Improved message for used ports

lib/index.js

@@ -6,7 +6,6 @@ const micro = require('micro')
 const args = require('args')
 const compress = require('micro-compress')
 const detect = require('detect-port')
-const {grey} = require('chalk')
 
 // Ours
 const listening = require('./listening')
@@ -49,10 +48,18 @@ const server = flags.unzipped ? micro(handler) : micro(compress(handler))
 let port = flags.port
 
 detect(port).then(open => {
-  if (open !== port) {
+  let inUse = open !== port
+
+  if (inUse) {
     port = open
-    console.log(grey(`Port ${port} already in use, falling back to ${open}`))
+
+    inUse = {
+      old: flags.port,
+      open
+    }
   }
 
-  server.listen(port, async () => await listening(server, current))
+  server.listen(port, async () => {
+    return await listening(server, current, inUse)
+  })
 })

lib/listening.js

@@ -13,7 +13,7 @@ const copyToClipboard = async text => {
   }
 }
 
-module.exports = async (server, current) => {
+module.exports = async (server, current, inUse) => {
   const details = server.address()
   const ipAddress = ip.address()
   const url = `http://${ipAddress}:${details.port}`
@@ -30,6 +30,12 @@ module.exports = async (server, current) => {
 
   if (!process.env.NOW) {
     let message = chalk.green('Serving!')
+
+    if (inUse) {
+      message += ' ' + chalk.red(`(on port ${inUse.old},` +
+      ` because ${inUse.open} is already in use)`)
+    }
+
     message += '\n\n'
 
     const localURL = `http://localhost:${details.port}`