I am getting error in eslint. I tried searching for solutions but couldn't find any. Can anyone help
80.57 Linting and checking validity of types ...
115.9 Failed to compile.
115.9
115.9 .eslintrc.cjs:8:13
115.9 Type error: Type 'string' has no properties in common with type 'Plugin'.
115.9
115.9 6 | tsconfigRootDir: __dirname,
115.9 7 | },
115.9 > 8 | plugins: ["@typescript-eslint"],
115.9 | ^
115.9 9 | extends: [
115.9 10 | "next/core-web-vitals",
115.9 11 | "plugin:@typescript-eslint/recommended",
5 Replies
You seem to be using
@types/eslint v9. Next currently doesn't supports eslint v9
https://github.com/vercel/next.js/issues/64409GitHub
next-lint Doesn't Support ESLint 9 · Issue #64409 · vercel/next.js
Link to the code that reproduces this issue https://codesandbox.io/p/devbox/vigilant-pine-6wmz8y To Reproduce Add next lint script to package.json per https://nextjs.org/docs/app/building-your-appl...
even specifying eslint version to 8.57 gives the same error
How do you declare types for .eslintrc.cjs?
I'm running into the same issue and this thread is the only thing I was able to find. The open issue has since been resolved and eslint 9 is now compatible with nextjs 15. Did anyone else run into this issue?
I found a solution and add it here, as this is the only search result for this error:
I switched the type from
/** @type {import("eslint").Linter.Config} */ in the .eslintrc.cjs to:
/** @type {import("@typescript-eslint/utils/ts-eslint").ClassicConfig.Config} */, to explicitly tell it to use the classic config the Create T3 App is still using.
I won't open a issue for this though, as there is already an issue open to switch to the new flat config anyway (https://github.com/t3-oss/create-t3-app/issues/1955), but until then this might help people using Create T3 App that want to use NextJS 15 with ESlint 9.You could see about potentially downgrading versions? Not sure if anyone has suggested that yet, but seeing as how Next doesn’t support that current version of ESLint, that would be a quick way to unblock yourself