Ionic serve throwing npm error

Im running a sample app, and I am getting the following error,

25 error Failed at the ionic-hello-world@ ionic:serve script ‘ionic-app-scripts serve “–v2” “–address” “” “–port” “8100” “–livereload-port” “35729”’.
25 error Make sure you have the latest version of node.js and npm installed.
25 error If you do, this is most likely a problem with the ionic-hello-world package,
25 error not with npm itself.
25 error Tell the author that this fails on your system:
25 error ionic-app-scripts serve “–v2” “–address” “” “–port” “8100” “–livereload-port” “35729”

I have the latest npm installed.

ionic info output please.

Cordova CLI: Not installed
Ionic CLI Version: 2.2.3
Ionic App Lib Version: 2.2.1
ios-deploy version: Not installed
ios-sim version: Not installed
OS: macOS Sierra
Node Version: v6.2.1
Xcode version: Not installed

Then package.json content please.

  "name": "ionic-hello-world",
  "author": "Ionic Framework",
  "homepage": "",
  "private": true,
  "scripts": {
    "build": "ionic-app-scripts build",
    "clean": "ionic-app-scripts clean",
    "ionic:build": "ionic-app-scripts build",
    "ionic:serve": "ionic-app-scripts serve"
  "engines": {
    "node": "6.9.2"
  "dependencies": {
    "@angular/common": "4.0.2",
    "@angular/compiler": "4.0.2",
    "@angular/compiler-cli": "4.0.2",
    "@angular/core": "4.0.2",
    "@angular/forms": "4.0.2",
    "@angular/http": "4.0.2",
    "@angular/platform-browser": "4.0.2",
    "@angular/platform-browser-dynamic": "4.0.2",
    "@ionic/storage": "2.0.1",
    "ionic-angular": "3.1.1",
    "ionic-native": "2.4.1",
    "ionicons": "3.0.0",
    "rxjs": "5.1.1",
    "sw-toolbox": "3.6.0",
    "zone.js": "0.8.5"
  "devDependencies": {
    "@ionic/app-scripts": "1.3.5",
    "typescript": "2.2.1"
  "cordovaPlugins": [
  "cordovaPlatforms": [
      "platform": "ios",
      "version": "",
      "locator": "ios"
  "description": "ionic-preview-app: An Ionic project"

There is a 1.3.7 of that now, you could try updating to that.

I did that, but still getting the same error. Do I need to re-build the environment?

It doesn’t appear that you have Cordova installed, or at least the CLI seems to think so.

Have you installed Cordova?

Not relevant for ionic serve, see his topic title.

Not really. Can you show us the version of your node and npm please, just to be sure?
Did you try with an older version, LTS maybe?

Run following commands:

  1. npm install -g cordova ionic
  2. ionic start myApp tabs
  3. cd myApp
  4. ionic serve

This will setup your project from scratch and then you can take over from there.

npm version 4.5.0. I did not try with the older version

Why is your node 6.9 here but just 6.2 in “real life”? Also it should be at least 6.10 now. But there seems to be a disconnect between your dependencies and your actual installation. When was the last time you ran npm install?

1 Like

I ran it day before yesterday

I did this now, but still i face the same error. the weird part is , it was working well in the morning and I did not make any changes but it stopped all of a sudden since then I get the above error.

Have you restarted your computer?

yup, I did restart my system.