3 All notable changes to this project will be documented in this file.
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).
10 ## [3.0.5] - 2023-10-27
14 - Ensure pool ready event can be emitted only once.
16 ## [3.0.4] - 2023-10-20
20 - Switch to Bencher for benchmarking: [https://bencher.dev/perf/poolifier](https://bencher.dev/perf/poolifier).
21 - Use builtin retry mechanism in worker choice strategies instead of custom one.
23 ## [3.0.3] - 2023-10-19
27 - Avoid null exception at sending message to worker.
28 - Avoid null exception at checking worker node readiness.
30 ## [3.0.2] - 2023-10-17
34 - Fix race condition at dynamic worker node task assignment and scheduled removal. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468) and [#1496](https://github.com/poolifier/poolifier/issues/1496).
36 ## [3.0.1] - 2023-10-16
40 - Workaround possible race condition at work nodes array element removal and querying. See issue [#1468](https://github.com/poolifier/poolifier/issues/1468).
44 - Switch the worker node eventing code to `EventTarget` API.
46 ## [3.0.0] - 2023-10-08
50 - Remove Node.js 16.x.x (EOL) support.
52 ## [2.7.5] - 2023-10-03
56 - Use `EventEmitterAsyncResource` type from `@types/node` for pool event emitter. TypeScript users will need to update to latest `@types/node` version.
58 ## [2.7.4] - 2023-09-25
62 - Fix source maps (bundler issue).
64 ## [2.7.3] - 2023-09-24
68 - Convert pool event emitter to event emitter async resource.
70 ## [2.7.2] - 2023-09-23
74 - Add source maps to npm package to ease debugging.
78 - Continuous benchmarking versus other worker pools: [https://poolifier.github.io/benchmark](https://poolifier.github.io/benchmark).
80 ## [2.7.1] - 2023-09-20
84 - Ensure worker message listener used one time are removed after usage.
86 ## [2.7.0] - 2023-09-19
90 - Fix task stealing related tasks queue options handling at runtime.
94 - Rename `listTaskFunctions()` to `listTaskFunctionNames()` in pool and worker API.
98 - Add `hasTaskFunction()`, `addTaskFunction()`, `removeTaskFunction()`, `setDefaultTaskFunction()` methods to pool API: [PR #1148](https://github.com/poolifier/poolifier/pull/1148).
99 - Stricter worker constructor arguments validation.
101 ## [2.6.45] - 2023-09-17
105 - Disable publication on GitHub packages registry on release until authentication issue is fixed.
109 - Add `startWorkers` to pool options to whether start the minimum number of workers at pool initialization or not.
110 - Add `start()` method to pool API to start the minimum number of workers.
111 - Add `taskStealing` and `tasksStealingOnPressure` to tasks queue options to whether enable task stealing or not and whether enable tasks stealing under back pressure or not.
112 - Continuous internal benchmarking: [https://poolifier.github.io/benchmark-results/dev/bench](https://poolifier.github.io/benchmark-results/dev/bench).
114 ## [2.6.44] - 2023-09-08
118 - Use a dedicated PAT to publish on GitHub packages registry.
122 - Publish on GitHub packages registry on release.
126 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
128 ## [2.6.43] - 2023-09-08
132 - Publish on GitHub packages registry on release.
136 - Switch from rome to biome: [PR #1128](https://github.com/poolifier/poolifier/pull/1128).
138 ## [2.6.42] - 2023-09-06
142 - Optimize hot code paths implementation: avoid unnecessary branching, add and use optimized helpers (min, max), use reduce() array helper, ...
144 ## [2.6.41] - 2023-09-03
148 - Optimize worker choice strategies implementation.
150 ## [2.6.40] - 2023-09-01
154 - Do not pre-choose in WRR worker choice strategy to avoid bias.
155 - Avoid array out of bound in worker choice strategies after worker node removal.
157 ## [2.6.39] - 2023-08-30
161 - Fix race condition in worker choice strategies at worker node info querying while not yet initialized.
163 ## [2.6.38] - 2023-08-30
167 - Bundle typescript types declaration into one file.
171 - Improve interleaved weighted round robin worker choice strategy implementation.
173 ## [2.6.37] - 2023-08-28
177 - Ensure unused worker usage statistics are deleted at runtime.
181 - Rename worker choice strategy options `choiceRetries` to `retries`.
182 - Avoid unnecessary branching in worker choice strategies.
184 ## [2.6.36] - 2023-08-27
188 - Fix pool `execute()` arguments check.
192 - Make continuous tasks stealing algorithm less aggressive.
193 - Fine tune tasks stealing algorithm under back pressure.
195 ## [2.6.35] - 2023-08-25
199 - Don't account worker usage statistics for tasks that have failed.
200 - Fix pool information runtime and wait time median computation.
204 - Update simple moving average implementation to use a circular buffer.
205 - Update simple moving median implementation to use a circular buffer.
206 - Account for stolen tasks in worker usage statistics and pool information.
210 - Continuous tasks stealing algorithm.
212 ## [2.6.34] - 2023-08-24
216 - Avoid cascading tasks stealing under back pressure.
220 - Add fastpath to queued tasks rescheduling.
222 ## [2.6.33] - 2023-08-24
226 - Fix queued tasks rescheduling.
230 - Rename tasks queue options `queueMaxSize` to `size`.
234 - Task stealing scheduling algorithm if tasks queueing is enabled.
236 ## [2.6.32] - 2023-08-23
240 - Ensure no task can be executed when the pool is destroyed.
244 - Add `queueMaxSize` option to tasks queue options.
245 - Add O(1) deque implementation implemented with doubly linked list and use it for tasks queueing.
246 - Add tasks stealing algorithm when a worker node queue is back pressured if tasks queueing is enabled.
248 ## [2.6.31] - 2023-08-20
252 - Fix worker choice strategy retries mechanism in some edge cases.
256 - Make orthogonal worker choice strategies tasks distribution and created dynamic worker usage.
257 - Remove the experimental status of the `LEAST_ELU` worker choice strategy.
259 ## [2.6.30] - 2023-08-19
263 - Ensure pool event `backPressure` is emitted.
264 - Ensure pool event `full` is emitted only once.
265 - Ensure worker node cannot be instantiated without proper arguments.
267 ## [2.6.29] - 2023-08-18
271 - Fix race condition between ready and task functions worker message handling at startup.
272 - Fix duplicate task function worker usage statistics computation per task function.
273 - Update task function worker usage statistics if and only if there's at least two different task functions.
274 - Fix race condition at task function worker usage executing task computation leading to negative value.
278 - 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).
279 - Use back pressure detection in worker choice strategies.
280 - Add worker choice strategies retries mechanism if no worker is eligible.
282 ## [2.6.28] - 2023-08-16
286 - Ensure pool workers are properly initialized.
290 - HTTP server pool examples: express-cluster, express-hybrid.
294 - Remove now useless branching in worker hot code path.
296 ## [2.6.27] - 2023-08-15
300 - Add `KillHandler` type definition to exported types.
304 - Add `destroy` event to pool API.
306 ## [2.6.26] - 2023-08-15
310 - Add kill handler to worker options allowing to execute custom code when worker is killed.
311 - Add `listTaskFunctions()` method to pool API.
312 - SMTP client pool example: nodemailer.
314 ## [2.6.25] - 2023-08-13
318 - HTTP server pool examples: fastify-cluster, fastify-hybrid.
319 - WebSocket server pool examples: ws-cluster, ws-hybrid.
321 ## [2.6.24] - 2023-08-12
325 - Add array of transferable objects to the `execute()` method arguments.
326 - WebSocket server pool examples: ws-worker_threads.
328 ## [2.6.23] - 2023-08-11
332 - 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.
336 - HTTP client pool examples: fetch, node-fetch and axios with multiple task functions.
337 - HTTP server pool examples: express-worker_threads, fastify-worker_threads.
339 ## [2.6.22] - 2023-08-10
343 - Add missing `types` field to package.json `exports`.
347 - Structure markdown documentation (PR #811).
349 ## [2.6.21] - 2023-08-03
353 - Improve code documentation.
354 - Code refactoring and cleanup for better maintainability and readability.
356 ## [2.6.20] - 2023-07-21
360 - Fix queued tasks redistribution on error task execution starvation.
361 - Ensure tasks queueing per worker condition is untangled from the pool busyness semantic.
365 - Drastically reduce lookups by worker in the worker nodes.
367 ## [2.6.19] - 2023-07-20
371 - Dedicated internal communication channel for worker_threads pools.
373 ## [2.6.18] - 2023-07-19
377 - Code refactoring and cleanup for better maintainability and readability. Bundle size is a bit smaller.
379 ## [2.6.17] - 2023-07-16
383 - Add `listTaskFunctions()` method to worker API.
385 ## [2.6.16] - 2023-07-12
389 - Fix pool startup detection.
390 - Fix worker task functions handling.
392 ## [2.6.15] - 2023-07-11
396 - Take into account worker node readiness in worker choice strategies.
398 ## [2.6.14] - 2023-07-10
402 - Fix task function statistics tracking.
404 ## [2.6.13] - 2023-07-10
408 - Add per task function statistics tracking.
409 - Add public methods to manipulate the worker task functions at runtime.
411 ## [2.6.12] - 2023-07-09
415 - Workaround import issue with `node:os` module in node 16.x.x.
417 ## [2.6.11] - 2023-07-09
421 - Fix pool readiness semantic.
423 ## [2.6.10] - 2023-07-08
427 - Ensure workers are not recreated on error at pool startup.
431 - Add `ready` and `strategy` fields to pool information.
432 - Add pool event `ready` to notify when the number of workers created in the pool has reached the maximum size expected and are ready.
433 - Add dynamic pool sizing checks.
435 ## [2.6.9] - 2023-07-07
439 - Recreate the right worker type on uncaught exception.
443 - Add minimum and maximum to internal measurement statistics.
444 - Add `runTime` and `waitTime` to pool information.
445 - Check worker inactive time only on dynamic worker.
447 ## [2.6.8] - 2023-07-03
451 - Brown paper bag release to fix version handling in pool information.
453 ## [2.6.7] - 2023-07-03
457 - Ensure worker queued tasks at error are reassigned to other pool workers.
461 - Add pool `utilization` ratio to pool information.
462 - Add `version` to pool information.
463 - Add worker information to worker nodes.
465 ## [2.6.6] - 2023-07-01
469 - Add safe helper `availableParallelism()` to help sizing the pool.
473 - Ensure message handler is only registered in worker.
475 ## [2.6.5] - 2023-06-27
479 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
483 - Artificial version bump to 2.6.5 to workaround publication issue.
484 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
485 - Ensure pool event is emitted before task error promise rejection.
486 - Fix queued tasks count computation.
490 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
492 ## [2.6.4] - 2023-06-27
496 - Cluster pools tasks execution are not working by using ESM files extension: https://github.com/poolifier/poolifier/issues/782
500 - Ensure cluster pool `destroy()` gracefully shutdowns worker's server.
501 - Ensure pool event is emitted before task error promise rejection.
502 - Fix queued tasks count computation.
506 - Remove unneeded worker_threads worker `MessageChannel` internal usage for IPC.
508 ## [2.6.3] - 2023-06-19
512 - Ensure no tasks are queued when trying to soft kill a dynamic worker.
513 - Update strategies internals after statistics computation.
517 - Optimize O(1) queue implementation.
519 ## [2.6.2] - 2023-06-12
523 - Fix new worker use after creation in dynamic pool given the current worker choice strategy.
525 ## [2.6.1] - 2023-06-10
529 - Add worker choice strategy documentation: [README.md](./docs/worker-choice-strategies.md).
533 - Fix average statistics computation: ensure failed tasks are not accounted.
535 ## [2.6.0] - 2023-06-09
539 - Add `LEAST_ELU` worker choice strategy (experimental).
540 - Add tasks ELU instead of runtime support to `FAIR_SHARE` worker choice strategy.
544 - Refactor pool worker node usage internals.
545 - Breaking change: refactor worker choice strategy statistics requirements: the syntax of the worker choice strategy options has changed.
546 - Breaking change: pool information `info` property object fields have been renamed.
550 - Fix wait time accounting.
551 - Ensure worker choice strategy `LEAST_BUSY` accounts also tasks wait time.
552 - Ensure worker choice strategy `LEAST_USED` accounts also queued tasks.
554 ## [2.5.4] - 2023-06-07
558 - Add Event Loop Utilization (ELU) statistics to worker tasks usage.
562 - Compute statistics at the worker level only if needed.
563 - Add `worker_threads` options to thread pool options.
567 - Make the `LEAST_BUSY` strategy only relies on task runtime.
569 ## [2.5.3] - 2023-06-04
573 - Refine pool information content.
574 - Limit pool internals public exposure.
576 ## [2.5.2] - 2023-06-02
580 - Add `taskError` pool event for task execution error.
581 - Add pool information `info` property to pool.
582 - Emit pool information on `busy` and `full` pool events.
584 ## [2.5.1] - 2023-06-01
588 - Add pool option `restartWorkerOnError` to restart worker on uncaught error. Default to `true`.
589 - Add `error` pool event for uncaught worker error.
591 ## [2.5.0] - 2023-05-31
595 - Switch pool event emitter to `EventEmitterAsyncResource`.
596 - Add tasks wait time accounting in per worker tasks usage.
597 - Add interleaved weighted round robin `INTERLEAVED_WEIGHTED_ROUND_ROBIN` worker choice strategy (experimental).
601 - Renamed worker choice strategy `LESS_BUSY` to `LEAST_BUSY` and `LESS_USED` to `LEAST_USED`.
603 ## [2.4.14] - 2023-05-09
607 - Ensure no undefined task runtime can land in the tasks history.
608 - Fix median computation implementation once again.
612 - Unit tests for median and queue implementations.
614 ## [2.4.13] - 2023-05-08
618 - Fix worker choice strategy options validation.
619 - Fix fair share worker choice strategy internals update: ensure virtual task end timestamp is computed at task submission.
621 ## [2.4.12] - 2023-05-06
625 - Support multiple task functions per worker.
626 - Add custom worker weights support to worker choice strategies options.
630 - Use O(1) queue implementation for tasks queueing.
634 - Fix median computation implementation.
635 - Fix fair share worker choice strategy internals update.
637 ## [2.4.11] - 2023-04-23
641 - Optimize free worker finding in worker choice strategies.
643 ## [2.4.10] - 2023-04-15
647 - Fix typescript type definition for task function: ensure the input data is optional.
648 - Fix typescript type definition for pool execute(): ensure the input data is optional.
650 ## [2.4.9] - 2023-04-15
654 - Add tasks queue enablement runtime setter to pool.
655 - Add tasks queue options runtime setter to pool.
656 - Add worker choice strategy options runtime setter to pool.
660 - Remove the tasks queuing experimental status.
664 - Fix task function type definition and validation.
665 - Fix worker choice strategy options handling.
667 ## [2.4.8] - 2023-04-12
671 - Fix message between main worker and worker type definition for tasks.
672 - Fix code documentation.
674 ## [2.4.7] - 2023-04-11
678 - Add worker tasks queue options to pool options.
682 - Fix missing documentation.
684 ## [2.4.6] - 2023-04-10
688 - Ensure one task at a time is executed per worker with tasks queueing enabled.
689 - Properly count worker executing tasks with tasks queueing enabled.
691 ## [2.4.5] - 2023-04-09
695 - Use monotonic high resolution timer for worker tasks runtime.
696 - Add worker tasks median runtime to statistics.
697 - Add worker tasks queue (experimental).
699 ## [2.4.4] - 2023-04-07
703 - Add `PoolEvents` enumeration and `PoolEvent` type.
707 - Destroy worker only on alive check.
709 ## [2.4.3] - 2023-04-07
713 - Fix typedoc generation with inheritance.
715 ## [2.4.2] - 2023-04-06
719 - Add `full` event to dynamic pool.
720 - Keep worker choice strategy in memory for conditional reuse.
724 - Fix possible negative worker key at worker removal in worker choice strategies.
726 ## [2.4.1] - 2023-04-05
730 - Optimize worker choice strategy for dynamic pool.
734 - Ensure dynamic pool does not alter worker choice strategy expected behavior.
736 ## [2.4.0] - 2023-04-04
740 - Add `LESS_BUSY` worker choice strategy.
744 - Optimize worker storage in pool.
745 - Optimize worker alive status check.
746 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
747 - Optimize `LESS_USED` worker choice strategy.
748 - Update benchmark versus external threads pools.
749 - Optimize tasks usage statistics requirements for worker choice strategy.
753 - Ensure trimmable characters are checked at pool initialization.
754 - Fix message id integer overflow.
755 - Fix pool worker removal in worker choice strategy internals.
756 - Fix package publication with pnpm.
758 ## [2.4.0-3] - 2023-04-04
762 - Add `LESS_BUSY` worker choice strategy.
766 - Optimize worker storage in pool.
767 - Optimize worker alive status check.
768 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
769 - Optimize `LESS_USED` worker choice strategy.
770 - Update benchmark versus external threads pools.
774 - Ensure trimmable characters are checked at pool initialization.
775 - Fix message id integer overflow.
776 - Fix pool worker removal in worker choice strategy internals.
777 - Fix package publication with pnpm.
779 ## [2.4.0-2] - 2023-04-03
783 - Add `LESS_BUSY` worker choice strategy.
787 - Optimize worker storage in pool.
788 - Optimize worker alive status check.
789 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
790 - Optimize `LESS_USED` worker choice strategy.
794 - Ensure trimmable characters are checked at pool initialization.
795 - Fix message id integer overflow.
796 - Fix pool worker removal in worker choice strategy internals.
797 - Fix package publication with pnpm.
799 ## [2.4.0-1] - 2023-04-03
803 - Add `LESS_BUSY` worker choice strategy.
807 - Optimize worker storage in pool.
808 - Optimize worker alive status check.
809 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
810 - Optimize `LESS_USED` worker choice strategy.
814 - Ensure trimmable characters are checked at pool initialization.
815 - Fix message id integer overflow.
816 - Fix pool worker removal in worker choice strategy internals.
818 ## [2.4.0-0] - 2023-04-03
822 - Add `LESS_BUSY` worker choice strategy.
826 - Optimize worker storage in pool.
827 - Optimize worker alive status check.
828 - BREAKING CHANGE: Rename worker choice strategy `LESS_RECENTLY_USED` to `LESS_USED`.
829 - Optimize `LESS_USED` worker choice strategy.
833 - Ensure trimmable characters are checked at pool initialization.
834 - Fix message id integer overflow.
835 - Fix pool worker removal in worker choice strategy internals.
837 ## [2.3.10] - 2023-03-18
841 - Fix package.json `exports` syntax for ESM and CommonJS.
845 - Permit SemVer pre-release publication.
847 ## [2.3.10-2] - 2023-03-18
851 - Fix package.json `exports` syntax for ESM and CommonJS.
853 ## [2.3.10-1] - 2023-03-18
857 - Permit SemVer pre-release publication.
859 ## [2.3.10-0] - 2023-03-18
863 - Fix package.json `exports` syntax for ESM and CommonJS.
865 ## [2.3.9] - 2023-03-18
869 - Introduce ESM module support along with CommonJS one.
873 - Fix brown paper bag bug referencing the same object literal.
875 ## [2.3.8] - 2023-03-18
879 - Switch internal benchmarking code to benny.
880 - Switch to TypeScript 5.x.x.
881 - Switch rollup bundler plugins to core ones.
882 - Switch to TSDoc syntax.
883 - Enforce conventional commits.
887 - Fix random integer generator.
888 - Fix worker choice strategy pool type identification at initialization.
890 ## [2.3.7] - 2022-10-23
894 - Switch to open collective FOSS project funding platform.
895 - Switch to ts-standard linter configuration on TypeScript code.
899 - Fixed missing async on pool execute method.
900 - Fixed typing in TypeScript example.
901 - Fixed types in unit tests.
903 ## [2.3.6] - 2022-10-22
907 - Cleanup pool attributes and methods.
908 - Refine error types thrown.
912 - Fix continuous integration build on windows.
913 - Fix code coverage reporting by using c8 instead of nyc.
915 ## [2.3.5] - 2022-10-21
919 - Improve benchmarks: add IO intensive task workload, add task size option, integrate code into linter.
920 - Optimize tasks usage lookup implementation.
924 - Fix missed pool event emitter type export.
925 - Fix typedoc documentation generation.
927 ## [2.3.4] - 2022-10-17
931 - Fully automate release process with release-it.
935 - Optimize fair share task scheduling algorithm implementation.
936 - Update benchmark versus external pools results with latest version.
938 ## [2.3.3] - 2022-10-15
942 - Add support for [cluster settings](https://nodejs.org/api/cluster.html#cluster_cluster_settings) in cluster pool options.
944 ## [2.3.2] - 2022-10-14
948 - Optimize fair share worker selection strategy implementation.
952 - Fix WRR worker selection strategy: ensure the condition triggering the round robin can be fulfilled.
954 ## [2.3.1] - 2022-10-13
958 - Pool worker choice strategies:
959 - `WorkerChoiceStrategies.WEIGHTED_ROUND_ROBIN` strategy based on weighted round robin scheduling algorithm using tasks execution time for now.
960 - `WorkerChoiceStrategies.FAIR_SHARE` strategy based on fair share scheduling algorithm using tasks execution time for now.
962 ## [2.2.2] - 2022-10-09
966 - Fixed `README.md` file.
968 ## [2.2.1] - 2022-10-08
972 - Dynamic worker choice strategy change at runtime.
974 ## [2.2.0] - 2022-01-05
978 - Support only Node.js version 16.x.x for cluster pool: upstream cluster API have changed on that version.
980 ## [2.1.0] - 2021-08-29
984 - Add an optional pool option `messageHandler` to `PoolOptions<Worker>` for registering a message handler callback on each worker.
988 - `AbstractWorker` class `maxInactiveTime`, `killBehavior` and `async` attributes have been removed in favour of the same ones in the worker options `opts` public attribute.
989 - `AbstractWorker` class `lastTask` attribute have been renamed to `lastTaskTimestamp`.
990 - `AbstractWorker` class `interval` attribute have been renamed to `aliveInterval`.
991 - `AbstractWorker` class cannot be instantiated without specifying the `mainWorker` argument referencing the main worker.
993 ## [2.0.2] - 2021-05-12
997 - Fix `busy` event emission on fixed pool type
999 ## [2.0.1] - 2021-03-16
1003 - Check if pool options are properly set.
1004 - `busy` event is emitted on all pool types.
1006 ## [2.0.0] - 2021-03-01
1010 - Now a thread/process by default is not deleted when the task submitted take more time than maxInactiveTime configured (issue #70).
1012 ### Breaking Changes
1014 - `FullPool` event is now renamed to `busy`.
1015 - `maxInactiveTime` on `ThreadWorker` default behavior is now changed, if you want to keep the old behavior set `killBehavior` to `KillBehaviors.HARD`.
1016 _Find more details on our JSDoc._
1018 - `maxTasks` option on `FixedThreadPool` and `DynamicThreadPool` is now removed since is no more needed.
1020 - We changed some internal structures, but you shouldn't be too affected by them as these are internal changes.
1022 ### Pool options types declaration merge
1024 `FixedThreadPoolOptions` and `DynamicThreadPoolOptions` type declarations have been merged to `PoolOptions<Worker>`.
1026 #### New `export` strategy
1030 const DynamicThreadPool = require('poolifier/lib/dynamic')
1032 const { DynamicThreadPool } = require('poolifier/lib/dynamic')
1035 But you should always prefer just using
1038 const { DynamicThreadPool } = require('poolifier')
1041 #### New type definitions for input data and response
1043 For cluster worker and worker-thread pools, you can now only send and receive structured-cloneable data.
1044 _This is not a limitation by poolifier but Node.js._
1046 #### Public property replacements
1048 `numWorkers` property is now `numberOfWorkers`
1050 #### Internal (protected) properties and methods renaming
1052 These properties are not intended for end users
1054 - `id` => `nextMessageId`
1056 These methods are not intended for end users
1058 - `_chooseWorker` => `chooseWorker`
1059 - `_newWorker` => `createWorker`
1060 - `_execute` => `internalExecute`
1061 - `_chooseWorker` => `chooseWorker`
1062 - `_checkAlive` => `checkAlive`
1064 - `_runAsync` => `runAsync`
1066 ## [1.1.0] - 2020-05-21
1070 - ThreadWorker support async functions as option
1071 - Various external library patches
1073 ## [1.0.0] - 2020-01-24
1077 - FixedThreadPool implementation
1078 - DynamicThreadPool implementation
1079 - WorkerThread implementation to improve developer experience