[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › Worker Typed, disposable worker and messaging primitives. ## Core | Name | Description | | ----------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------- | | [BroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/BroadcastChannel) | Typed, disposable BroadcastChannel. | | [MessageChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessageChannel) | Typed, disposable MessageChannel. | | [MessagePort](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessagePort) | Typed, disposable MessagePort. | | [SharedWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/SharedWorker) | Typed, disposable SharedWorker. | | [SharedWorkerSelf](https://evolu.dev/docs/api-reference/common/Worker/interfaces/SharedWorkerSelf) | Typed `self` for code running inside a shared worker. | | [Worker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/Worker) | Typed, disposable Worker. | | [WorkerSelf](https://evolu.dev/docs/api-reference/common/Worker/interfaces/WorkerSelf) | Typed `self` for code running inside a dedicated worker. | | [NativeMessagePort](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/NativeMessagePort) | Opaque type for platform-specific native MessagePort. | | [Transferable](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/Transferable) | Objects whose ownership can be transferred between threads via `postMessage`. | | [WorkerDeps](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/WorkerDeps) | Common dependencies for worker entry points. | ## Construction | Name | Description | | ------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------- | | [CreateBroadcastChannelDep](https://evolu.dev/docs/api-reference/common/Worker/interfaces/CreateBroadcastChannelDep) | Dependency wrapper for [CreateBroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateBroadcastChannel). | | [CreateMessageChannelDep](https://evolu.dev/docs/api-reference/common/Worker/interfaces/CreateMessageChannelDep) | Dependency wrapper for [CreateMessageChannel](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateMessageChannel). | | [CreateMessagePortDep](https://evolu.dev/docs/api-reference/common/Worker/interfaces/CreateMessagePortDep) | Dependency wrapper for [CreateMessagePort](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateMessagePort). | | [CreateBroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateBroadcastChannel) | Factory function to create a [BroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/BroadcastChannel). | | [CreateMessageChannel](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateMessageChannel) | Factory function to create a [MessageChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessageChannel). | | [CreateMessagePort](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateMessagePort) | Factory function to create a [MessagePort](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessagePort) from a native port. | | [createBroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/variables/createBroadcastChannel) | Creates an in-memory [BroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/BroadcastChannel). | | [createMessageChannel](https://evolu.dev/docs/api-reference/common/Worker/variables/createMessageChannel) | Creates an in-memory [MessageChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessageChannel). | | [createMessagePort](https://evolu.dev/docs/api-reference/common/Worker/variables/createMessagePort) | Creates an in-memory [MessagePort](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessagePort) from a native token. | | [createSharedWorker](https://evolu.dev/docs/api-reference/common/Worker/functions/createSharedWorker) | Creates an in-memory [SharedWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/SharedWorker). | | [createWorker](https://evolu.dev/docs/api-reference/common/Worker/functions/createWorker) | Creates an in-memory [Worker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/Worker). | ## Testing | Name | Description | | -------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ | | [TestBroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/TestBroadcastChannel) | [BroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/BroadcastChannel) with disposal tracking for testing. | | [TestMessageChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/TestMessageChannel) | [MessageChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessageChannel) with disposal tracking for testing. | | [TestSharedWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/TestSharedWorker) | Test [SharedWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/SharedWorker) with direct access to `self` and `connect`. | | [TestWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/TestWorker) | Test [Worker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/Worker) with access to its paired worker-side `self`. | | [testCreateMessagePort](https://evolu.dev/docs/api-reference/common/Worker/variables/testCreateMessagePort) | Creates an in-memory [CreateMessagePort](https://evolu.dev/docs/api-reference/common/Worker/type-aliases/CreateMessagePort) for testing. | | [testCreateBroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/functions/testCreateBroadcastChannel) | Creates an in-memory [BroadcastChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/BroadcastChannel) for testing. | | [testCreateMessageChannel](https://evolu.dev/docs/api-reference/common/Worker/functions/testCreateMessageChannel) | Creates an in-memory [MessageChannel](https://evolu.dev/docs/api-reference/common/Worker/interfaces/MessageChannel) for testing. | | [testCreateSharedWorker](https://evolu.dev/docs/api-reference/common/Worker/functions/testCreateSharedWorker) | Creates a connected [TestSharedWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/TestSharedWorker) for testing. | | [testCreateWorker](https://evolu.dev/docs/api-reference/common/Worker/functions/testCreateWorker) | Creates a connected [TestWorker](https://evolu.dev/docs/api-reference/common/Worker/interfaces/TestWorker) for testing. | | [testWaitForWorkerMessage](https://evolu.dev/docs/api-reference/common/Worker/functions/testWaitForWorkerMessage) | Waits until scheduled in-memory worker message delivery becomes idle. |