hamid
61 lines
2.5 KiB
JavaScript
61 lines
2.5 KiB
JavaScript
// Flat ESLint config (ESLint 10 / Next.js 16).
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//
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// `next lint` was removed in Next 16, so linting runs through the ESLint CLI
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// directly: `npm run lint`. The eslint-config-next package (v16) ships a
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// ready-made flat-config array that wires up the Next core-web-vitals rules,
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// the TypeScript rules, react / react-hooks / jsx-a11y / import plugins and the
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// TypeScript parser — so we just spread it and layer our project rules on top.
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import next from 'eslint-config-next';
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import prettier from 'eslint-config-prettier/flat';
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// Unused variables/imports are dead code. eslint-config-next already enables
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// `@typescript-eslint/no-unused-vars` at 'warn'; we raise it to 'error' so
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// `npm run check` fails on dead code instead of merely warning. We patch the
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// severity *in place* on next's own config objects rather than adding a separate
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// override object, because in flat config a rule can only be referenced from a
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// config object that registers its plugin — and the `@typescript-eslint` plugin
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// is registered inside next's objects, not ours. Prefix a name with `_` to opt
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// out (intentionally-unused args, catch bindings, rest-spread siblings).
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const NO_UNUSED_VARS = [
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'error',
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{
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args: 'after-used',
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argsIgnorePattern: '^_',
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varsIgnorePattern: '^_',
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caughtErrorsIgnorePattern: '^_',
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ignoreRestSiblings: true,
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},
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];
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const nextWithStrictUnusedVars = [...next].map((entry) =>
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entry?.rules?.['@typescript-eslint/no-unused-vars']
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? { ...entry, rules: { ...entry.rules, '@typescript-eslint/no-unused-vars': NO_UNUSED_VARS } }
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: entry
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);
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/** @type {import('eslint').Linter.Config[]} */
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const config = [
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// Things ESLint should never look at.
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{
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ignores: ['.next/**', 'out/**', 'coverage/**', 'node_modules/**', 'next-env.d.ts'],
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},
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// Next.js + TypeScript + React + import/a11y rule sets, with no-unused-vars
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// raised to error (see NO_UNUSED_VARS above).
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...nextWithStrictUnusedVars,
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// Turn off every stylistic rule that would fight Prettier. Keep this last
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// among the rule-providing entries so it wins. Formatting is owned by
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// Prettier (`npm run format`), never by ESLint.
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prettier,
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// NOTE: `import/no-cycle` is intentionally NOT enabled. On this toolchain the
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// eslint-plugin-import TypeScript resolver bundled by eslint-config-next 16
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// throws "invalid interface loaded as resolver" for that rule, and it cannot
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// follow the `@/*` path alias to trace cycles anyway. Re-add it once the
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// import-resolver-typescript interface is compatible.
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];
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export default config;
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