ethers.js/packages/hash/tsconfig.json

{
  "compilerOptions": {
    "outDir": "./lib/",
    "rootDir": "./src.ts"
  },
  "exclude": [],
  "extends": "../../tsconfig.package.json",
  "include": [
    "./src.ts/*",
    "./src.ts/ens-normalize/*"
  ]
}