| 1 | import chalk from 'chalk' |
| 2 | import { getRandomValues } from 'node:crypto' |
| 3 | |
| 4 | export const sleep = async (milliSeconds: number): Promise<NodeJS.Timeout> => { |
| 5 | return await new Promise<NodeJS.Timeout>(resolve => |
| 6 | setTimeout(resolve as () => void, milliSeconds) |
| 7 | ) |
| 8 | } |
| 9 | |
| 10 | export const defaultExitHandler = (code: number): void => { |
| 11 | if (code === 0) { |
| 12 | console.info(chalk.green('Worker exited successfully')) |
| 13 | } else if (code === 1) { |
| 14 | console.info(chalk.green('Worker terminated successfully')) |
| 15 | } else if (code > 1) { |
| 16 | console.error(chalk.red(`Worker exited with exit code: ${code.toString()}`)) |
| 17 | } |
| 18 | } |
| 19 | |
| 20 | export const defaultErrorHandler = (error: Error): void => { |
| 21 | console.error(chalk.red('Worker errored: '), error) |
| 22 | } |
| 23 | |
| 24 | export const randomizeDelay = (delay: number): number => { |
| 25 | const random = secureRandom() |
| 26 | const sign = random < 0.5 ? -1 : 1 |
| 27 | const randomSum = delay * 0.2 * random // 0-20% of the delay |
| 28 | return delay + sign * randomSum |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * Generates a cryptographically secure random number in the [0,1[ range |
| 33 | * @returns A number in the [0,1[ range |
| 34 | * @internal |
| 35 | */ |
| 36 | const secureRandom = (): number => { |
| 37 | return getRandomValues(new Uint32Array(1))[0] / 0x100000000 |
| 38 | } |