Hard requirements
- Node >=20.10.0
- ESLint >=9.0.0
- TypeScript >= 5.0.0
compilerOptions.strictNullChecks: truein yourtsconfig.json. Sometypescript-eslintrules require it to be turned on.
compilerOptions.strictNullChecks: true in your tsconfig.json.
Some typescript-eslint rules require it to be turned on.