-import type { Worker as ClusterWorker } from 'node:cluster'
-import type { MessagePort } from 'node:worker_threads'
+import type { EventLoopUtilization } from 'node:perf_hooks'
import type { KillBehavior } from './worker/worker-options'
import type { IWorker, Task } from './pools/worker'
/**
- * Make all properties in T non-readonly.
+ * Task error.
+ *
+ * @typeParam Data - Type of data sent to the worker triggering an error. This can only be structured-cloneable data.
*/
-export type Draft<T> = { -readonly [P in keyof T]?: T[P] }
+export interface TaskError<Data = unknown> {
+ /**
+ * Error message.
+ */
+ message: string
+ /**
+ * Data passed to the worker triggering the error.
+ */
+ data?: Data
+}
+
+/**
+ * Task performance.
+ */
+export interface TaskPerformance {
+ /**
+ * Task performance timestamp.
+ */
+ timestamp: number
+ /**
+ * Task runtime.
+ */
+ runTime?: number
+ /**
+ * Task event loop utilization.
+ */
+ elu?: EventLoopUtilization
+}
+
+/**
+ * Performance statistics computation.
+ */
+export interface WorkerStatistics {
+ runTime: boolean
+ elu: boolean
+}
/**
* Message object that is passed between main worker and worker.
*
- * @typeParam Data - Type of data sent to the worker. This can only be serializable data.
- * @typeParam MainWorker - Type of main worker.
+ * @typeParam Data - Type of data sent to the worker or execution response. This can only be structured-cloneable data.
+ * @typeParam ErrorData - Type of data sent to the worker triggering an error. This can only be structured-cloneable data.
+ * @internal
*/
-export interface MessageValue<
- Data = unknown,
- MainWorker extends ClusterWorker | MessagePort | unknown = unknown
-> extends Task<Data> {
+export interface MessageValue<Data = unknown, ErrorData = unknown>
+ extends Task<Data> {
/**
* Kill code.
*/
readonly kill?: KillBehavior | 1
/**
- * Error.
+ * Task error.
*/
- readonly error?: string
+ readonly taskError?: TaskError<ErrorData>
/**
- * Runtime.
+ * Task performance.
*/
- readonly runTime?: number
+ readonly taskPerformance?: TaskPerformance
/**
- * Reference to main worker.
- *
- * Only for internal use.
- * @internal
+ * Whether the worker computes the given statistics or not.
*/
- readonly parent?: MainWorker
+ readonly statistics?: WorkerStatistics
}
/**
* An object holding the execution response promise resolve/reject callbacks.
*
* @typeParam Worker - Type of worker.
- * @typeParam Response - Type of execution response. This can only be serializable data.
+ * @typeParam Response - Type of execution response. This can only be structured-cloneable data.
* @internal
*/
export interface PromiseResponseWrapper<