Broken next-lint-to-eslint-cli codemod #85679
Description
Link to the code that reproduces this issue
https://github.com/Git-I985/next-lint-to-eslint-cli-codemod-issue
To Reproduce
- Install dependencies (
npm installor whatever). - Run
npx @next/codemod@canary next-lint-to-eslint-cliaccording to docs - On step
✔ On which files or directory should the codemods be applied? …type.(dot, current folder)
Current vs. Expected behavior
Current behavior
I get the following errors
Migrating from next lint to the ESLint CLI...
Found legacy ESLint config: .eslintrc.cjs
Running "npx @eslint/migrate-config /Users/xxx/Code/next-lint-to-eslint-cli-codemod-issue/.eslintrc.cjs" to convert legacy config...
/Users/xxx/.npm/_npx/6a090669e21b4303/node_modules/@next/codemod/transforms/next-lint-to-eslint-cli.js:855
throw new Error(`Failed to run "${command}" to migrate the legacy ESLint config "${eslintConfigFilename}".\n` +
^
Error: Failed to run "npx @eslint/migrate-config /Users/xxx/Code/next-lint-to-eslint-cli-codemod-issue/.eslintrc.cjs" to migrate the legacy ESLint config ".eslintrc.cjs".
Please try the migration to Flat config manually.
Learn more: https://eslint.org/docs/latest/use/configure/migration-guide
at Object.transformer [as default] (/Users/xxx/.npm/_npx/6a090669e21b4303/node_modules/@next/codemod/transforms/next-lint-to-eslint-cli.js:855:23)
at Command.runTransform (/Users/xxx/.npm/_npx/6a090669e21b4303/node_modules/@next/codemod/bin/transform.js:83:48)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5) {
[cause]: Error: Failed to find the expected output file "/Users/xxx/Code/next-lint-to-eslint-cli-codemod-issue/eslint.config.mjs" generated by the migration tool.
at Object.transformer [as default] (/Users/xxx/.npm/_npx/6a090669e21b4303/node_modules/@next/codemod/transforms/next-lint-to-eslint-cli.js:847:27)
at Command.runTransform (/Users/xxx/.npm/_npx/6a090669e21b4303/node_modules/@next/codemod/bin/transform.js:83:48)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
}
Node.js v22.17.0Expected behavior
I shouldn’t receive this error
Provide environment information
Operating System:
Platform: darwin
Arch: arm64
Version: Darwin Kernel Version 24.6.0: Mon Jul 14 11:30:40 PDT 2025; root:xnu-11417.140.69~1/RELEASE_ARM64_T6041
Available memory (MB): 49152
Available CPU cores: 12
Binaries:
Node: 22.17.0
npm: 10.9.2
Yarn: N/A
pnpm: 9.11.0
Relevant Packages:
next: 16.0.1 // Latest available version is detected (16.0.1).
eslint-config-next: N/A
react: 19.2.0
react-dom: 19.2.0
typescript: 5.9.3
Next.js Config:
output: N/AWhich area(s) are affected? (Select all that apply)
Instrumentation, Linting, Not sure
Which stage(s) are affected? (Select all that apply)
next dev (local)
Additional context
- My
.eslintrc.cjshttps://github.com/Git-I985/next-lint-to-eslint-cli-codemod-issue/blob/main/.eslintrc.cjs - Same with
@next/codemod@latest - Such
eslint.config.cjsis generated although with an error (below)
Show generated config
const {
defineConfig,
globalIgnores,
} = require("eslint/config");
const {
fixupConfigRules,
fixupPluginRules,
} = require("@eslint/compat");
const tsParser = require("@typescript-eslint/parser");
const typescriptEslint = require("@typescript-eslint/eslint-plugin");
const svgJsx = require("eslint-plugin-svg-jsx");
const js = require("@eslint/js");
const {
FlatCompat,
} = require("@eslint/eslintrc");
const compat = new FlatCompat({
baseDirectory: __dirname,
recommendedConfig: js.configs.recommended,
allConfig: js.configs.all
});
module.exports = defineConfig([{
extends: fixupConfigRules(compat.extends(
"plugin:import/recommended",
"plugin:import/react",
"plugin:import/typescript",
"next/core-web-vitals",
"plugin:@typescript-eslint/recommended",
)),
languageOptions: {
parser: tsParser,
},
plugins: {
"@typescript-eslint": fixupPluginRules(typescriptEslint),
"svg-jsx": svgJsx,
},
"rules": {
"svg-jsx/camel-case-dash": "error",
"svg-jsx/camel-case-colon": "error",
"svg-jsx/no-style-string": "error",
"no-unused-vars": "off",
"@typescript-eslint/no-unused-vars": ["warn"],
"@typescript-eslint/no-explicit-any": ["warn"],
"@typescript-eslint/ban-ts-comment": ["warn"],
"@typescript-eslint/no-empty-object-type": ["warn"],
"@typescript-eslint/no-require-imports": ["warn"],
"prefer-const": ["warn"],
"prefer-spread": ["warn"],
"no-restricted-syntax": ["error", {
selector: "JSXOpeningElement[name.name='feGaussianBlur']",
message: "<feGaussianBlur> has spotty Safari support",
}],
"no-restricted-imports": ["error", {
paths: [{
name: "next-intl/server",
importNames: ["getTranslations"],
message: "Do not import messages API from next-intl directly, use wrapper instead",
}, {
name: "next-intl",
importNames: ["useTranslations"],
message: "Do not import messages API from next-intl directly, use wrapper instead",
}],
}],
"import/no-duplicates": ["error"],
"import/no-unused-modules": ["warn", {
"unusedExports": true,
missingExports: true,
ignoreExports: [],
}],
"import/no-unresolved": ["error", {
"ignore": ["\\.png", "\\.svg", "\\.jpg", "\\.jpeg", "server-only"],
}],
},
}, globalIgnores([])]);