7a1c9eb17e
This PR introduces an improved developer experience when `next lint` is run for the first time. ### Current behavior `eslint-config-next` is a required package that must be installed before proceeding with `next lint` or `next build`:  Although this has helped many developers start using the new ESLint config, this has also resulted in a few issues: - Users are required to install the full config (`eslint-config-next`) even if they do not use it or use the Next.js plugin directly (`eslint-plugin-next`). - #26348 - There's some confusion on why `eslint-config-next` needs to be installed or how it should be used instead of `eslint-plugin-next`. - #26574 - #26475 - #26438 ### New behavior Instead of enforcing `eslint-config-next` as a required package, this PR prompts the user by asking what config they would like to start. This happens when `next lint` is run for the first time **and** if no ESLint configuration is detected in the application. <img src="https://user-images.githubusercontent.com/12476932/124331177-e1668a80-db5c-11eb-8915-38d3dc20f5d4.gif" width="800" /> - The CLI will take care of installing `eslint` or `eslint-config-next` if either is not already installed - Users now have the option to choose between a strict configuration (`next/core-web-vitals`) or just the base configuration (`next`) - For users that decide to create their own ESLint configuration, or already have an existing one, **installing `eslint-config-next` will not be a requirement for `next lint` or `next build` to run**. A warning message will just show if the Next.js ESLint plugin is not detected in an ESLint config. <img width="682" alt="Screen Shot 2021-06-25 at 3 02 12 PM" src="https://user-images.githubusercontent.com/12476932/123473329-6cc4a680-d5c6-11eb-9a57-d5c0b89a2732.png"> --- In addition, this PR also: - Fixes #26348 - Updates documentation to make it more clear what approach to take for new and existing ESLint configurations |
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| .. | ||
| next-build.ts | ||
| next-dev.ts | ||
| next-export.ts | ||
| next-lint.ts | ||
| next-start.ts | ||
| next-telemetry.ts | ||
