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Alexei Garban
Alexei Garban

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If ESLint won't let you build your NextJS 15 app because of no-unused-vars do this

#nextjs #eslint #typescript

Problem

When you try to deploy your new NEXTJs 15 site and see this error:

[!ERROR]
Warning: 'someParams' is defined but never used. no-unused-vars

You just need to disable a eslint configuration by adding a rule like this one:

rules:{ "@typescript-eslint/no-unused-vars": "off" }
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So the complete eslint.config.mjs will look like this

import { dirname } from "path"; import { fileURLToPath } from "url"; import { FlatCompat } from "@eslint/eslintrc"; const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename); const compat = new FlatCompat({ baseDirectory: __dirname, }); const eslintConfig = [ ...compat.config({ extends: ['next/core-web-vitals', 'next/typescript'], rules:{ "@typescript-eslint/no-unused-vars": "off" } }), ] export default eslintConfig;
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