Run pwatch PID in background

Author: jkrup

README.md

@@ -40,7 +40,7 @@ Add `pwatch` at the end of your command.
 
       ${'$ pwatch 4030'.cyan}
 
-    – Run in background with a &
+    – Run a chained process in background with a &
 
       ${'$ sleep 10 | pwatch &'.cyan}
 ```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pwatch",
-  "version": "0.0.5",
+  "version": "0.0.6",
   "description": "Process Watcher",
   "main": "./index.js",
   "bin": {

src/checkPid.js

@@ -0,0 +1,11 @@
+import ps from 'ps-man';
+import notifier from 'node-notifier';
+
+export default function checkPid(pid, cb = () => { notifier.notify(`Process ${pid}: Completed`); }) {
+  ps.list({ pid }, (err, res) => {
+    if (res.length === 0) {
+      return cb();
+    }
+    return setTimeout(checkPid.bind(this, pid, cb), 1000);
+  });
+}

src/main.js

@@ -2,15 +2,7 @@ import tty from 'tty';
 import notifier from 'node-notifier';
 import ps from 'ps-man';
 import 'colors';
-
-function checkPid(pid, cb = () => { notifier.notify(`Process ${pid}: Completed`); }) {
-  ps.list({ pid }, (err, res) => {
-    if (res.length === 0) {
-      return cb();
-    }
-    return setTimeout(checkPid.bind(this, pid, cb), 1000);
-  });
-}
+import { spawn } from 'child_process';
 
 function handlePiped() {
   process.stdin.on('data', () => { }); // required so that readable is called on end
@@ -52,7 +44,7 @@ function help() {
 
       ${'$ pwatch 4030'.cyan}
 
-    ${'–'.grey} Run in background with a &
+    ${'–'.grey} Run a chained process in the background
 
       ${'$ sleep 10 | pwatch &'.cyan}
   `);
@@ -68,7 +60,11 @@ function handlePid(pid) {
   } else if (Number.isNaN(Number(pid))) {
     help();
   } else {
-    checkPid(pid);
+    // Run in BG
+    spawn('node', ['dist/runCheckPid.js', pid], {
+      stdio: 'ignore',
+      detached: true,
+    }).unref();
   }
 }
 

src/runCheckPid.js

@@ -0,0 +1,3 @@
+import checkPid from './checkPid';
+
+checkPid(process.argv[2]);