Node.js now installs `devDependencies` by default
Change effective on 01 March 2018
Many users getting started with Node.js on Heroku run a
build step with
ng-cli, or another build tool
only to find that it’s in their
therefore not installed by default on Heroku.
We’ve updated the default behavior to install all
dependencies listed in
package.json during build, and to
strip out the developer dependencies before the app is
Visit Dev Center to learn how you can customize this behavior
You will see a new section in your logs where we prune the
$ git push heroku master ... -----> Pruning devDependencies removed 24 packages in 0.241s ...