tsconfig.json

{
  "extends": "../../tsconfig.base.json",
  "include": ["src"],
  "compilerOptions": {
    "outDir": "dist",
    "rootDir": "src",
    "types": ["node"],
    // The `names()`/`vars()` proxies are total dictionaries: any property access returns a builder,
    // never undefined. `noUncheckedIndexedAccess` cannot express a total index signature, so under it
    // `const { parent } = names()` would type `parent` as possibly-undefined and reject `parent(a, b)`.
    // That defeats the proxy ergonomics (the whole point of the package), and the flag is off by default
    // even in `strict`. Every real index access in this package is `!`-asserted or bounds-guarded, so
    // turning it off here costs no genuine safety.
    "noUncheckedIndexedAccess": false
  }
}