NB: MAYBE ONLY A ONE TIME THING. SEE 'REPRODUCIBLE DEMO' SECTION!

Bug report

When ugradingreact-scripts-ts from version2.4.0 to2.5.0+ the app wont start, because the filetsconfig.test.json is missing from the project. This is probably related to#115 that adds support for this file. However when upgradingreact-scripts-ts by bumping the version number inpackage.json and runningyarn install this file of course doesn't get created, and thus is missing.

Environment

1. npm ls react-scripts-ts: 2.6.0
2. node -v: 8.3.0
3. npm -v: 5.3.0
4. yarn --version: 0.27.5

Then, specify:

1. Operating system: macOS Sierra 10.12.5

Steps to Reproduce

1. Have version2.4.0 or below of react-scripts-ts installed and working in a project
2. Change react-scripts-ts to version2.5.0 or above inpackage.json
3. runyarn installornpm install
4. try to start app withyarn start

Expected Behavior

It should work

Actual Behavior

It crashes with an error saying thattsconfig.test.jsonis missing.

Reproducible Demo

Honestly I can't reproduce this. I fixed the problem, and when I tried to delete the file to reproduce the problem, the error wouldn't happen, and everything worked. yet I'm still reporting this, to see if others are having similar issues, or can reproduce it.

How To Fix This

For reference to others, this is how I fixed this issue:

1. Create a new file in the project root (next to thetsconfig.json file) calledtsconfig.test.json
2. Copy and paste the content of this file into the new file:https://github.com/nicolaserny/create-react-app-typescript/blob/master/packages/react-scripts/template/tsconfig.test.json
3. start the app, should work now.

If this indeed is a bug that many are experiencing I would suggest one of these steps:

a. Write a migration guide in the README.md that explains how to fix this error when upgrading.
b. Output a useful error message, explaining how to fix the issue, possibly with a link to this issue.
c. Automatically create the file if it doesn't exist when the app is started. (not sure this is even possible)