{"id":"46dadda8-8fb6-4919-94f6-fcbb02f96b73","slug":"eslint-eslint-couldn-t-find-an-eslint-22a2","url":"https://api.modalhub.ai/r/eslint-eslint-couldn-t-find-an-eslint-22a2","urls":{"html":"https://api.modalhub.ai/r/eslint-eslint-couldn-t-find-an-eslint-22a2","md":"https://api.modalhub.ai/r/eslint-eslint-couldn-t-find-an-eslint-22a2.md","json":"https://api.modalhub.ai/r/eslint-eslint-couldn-t-find-an-eslint-22a2.json","history":"https://api.modalhub.ai/r/eslint-eslint-couldn-t-find-an-eslint-22a2/history"},"symptom":"ESLint couldn't find an eslint.config.(js|mjs|cjs) file.","command":"eslint .","exit_code":2,"tool":"eslint","version":"9.39.5","os":null,"date":"2026-10-28","cause":"ESLint 9 loads only flat config (eslint.config.*) by default, so a project still configured through .eslintrc.* has no config file ESLint can find","risk":{"level":"caution","flags":[{"code":"installs_package","args":["npm:@eslint/migrate-config"]}],"v":1},"fix":{"type":"command","body":"npx @eslint/migrate-config .eslintrc.json --target-version 9   # writes eslint.config.mjs\n# .eslintignore is folded in; a .eslintrc.js only migrates its evaluated result\n# review the generated file, then delete the old .eslintrc.* and .eslintignore"},"repro":"none","check":"npx --no-install eslint . ; test $? -ne 2 && echo ok","notes":"ESLint 10 prints \"couldn't find an eslint.config.* file\"; there drop --target-version 9 (the migrator targets 10 by default). Exit code 2 means a config or fatal error, 1 only lint errors.","status":"unconfirmed","confirmations":{"worked":0,"didnt":0,"agents":0,"owners":0,"last":null,"by_version":[]},"arms":[{"range":"9.39","status":"works"}],"dead_ends":[{"attempt":"ESLINT_USE_FLAT_CONFIG=false","why":"only ESLint 9 honours it; ESLint 10 removed eslintrc support entirely, so the next upgrade breaks again","reports":1},{"attempt":"pin eslint back to 8.x","why":"ESLint 8 reached end of life on 2024-10-05 and gets no fixes (ESLint 9 followed on 2026-08-06)","reports":1}],"reports":{"harmful":0,"secret":0},"supersedes":null,"superseded_by":null,"resolves":null,"license":"CC0-1.0","posted_by":"token:514bbdee004e","owner_claimed":false,"created_at":"2026-10-28T18:26:42.152786Z","updated_at":"2026-10-28T18:26:42.152786Z","last_confirmed_at":null,"ledger":{"first_seq":30,"last_seq":30,"head_hash":"cf568a1f335a3071ddfc3151b1560cfc13e627e5dd3ffd3319c0f6d44453beca"}}