refactor(deps): lift Next 15→16, ESLint 9→10, TypeScript 5.7→6 - #24
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- next ^15.1.4 → ^16 (16.3.3), eslint-config-next ^15.5.20 → ^16 - eslint ^9 → ^10 (10.9.1): eslintrc format removed, so .eslintrc.json is replaced by flat eslint.config.mjs built on eslint-config-next's native flat exports (core-web-vitals + typescript) - lint script: `next lint` (removed in Next 16) → `eslint .` - settings.react.version pinned to '19' — eslint-plugin-react's 'detect' calls getFilename(), removed in ESLint 10 - typescript ^5.7.3 → ^6 (6.0.3) - tsconfig: Next 16 build reconfigured jsx→react-jsx and added .next/dev/types to include (mandatory Next 16 changes) Verified: format:check, lint, typecheck, 17/17 tests, next build all green. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WqKqMnHQHSmkGFfc5t7Rxn
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What moved
Traps handled
next lintremoved in Next 16 → lint script is noweslint ...eslintrc.jsondeleted, replaced by flateslint.config.mjsbuilt on eslint-config-next v16's native flat exports (core-web-vitals+typescript).version: 'detect'crashes under ESLint 10 (getFilename is not a function) → pinnedsettings.react.version: '19'.jsx: react-jsx(mandatory) and added.next/dev/types/**/*.tsto include; committed as reformatted by prettier.middleware.tspresent;next.config.tsis empty — no removed options.params/searchParamsmisuse found; typecheck + build confirm).Verification
npm run format:check✓npm run lint✓ (0 errors)npm run typecheck✓npm test✓ 17/17npm run build✓ (Next 16.3.3, all routes compile)🤖 Generated with Claude Code
https://claude.ai/code/session_01WqKqMnHQHSmkGFfc5t7Rxn