Init

Author: jkrup

.babelrc

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+{
+  "presets": ["es2015"]
+}

.gitignore

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+__tests__
+dist
+node_modules

index.js

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+#! /usr/bin/env node
+require('./dist/main').default();

package.json

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+{
+  "name": "pwatch",
+  "version": "0.0.1",
+  "description": "Process Watcher",
+  "main": "./index.js",
+  "bin": {
+      "pwatch": "./index.js"
+  },
+  "scripts": {
+    "prepublish": "babel src --out-dir dist",
+    "watch": "babel -w src --out-dir dist",
+    "dev": "babel-node index.js",
+    "test": "jest"
+  },
+  "author": "Justin Krup",
+  "license": "ISC",
+  "devDependencies": {
+    "babel-cli": "^6.23.0",
+    "babel-preset-es2015": "^6.22.0",
+    "jest": "^18.1.0"
+  },
+  "dependencies": {
+    "node-notifier": "^5.0.2"
+  }
+}

src/main.js

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+import tty from 'tty';
+import { exec } from 'child_process';
+import notifier from 'node-notifier';
+
+function checkPid(pid, cb = function() { notifier.notify(`Process ${pid}: Completed`) }) {
+    exec(`ps ${pid}`, (error, stdout, stderr) => {
+        if (error) {
+            return cb();
+        }
+        setTimeout(checkPid.bind(this, pid, cb), 1000);
+    });
+}
+
+function handlePiped() {
+    process.stdin.on('data', () => { }); // required so that readable is called on end
+    process.stdin.on('end', () => {
+        notifier.notify(`Process Completed`);
+    });
+}
+
+function handlePid(pid) {
+    if (!pid) {
+        console.error('No pid specified');
+        process.exit(1);
+    }
+    checkPid(pid);
+}
+
+
+export default function main() {
+    const isCalledViaPipe = !tty.isatty();
+    if (isCalledViaPipe) {
+        handlePiped();
+    } else {
+        handlePid(process.argv[2])
+    }
+}
+