Why do I obtain this error when deploying app to Heroku?

git heroku npm npm-scripts npm-start

You have to inform heroku where to start : missing script: start. In your package.json, you should have something like this:

"scripts": {  "start": "node index.js"}

Where index.js is your entry point.

As an alternative, you can specify in Procfile:

web: node index.js

git heroku npm npm-scripts npm-start

My silly mistake was that I was pushing the master branch to Heroku while my changes were in another branch!

Make sure that you merge your latest branch with your master branch first

> git checkout master> git merge your-latest-branch> git push heroku master

git heroku npm npm-scripts npm-start

In my case, changing this:

"scripts": {     "test": "echo \"Error: no test specified\" && exit 1"    },

to this:

"scripts": {   "start": "node app.js"    },

was the solution

CodeHunter