VSCode ESLint integration not working

[wKovacs64]

What is the problem?

The introduction of .eslintrc in blitz-js/blitz#298 broke VSCode/ESLint integration (reproduced on multiple devices).

Steps to Reproduce:

Assuming you had ESLint working in VSCode previously...

1. Clone Blitz repo (current canary branch as of this issue being logged)
2. Install dependencies (yarn)
3. Open in VSCode
4. Open a file (e.g. packages/core/src/index.ts) and observe lint errors (e.g. Parsing error: The keyword 'export' is reserved)
5. Delete .eslintrc and the errors go away and integration is restored

Versions:

N/A

Supporting Documentation

The tsdx CLI supports merging .eslintrc.js (don't think it honors .eslintrc though), but that isn't enough for VSCode, which doesn't know to perform said merge (so it only looks at the config it finds, which in this case is missing things like the TS parser, etc.). The solution from tsdx is to "eject" the ESLint config if you need to extend it while retaining editor integration.