Merge branch 'master' into waittime

[poolifier.git] / src / utils.ts

diff --git a/src/utils.ts b/src/utils.ts
index 1d7f81d2d19fb41397a5ecdcbacde6d2d5076dd0..baaf1c1ca62499106a4ce0ea41148204dda75d2b 100644 (file)
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,6 +1,4 @@
-import { CircularArray } from './circular-array'
 import type { WorkerChoiceStrategyOptions } from './pools/selection-strategies/selection-strategies-types'
-import type { TasksUsage } from './pools/worker'
 
 /**
  * An intentional empty function.
@@ -9,25 +7,13 @@ export const EMPTY_FUNCTION: () => void = Object.freeze(() => {
   /* Intentionally empty */
 })
 
-/**
- * Initial tasks usage statistics.
- */
-export const INITIAL_TASKS_USAGE: TasksUsage = {
-  run: 0,
-  running: 0,
-  runTime: 0,
-  runTimeHistory: new CircularArray(),
-  avgRunTime: 0,
-  medRunTime: 0,
-  error: 0
-}
-
 /**
  * Default worker choice strategy options.
  */
 export const DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS: WorkerChoiceStrategyOptions =
   {
-    medRunTime: false
+    medRunTime: false,
+    medWaitTime: false
   }
 
 /**
@@ -37,13 +23,28 @@ export const DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS: WorkerChoiceStrategyOptions
  * @returns The median of the given data set.
  */
 export const median = (dataSet: number[]): number => {
+  if (Array.isArray(dataSet) && dataSet.length === 0) {
+    return 0
+  }
   if (Array.isArray(dataSet) && dataSet.length === 1) {
     return dataSet[0]
   }
   const sortedDataSet = dataSet.slice().sort((a, b) => a - b)
-  const middleIndex = Math.floor(sortedDataSet.length / 2)
-  if (sortedDataSet.length % 2 === 0) {
-    return sortedDataSet[middleIndex / 2]
-  }
-  return (sortedDataSet[middleIndex - 1] + sortedDataSet[middleIndex]) / 2
+  return (
+    (sortedDataSet[(sortedDataSet.length - 1) >> 1] +
+      sortedDataSet[sortedDataSet.length >> 1]) /
+    2
+  )
 }
+
+/**
+ * Is the given object a plain object?
+ *
+ * @param obj - The object to check.
+ * @returns `true` if the given object is a plain object, `false` otherwise.
+ */
+export const isPlainObject = (obj: unknown): boolean =>
+  typeof obj === 'object' &&
+  obj !== null &&
+  obj?.constructor === Object &&
+  Object.prototype.toString.call(obj) === '[object Object]'