tsconfig.json

{
  "compilerOptions": {
    "target": "ES2022",
    "module": "ESNext",
    "moduleResolution": "Bundler",
    "lib": ["ES2022"],
    "types": ["node"],
    "outDir": "dist",
    // rootDir is the repo root (not src) so `tsc --noEmit` can type-check the
    // shared test fixtures under test/ alongside the src they import. The build
    // (tsup) bundles from explicit src entries and is unaffected by rootDir.
    "rootDir": ".",

    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,

    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "verbatimModuleSyntax": true,

    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,

    "skipLibCheck": true,

    "ignoreDeprecations": "6.0"
  },
  // Test specs (src/**/*.test.ts) and the shared fixtures (test/**) are intentionally
  // INCLUDED so `tsc --noEmit` (the typecheck script + CI) and the editor type-check
  // them. The build (tsup) bundles from explicit src entries and is unaffected.
  "include": ["src/**/*", "test/**/*"],
  "exclude": ["node_modules", "dist"]
}