X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Futils.ts;h=baaf1c1ca62499106a4ce0ea41148204dda75d2b;hb=b4213b7fc45201c5a38f2615289c569b679a15b7;hp=b1521c4cdfbddc0fda6b6b13293e51b082396692;hpb=6e9d10db05ac2bbc85373195a5c885d2492fee61;p=poolifier.git

diff --git a/src/utils.ts b/src/utils.ts
index b1521c4c..baaf1c1c 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -1,6 +1,50 @@
+import type { WorkerChoiceStrategyOptions } from './pools/selection-strategies/selection-strategies-types'
+
 /**
  * An intentional empty function.
  */
-export const EMPTY_FUNCTION: () => void = () => {
+export const EMPTY_FUNCTION: () => void = Object.freeze(() => {
   /* Intentionally empty */
+})
+
+/**
+ * Default worker choice strategy options.
+ */
+export const DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS: WorkerChoiceStrategyOptions =
+  {
+    medRunTime: false,
+    medWaitTime: false
+  }
+
+/**
+ * Compute the median of the given data set.
+ *
+ * @param dataSet - Data set.
+ * @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)
+  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]'