tsconfig.json

{
  // Type checking only. Bun executes TypeScript directly and `bun build`
  // produces `dist/index.js`, so this project never emits through tsc:
  // `tsc --noEmit` is the type gate, `bun test` is the behavior gate.
  //
  // `@types/bun` supplies every runtime type this package uses -- `Bun.which`,
  // `Bun.spawn`, `Bun.CryptoHasher`, `Bun.file` -- so its version moves in step
  // with the Bun version `.github/workflows/ci.yml` pins.
  "compilerOptions": {
    "target": "ESNext",
    "lib": ["ESNext"],
    "module": "Preserve",
    "moduleResolution": "bundler",
    "moduleDetection": "force",
    "types": ["bun"],

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

    // `strict` alone permits two mistakes this package cannot afford.
    //
    // `noUncheckedIndexedAccess` matters for `checksums.txt` parsing and
    // archive-member accounting, both of which index into split results whose
    // length they have just tested; without it a wrong test still type-checks.
    //
    // `exactOptionalPropertyTypes` matters because the owned `mcp.json` entry
    // must be written with absent fields *omitted* rather than present as
    // `undefined`: `JSON.stringify` drops an explicit `undefined`, so without
    // this flag a key the writer believes it set can silently vanish from the
    // operator's configuration.
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "exactOptionalPropertyTypes": true,
    "noImplicitOverride": true,
    "noFallthroughCasesInSwitch": true,
    "noPropertyAccessFromIndexSignature": true,

    "skipLibCheck": true
  },
  "include": ["src/**/*.ts", "test/**/*.ts", "scripts/**/*.ts"]
}