pid-port

Get the ID of the process that uses a certain port

Install

npm install pid-port

Usage

import {portToPid} from 'pid-port';

try {
	console.log(await portToPid(8080));
	//=> 1337

	const pids = await portToPid([8080, 22]);

	console.log(pids.get(8080));
	//=> 1337

	console.log(pids.get(22));
	//=> 12345
} catch (error) {
	console.log(error);
	//=> 'Could not find a process that uses port `8080`'
}

API

portToPid(port)

Get the process ID for a port.

Returns a Promise<number | undefined> (integer) with the process ID.

port

Type: number (integer)

The port to look up.

portToPid(ports)

Get the process IDs for multiple ports.

Returns a Promise<Map<number, number>> (integer) with the port as key and the process ID as value.

ports

Type: number[] (integer)

The ports to look up.

pidToPorts(pid)

Get the ports for a process ID.

Returns a Promise<Set<number>> with the ports.

pid

Type: number

The process ID to look up.

pidToPorts(pids)

Get the ports for multiple process IDs.

Returns a Promise<Map<number, Set<number>>> with the process ID as the key and the ports as value.

pids

Type: number[]

The process IDs to look up.

allPortsWithPid()

Get all ports with their process ID.

Returns a Promise<Map<number, number>> (integer) with the port as key and the process ID as value.

Related

• fkill-cli - Uses this package to let you kill the process that occupies a certain port
• pid-cwd - Find the working directory of a process from its process ID