apollo-server/tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "declaration": true,
    "noImplicitAny": false,
    "allowSyntheticDefaultImports": false,
    "pretty": true,
    "removeComments": true,
    "lib": ["es6"],
    "types": [
      "@types/node"
    ]
  }
}