# CHANGELOG


## X.X.X (comming soon)

## 7.3.0 (20 January 2026)

- FIX `unhandledRejection` thrown when `leader.die()` is called while a call to `awaitLeadership()` is still running.


## 7.2.0 (27 October 2025)

- fix(leader-election-web-lock): rethrow WebLocks acquisition errors to avoid stuck leader election [#1360](https://github.com/pubkey/broadcast-channel/pull/1360)

## 7.0.0 (27 November 2023)

- CHANGE do not emit messages that have been existed before the channel was created.

## 6.0.0 (30 October 2023)

- ADD support for the Deno runtime

## 5.5.1 (23 October 2023)

- REPLACE `new Date().getTime()` with `Date.now()` which is faster

## 5.5.0 (17 October 2023)

- Add `sideEffects: false`
## 5.4.0 (10 October 2023)

- FIX import of `p-queue` throws `is not a constructor`

## 5.3.0 (18 August 2023)

https://github.com/pubkey/broadcast-channel/pull/1243

## 5.2.0 (11 August 2023)
https://github.com/pubkey/broadcast-channel/pull/1237

## 5.1.0 (25 April 2023)

- REFACTOR check for native method [#1157](https://github.com/pubkey/broadcast-channel/pull/1157)

## 5.0.1 (23 March 2023)

- FIX hasLeader() is mixing up states

## 5.0.0 (23 March 2023)

- Use [Web Locks API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Locks_API) for leader election if possible.
- `LeaderElector.hasLeader` is now a function that returns a `Promise<boolean>`.

## 4.20.1 (6 January 2023)

- FIX exports order

## 4.20.0 (6 January 2023)

- FIX typings did not work with `"moduleResolution": "NodeNext"`

## 4.19.0 (28 December 2022)

- Updated dependencies

## 4.18.1 (31 October 2022)

- Updated dependencies

## 4.18.0 (6 October 2022)


- FIX fix(indexedDB): Can't start a transaction on a closed database [#1042](https://github.com/pubkey/broadcast-channel/pull/1042) [nabigraphics](https://github.com/nabigraphics)


## 4.17.0 (13 September 2022)

- REMOVE the `isNode` utility function so that we do not access the `process` variable in browsers.

## 4.16.0 (13 September 2022)

- Rerelase because npm got stuck
## 4.15.0 (13 September 2022)

- Remove `microtime` dependency [https://github.com/pubkey/broadcast-channel/pull/1036](#1036) [jaredperreault-okta](https://github.com/jaredperreault-okta)

## 4.14.0 (18 Juli June 2022)

- Updated dependencies.

## 4.13.0 (1 June 2022)

- FIX ES module for Node.js [#972](https://github.com/pubkey/broadcast-channel/pull/972)

## 4.12.0 (25 May 2022)

- FIX ES module for Node.js Thanks [denysoblohin-okta](https://github.com/denysoblohin-okta)

## 4.11.0 (12 April 2022)

- Replaced `nano-time` with `microtime`.
- Improve IndexedDB method performance.

## 4.10.0 (3 February 2022)

- Improve error message when calling `postMessage` to a closed channel.

## 4.9.0 (23 December 2021)

Bugfixes:
  - When listening to messages directly, responses that where send directly after `addEventListener()` where missing because of inaccurate JavaScript timing.

## 4.8.0 (15 December 2021)

Changes:
  - Better determine the correct `responseTime` to use to make it less likely to elect duplicate leaders.

## 4.7.1 (13 December 2021)

Bugfixes:
  - Remove useless log at leader election fallback interval.

## 4.7.0 (3 December 2021)

Bugfixes:
  - Prevent `EMFILE, too many open files` error when writing many messages at once.

## 4.6.0 (2 December 2021)

Other:
  - Added `broadcastChannel.id()` for debugging

Bugfixes:
  - Refactor `applyOnce()` queue to ensure we do not run more often then needed.

## 4.5.0 (5 November 2021)

Bugfixes:
  - Running `applyOnce()` in a loop must not fully block the JavaScript process.

## 4.4.0 (2 November 2021)

Other:
  - Replaced `js-sha` with node's `crypto` module.

## 4.3.1 (30 October 2021)

Bugfixes:
  - Fixed broken promise rejection.

## 4.3.0 (30 October 2021)

Features:
  - Added `LeaderElector.hasLeader`
  - Added `LeaderElector.broadcastChannel`

## 4.2.0 (3 August 2021)

Bugfixes:
  - Fixed Webpack 5 Relative Import Support. Thanks [catrielmuller](https://github.com/catrielmuller)
## 4.1.0 (2 August 2021)

Bugfixes:
  - Fixed various problems with the module loading. Thanks [benmccann](https://github.com/benmccann) and [chbdetta](https://github.com/chbdetta)


## 4.0.0 (15 July 2021)

Other:
  - Changed entrypoints and method-choosing [#679](https://github.com/pubkey/broadcast-channel/pull/679). Thanks [benmccann](https://github.com/benmccann)

## 3.7.0 (13 June 2021)

Other:
  - Moved `ObliviousSet` into [its own npm module](https://www.npmjs.com/package/oblivious-set)

## 3.6.0 (19 May 2021)

Features:
  - Added `BroadcastChannel.isClosed` [#544](https://github.com/pubkey/broadcast-channel/issues/544)

Other:
  - Updated dependencies to work with newer node versions

## 3.5.3 (11 March 2021)

Bugfixes:
  - Fixed broken typings

## 3.5.2 (11 March 2021)

Bugfixes:
  - `BroadcastChannel.close()` waits for all ongoing message sending to be finished before resolving.

## 3.5.0 (11 March 2021)

Features:
  - Added `LeaderElector.onduplicate`

## 3.4.0 (24 January 2021)

Bugfixes:
  - fix cursor error in Safari [#420](https://github.com/pubkey/broadcast-channel/pull/420)

## 3.3.0 (20 October 2020)

Bugfixes:
  - `new BroadcastChannel().close()` should not resolve before all cleanup is done  [#348](https://github.com/pubkey/broadcast-channel/pull/348)