From ea36173e8f472ef4b1dad3b397073c0f5b1efcf9 Mon Sep 17 00:00:00 2001
From: "JASSELETTE, Denis" <d.jasselette@evs.com>
Date: Tue, 18 Jul 2023 12:58:58 +0200
Subject: [PATCH] Resolve #49

---
 index.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/index.js b/index.js
index 584168b..6d7ccef 100644
--- a/index.js
+++ b/index.js
@@ -21,6 +21,7 @@ module.exports = function (port, method = 'tcp') {
         // The regex here will match only the local port column of the output
         const lineWithLocalPortRegEx = new RegExp(`^ *${method.toUpperCase()} *[^ ]*:${port}`, 'gm')
         const linesWithLocalPort = lines.filter(line => line.match(lineWithLocalPortRegEx))
+        if (!linesWithLocalPort.length) return Promise.reject(new Error('No process running on port'))
 
         const pids = linesWithLocalPort.reduce((acc, line) => {
           const match = line.match(/(\d*)\w*(\n|$)/gm)