Eslint config upgrade

[rexkenley]

It seems like the new 19.2 is using the new eslint.config.js

Is there a guide on how to upgrade from the old .eslintrc to the new eslint.config.js? Where is eslint.config.js located? I don't see that file after the upgrade.

Update: My bad, nx 19.2 is still using eslint 8. So I need some guidance on how to upgrade to eslint 9. But I did see this issue.
#22576

[KeithGillette]

Also seeking guidance on upgrading an Nx (20.3.0) monorepo (with multiple applications and libraries and multiple ESLint plugins) to the new flat configuration file format and from ESLint 8 to 9. The @nx/eslint:convert-to-flat-config generator has not produced a working configuration (and does not modify project-level .eslintrc.json files) and my attempts to start from scratch updating the workspace to ESLint 9 have all met with one error or another.

[scottrepreneur]

Were you able to resolve this? Will give it another go

Ah looks like this was mentioned in #22576 at this comment. Became available in 20.4
https://github.com/nrwl/nx/releases/tag/20.4.0

[rexkenley]

https://eslint.org/blog/2024/05/eslint-configuration-migrator/