tsconfig.json

{
  "compilerOptions": {
    "target": "ES2023",
    "lib": ["ES2023"],
    "module": "NodeNext",
    "moduleResolution": "NodeNext",
    "types": ["node"],
    "skipLibCheck": true,

    "strict": true,
    "noUncheckedIndexedAccess": true,
    "exactOptionalPropertyTypes": true,
    "noImplicitOverride": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,

    "allowImportingTsExtensions": true,
    "noEmit": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "verbatimModuleSyntax": true,

    // Node runs these .ts files by erasing types, which cannot handle parameter properties,
    // enums, namespaces or decorators. This flag makes tsc reject that syntax at typecheck time,
    // so `npm run compass` can never break the way it would if someone reintroduced one.
    "erasableSyntaxOnly": true
  },
  "include": ["src/**/*.ts"]
}