-import type { Server } from 'http'
-import type { AddressInfo } from 'net'
-import { ClusterWorker } from 'poolifier'
+import type { Server } from 'node:http'
+import type { AddressInfo } from 'node:net'
+
import express, { type Express, type Request, type Response } from 'express'
-import { type WorkerData, type WorkerResponse } from './types.js'
+import { ClusterWorker } from 'poolifier'
-const factorial: (n: number) => number = n => {
- if (n === 0) {
- return 1
- }
- return factorial(n - 1) * n
-}
+import type { WorkerData, WorkerResponse } from './types.js'
class ExpressWorker extends ClusterWorker<WorkerData, WorkerResponse> {
private static server: Server
+ private static readonly factorial = (n: number | bigint): bigint => {
+ if (n === 0 || n === 1) {
+ return 1n
+ } else {
+ n = BigInt(n)
+ let factorial = 1n
+ for (let i = 1n; i <= n; i++) {
+ factorial *= i
+ }
+ return factorial
+ }
+ }
+
private static readonly startExpress = (
workerData?: WorkerData
): WorkerResponse => {
- const { port } = workerData as WorkerData
+ const { port } = workerData!
const application: Express = express()
application.get('/api/factorial/:number', (req: Request, res: Response) => {
const { number } = req.params
- res.send({ number: factorial(parseInt(number)) }).end()
+ res
+ .send({ number: ExpressWorker.factorial(parseInt(number)).toString() })
+ .end()
})
+ let listenerPort: number | undefined
ExpressWorker.server = application.listen(port, () => {
+ listenerPort = (ExpressWorker.server.address() as AddressInfo).port
console.info(
- // eslint-disable-next-line @typescript-eslint/restrict-template-expressions
- `⚡️[express server]: Express server is started in cluster worker at http://localhost:${port}/`
+ `⚡️[express server]: Express server is started in cluster worker at http://localhost:${listenerPort}/`
)
})
return {
status: true,
- port: (ExpressWorker.server.address() as AddressInfo)?.port ?? port
+ port: listenerPort ?? port
}
}