import * as os from 'node:os'
+import { webcrypto } from 'node:crypto'
import type {
MeasurementStatisticsRequirements,
WorkerChoiceStrategyOptions
return availableParallelism
}
-// /**
-// * Computes the retry delay in milliseconds using an exponential back off algorithm.
-// *
-// * @param retryNumber - The number of retries that have already been attempted
-// * @param maxDelayRatio - The maximum ratio of the delay that can be randomized
-// * @returns Delay in milliseconds
-// * @internal
-// */
-// export const exponentialDelay = (
-// retryNumber = 0,
-// maxDelayRatio = 0.2
-// ): number => {
-// const delay = Math.pow(2, retryNumber) * 100
-// const randomSum = delay * maxDelayRatio * Math.random() // 0-(maxDelayRatio*100)% of the delay
-// return delay + randomSum
-// }
+/**
+ * Sleeps for the given amount of milliseconds.
+ *
+ * @param ms - The amount of milliseconds to sleep.
+ * @returns A promise that resolves after the given amount of milliseconds.
+ */
+export const sleep = async (ms: number): Promise<void> => {
+ await new Promise((resolve) => {
+ setTimeout(resolve, ms)
+ })
+}
+
+/**
+ * Computes the retry delay in milliseconds using an exponential back off algorithm.
+ *
+ * @param retryNumber - The number of retries that have already been attempted
+ * @param delayFactor - The base delay factor in milliseconds
+ * @returns Delay in milliseconds
+ * @internal
+ */
+export const exponentialDelay = (
+ retryNumber = 0,
+ delayFactor = 100
+): number => {
+ const delay = Math.pow(2, retryNumber) * delayFactor
+ const randomSum = delay * 0.2 * secureRandom() // 0-20% of the delay
+ return delay + randomSum
+}
/**
* Computes the average of the given data set.
}
}
}
+
+/**
+ * Generate a cryptographically secure random number in the [0,1[ range
+ *
+ * @returns A number in the [0,1[ range
+ */
+export const secureRandom = (): number => {
+ return webcrypto.getRandomValues(new Uint32Array(1))[0] / 0x100000000
+}