tsconfig.base.json

{
  "$schema": "https://json.schemastore.org/tsconfig",
  "compilerOptions": {
    "target": "ES2022",
    "lib": ["ES2023", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "moduleResolution": "bundler",
    "moduleDetection": "force",
    "jsx": "preserve",
    "useDefineForClassFields": true,

    /* Strictness — see hard rule 7 in CLAUDE.md. */
    "strict": true,
    "noImplicitOverride": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "exactOptionalPropertyTypes": true,

    /* Emit / interop */
    "verbatimModuleSyntax": true,
    "isolatedModules": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "skipLibCheck": true
  }
}