How to get Heroku to recognize a yarn.lock or package.json within a subdirectory (not root)

Question

I have a Rails application using React, Webpack, and Yarn for the client side. I have everything relating to the client side within the /client directory. This includes my yarn.

Answer 1

1. To use yarn to install your application's dependences

   a) yarn.lock should be present in root of the repo. yarn install b) package-lock.json should be removed git rm package-lock.json

2. To use npm

   a) yarn.lock should be removed

Source: https://devcenter.heroku.com/articles/ruby-support#installed-binaries

https://docs.npmjs.com/files/package-lock.json