feat(frontend): migrate to eslint 10#98
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Bump eslint 9 → 10 and @eslint/js 9 → 10. Add npm overrides for eslint-plugin-react-hooks peer dep (eslint 10 support merged upstream but not yet published to npm). Fix 6 new no-useless-assignment errors from eslint 10's expanded recommended ruleset by removing redundant initializers. Also fixes 2 high-severity npm audit vulnerabilities (flatted, undici).
This was referenced Mar 14, 2026
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Summary
eslint9 → 10 and@eslint/js9 → 10overridesforeslint-plugin-react-hookspeer dep (eslint 10 support merged upstream in [eslint-plugin-react-hooks] Add ESLint v10 support facebook/react#35720 but not yet published to npm)no-useless-assignmenterrors from eslint 10's expanded recommended rulesetCloses #80. Supersedes #97 (Dependabot eslint bump that failed CI due to peer dep conflict).
Test plan
npx eslint .— 0 errors, 0 warningsnpx tsc -b --noEmit— cleannpx vitest run— 47 files, 541 tests passingnpm run build— successful production build