tsconfig.json

{
  "extends": "@tsconfig/node12/tsconfig.json",
  "compilerOptions": {
    "rootDir": "src",
    "outDir": "lib",
    "declaration": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "removeComments": true
  },
}