info` property object fields have been renamed.
 497
 498 ### Fixed
 499
 500 - Fix wait time accounting.
 501 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
 502 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
 503
 504 ## [2.5.4] - 2023-06-07
 505
 506 ### Added
 507
 508 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
 509
 510 ### Changed
 511
 512 - Compute statistics at the worker level only if needed.
 513 - Add `worker_threads` options to thread pool options.
 514
 515 ### Fixed
 516
 517 - Make the `LEAST_BUSY` strategy only relies on task runtime.
 518
 519 ## [2.5.3] - 2023-06-04
 520
 521 ### Changed
 522
 523 - Refine pool information content.
 524 - Limit pool internals public exposure.
 525
 526 ## [2.5.2] - 2023-06-02
 527
 528 ### Added
 529
 530 - Add `taskError` pool event for task execution error.
 531 - Add pool information `info` property to pool.
 532 - Emit pool information on `busy` and `full` pool events.
 533
 534 ## [2.5.1] - 2023-06-01
 535
 536 ### Added
 537
 538 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
 539 - Add `error` pool event for uncaught worker error.
 540
 541 ## [2.5.0] - 2023-05-31
 542
 543 ### Added
 544
 545 - Switch pool event emitter to `EventEmitterAsyncResource`.
 546 - Add tasks wait time accounting in per worker tasks usage.
 547 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
 548
 549 ### Changed
 550
 551 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
 552
 553 ## [2.4.14] - 2023-05-09
 554
 555 ### Fixed
 556
 557 - Ensure no undefined task runtime can land in the tasks history.
 558 - Fix median computation implementation once again.
 559
 560 ### Added
 561
 562 - Unit tests for median and queue implementations.
 563
 564 ## [2.4.13] - 2023-05-08
 565
 566 ### Fixed
 567
 568 - Fix worker choice strategy options validation.
 569 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
 570
 571 ## [2.4.12] - 2023-05-06
 572
 573 ### Added
 574
 575 - Support multiple task functions per worker.
 576 - Add custom worker weights support to worker choice strategies options.
 577
 578 ### Changed
 579
 580 - Use O(1) queue implementation for tasks queueing.
 581
 582 ### Fixed
 583
 584 - Fix median computation implementation.
 585 - Fix fair share worker choice strategy internals update.
 586
 587 ## [2.4.11] - 2023-04-23
 588
 589 ### Changed
 590
 591 - Optimize free worker finding in worker choice strategies.
 592
 593 ## [2.4.10] - 2023-04-15
 594
 595 ### Fixed
 596
 597 - Fix typescript type definition for task function: ensure the input data is optional.
 598 - Fix typescript type definition for pool execute(): ensure the input data is optional.
 599
 600 ## [2.4.9] - 2023-04-15
 601
 602 ### Added
 603
 604 - Add tasks queue enablement runtime setter to pool.
 605 - Add tasks queue options runtime setter to pool.
 606 - Add worker choice strategy options runtime setter to pool.
 607
 608 ### Changed
 609
 610 - Remove the tasks queuing experimental status.
 611
 612 ### Fixed
 613
 614 - Fix task function type definition and validation.
 615 - Fix worker choice strategy options handling.
 616
 617 ## [2.4.8] - 2023-04-12
 618
 619 ### Fixed
 620
 621 - Fix message between main worker and worker type definition for tasks.
 622 - Fix code documentation.
 623
 624 ## [2.4.7] - 2023-04-11
 625
 626 ### Added
 627
 628 - Add worker tasks queue options to pool options.
 629
 630 ### Fixed
 631
 632 - Fix missing documentation.
 633
 634 ## [2.4.6] - 2023-04-10
 635
 636 ### Fixed
 637
 638 - Ensure one task at a time is executed per worker with tasks queueing enabled.
 639 - Properly count worker executing tasks with tasks queueing enabled.
 640
 641 ## [2.4.5] - 2023-04-09
 642
 643 ### Added
 644
 645 - Use monotonic high resolution timer for worker tasks runtime.
 646 - Add worker tasks median runtime to statistics.
 647 - Add worker tasks queue (experimental).
 648
 649 ## [2.4.4] - 2023-04-07
 650
 651 ### Added
 652
 653 - Add `PoolEvents` enumeration and `PoolEvent` type.
 654
 655 ### Fixed
 656
 657 - Destroy worker only on alive check.
 658
 659 ## [2.4.3] - 2023-04-07
 660
 661 ### Fixed
 662
 663 - Fix typedoc generation with inheritance.
 664
 665 ## [2.4.2] - 2023-04-06
 666
 667 ### Added
 668
 669 - Add `full` event to dynamic pool.
 670 - Keep worker choice strategy in memory for conditional reuse.
 671
 672 ### Fixed
 673
 674 - Fix possible negative worker key at worker removal in worker choice strategies.
 675
 676 ## [2.4.1] - 2023-04-05
 677
 678 ### Changed
 679
 680 - Optimize worker choice strategy for dynamic pool.
 681
 682 ### Fixed
 683
 684 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
 685
 686 ## [2.4.0] - 2023-04-04
 687
 688 ### Added
 689
 690 - Add `LESS_BUSY` worker choice strategy.
 691
 692 ### Changed
 693
 694 - Optimize worker storage in pool.
 695 - Optimize worker alive status check.
 696 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 697 - Optimize `LESS_USED` worker choice strategy.
 698 - Update benchmark versus external threads pools.
 699 - Optimize tasks usage statistics requirements for worker choice strategy.
 700
 701 ### Fixed
 702
 703 - Ensure trimmable characters are checked at pool initialization.
 704 - Fix message id integer overflow.
 705 - Fix pool worker removal in worker choice strategy internals.
 706 - Fix package publication with pnpm.
 707
 708 ## [2.4.0-3] - 2023-04-04
 709
 710 ### Added
 711
 712 - Add `LESS_BUSY` worker choice strategy.
 713
 714 ### Changed
 715
 716 - Optimize worker storage in pool.
 717 - Optimize worker alive status check.
 718 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 719 - Optimize `LESS_USED` worker choice strategy.
 720 - Update benchmark versus external threads pools.
 721
 722 ### Fixed
 723
 724 - Ensure trimmable characters are checked at pool initialization.
 725 - Fix message id integer overflow.
 726 - Fix pool worker removal in worker choice strategy internals.
 727 - Fix package publication with pnpm.
 728
 729 ## [2.4.0-2] - 2023-04-03
 730
 731 ### Added
 732
 733 - Add `LESS_BUSY` worker choice strategy.
 734
 735 ### Changed
 736
 737 - Optimize worker storage in pool.
 738 - Optimize worker alive status check.
 739 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 740 - Optimize `LESS_USED` worker choice strategy.
 741
 742 ### Fixed
 743
 744 - Ensure trimmable characters are checked at pool initialization.
 745 - Fix message id integer overflow.
 746 - Fix pool worker removal in worker choice strategy internals.
 747 - Fix package publication with pnpm.
 748
 749 ## [2.4.0-1] - 2023-04-03
 750
 751 ### Added
 752
 753 - Add `LESS_BUSY` worker choice strategy.
 754
 755 ### Changed
 756
 757 - Optimize worker storage in pool.
 758 - Optimize worker alive status check.
 759 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 760 - Optimize `LESS_USED` worker choice strategy.
 761
 762 ### Fixed
 763
 764 - Ensure trimmable characters are checked at pool initialization.
 765 - Fix message id integer overflow.
 766 - Fix pool worker removal in worker choice strategy internals.
 767
 768 ## [2.4.0-0] - 2023-04-03
 769
 770 ### Added
 771
 772 - Add `LESS_BUSY` worker choice strategy.
 773
 774 ### Changed
 775
 776 - Optimize worker storage in pool.
 777 - Optimize worker alive status check.
 778 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
 779 - Optimize `LESS_USED` worker choice strategy.
 780
 781 ### Fixed
 782
 783 - Ensure trimmable characters are checked at pool initialization.
 784 - Fix message id integer overflow.
 785 - Fix pool worker removal in worker choice strategy internals.
 786
 787 ## [2.3.10] - 2023-03-18
 788
 789 ### Fixed
 790
 791 - Fix package.json `exports` syntax for ESM and CommonJS.
 792
 793 ### Changed
 794
 795 - Permit SemVer pre-release publication.
 796
 797 ## [2.3.10-2] - 2023-03-18
 798
 799 ### Fixed
 800
 801 - Fix package.json `exports` syntax for ESM and CommonJS.
 802
 803 ## [2.3.10-1] - 2023-03-18
 804
 805 ### Changed
 806
 807 - Permit SemVer pre-release publication.
 808
 809 ## [2.3.10-0] - 2023-03-18
 810
 811 ### Fixed
 812
 813 - Fix package.json `exports` syntax for ESM and CommonJS.
 814
 815 ## [2.3.9] - 2023-03-18
 816
 817 ### Changed
 818
 819 - Introduce ESM module support along with CommonJS one.
 820
 821 ### Fixed
 822
 823 - Fix brown paper bag bug referencing the same object literal.
 824
 825 ## [2.3.8] - 2023-03-18
 826
 827 ### Changed
 828
 829 - Switch internal benchmarking code to benny.
 830 - Switch to TypeScript 5.x.x.
 831 - Switch rollup bundler plugins to core ones.
 832 - Switch to TSDoc syntax.
 833 - Enforce conventional commits.
 834
 835 ### Fixed
 836
 837 - Fix random integer generator.
 838 - Fix worker choice strategy pool type identification at initialization.
 839
 840 ## [2.3.7] - 2022-10-23
 841
 842 ### Changed
 843
 844 - Switch to open collective FOSS project funding platform.
 845 - Switch to ts-standard linter configuration on TypeScript code.
 846
 847 ### Fixed
 848
 849 - Fixed missing async on pool execute method.
 850 - Fixed typing in TypeScript example.
 851 - Fixed types in unit tests.
 852
 853 ## [2.3.6] - 2022-10-22
 854
 855 ### Changed
 856
 857 - Cleanup pool attributes and methods.
 858 - Refine error types thrown.
 859
 860 ### Fixed
 861
 862 - Fix continuous integration build on windows.
 863 - Fix code coverage reporting by using c8 instead of nyc.
 864
 865 ## [2.3.5] - 2022-10-21
 866
 867 ### Changed
 868
 869 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
 870 - Optimize tasks usage lookup implementation.
 871
 872 ### Fixed
 873
 874 - Fix missed pool event emitter type export.
 875 - Fix typedoc documentation generation.
 876
 877 ## [2.3.4] - 2022-10-17
 878
 879 ### Added
 880
 881 - Fully automate release process with release-it.
 882
 883 ### Changed
 884
 885 - Optimize fair share task scheduling algorithm implementation.
 886 - Update benchmark versus external pools results with latest version.
 887
 888 ## [2.3.3] - 2022-10-15
 889
 890 ### Added
 891
 892 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
 893
 894 ## [2.3.2] - 2022-10-14
 895
 896 ### Changed
 897
 898 - Optimize fair share worker selection strategy implementation.
 899
 900 ### Fixed
 901
 902 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
 903
 904 ## [2.3.1] - 2022-10-13
 905
 906 ### Added
 907
 908 - Pool worker choice strategies:
 909   - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
 910   - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
 911
 912 ## [2.2.2] - 2022-10-09
 913
 914 ### Fixed
 915
 916 - Fixed `README.md` file.
 917
 918 ## [2.2.1] - 2022-10-08
 919
 920 ### Added
 921
 922 - Dynamic worker choice strategy change at runtime.
 923
 924 ## [2.2.0] - 2022-01-05
 925
 926 ### Breaking Changes
 927
 928 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
 929
 930 ## [2.1.0] - 2021-08-29
 931
 932 ### Added
 933
 934 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
 935
 936 ### Breaking Changes
 937
 938 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
 939 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
 940 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
 941 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
 942
 943 ## [2.0.2] - 2021-05-12
 944
 945 ### Bug fixes
 946
 947 - Fix `busy` event emission on fixed pool type
 948
 949 ## [2.0.1] - 2021-03-16
 950
 951 ### Bug fixes
 952
 953 - Check if pool options are properly set.
 954 - `busy` event is emitted on all pool types.
 955
 956 ## [2.0.0] - 2021-03-01
 957
 958 ### Bug fixes
 959
 960 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
 961
 962 ### Breaking Changes
 963
 964 - `FullPool` event is now renamed to `busy`.
 965 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
 966   _Find more details on our JSDoc._
 967
 968 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
 969
 970 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
 971
 972 ### Pool options types declaration merge
 973
 974 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
 975
 976 #### New `export` strategy
 977
 978 ```js
 979 // Before
 980 const DynamicThreadPool = require('poolifier/lib/dynamic')
 981 // After
 982 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
 983 ```
 984
 985 But you should always prefer just using
 986
 987 ```js
 988 const { DynamicThreadPool } = require('poolifier')
 989 ```
 990
 991 #### New type definitions for input data and response
 992
 993 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
 994 _This is not a limitation by poolifier but Node.js._
 995
 996 #### Public property replacements
 997
 998 `numWorkers` property is now `numberOfWorkers`
 999
1000 #### Internal (protected) properties and methods renaming
1001
1002 These properties are not intended for end users
1003
1004 - `id` => `nextMessageId`
1005
1006 These methods are not intended for end users
1007
1008 - `_chooseWorker` => `chooseWorker`
1009 - `_newWorker` => `createWorker`
1010 - `_execute` => `internalExecute`
1011 - `_chooseWorker` => `chooseWorker`
1012 - `_checkAlive` => `checkAlive`
1013 - `_run` => `run`
1014 - `_runAsync` => `runAsync`
1015
1016 ## [1.1.0] - 2020-05-21
1017
1018 ### Added
1019
1020 - ThreadWorker support async functions as option
1021 - Various external library patches
1022
1023 ## [1.0.0] - 2020-01-24
1024
1025 ### Added
1026
1027 - FixedThreadPool implementation
1028 - DynamicThreadPool implementation
1029 - WorkerThread implementation to improve developer experience