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