tsconfig.json

{
  "extends": "@tsconfig/node12/tsconfig.json",
  "compilerOptions": {
    "declaration": true,
    "composite": true,
    "emitDeclarationOnly": true,
    "isolatedModules": true,
    "importsNotUsedAsValues": "error",

    "strict": true,

    /* Additional Checks */
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,

    /* Module Resolution Options */
    "moduleResolution": "node",
    /* This needs to be false so our types are possible to consume without setting this */
    "esModuleInterop": false,
    "skipLibCheck": false,
    "resolveJsonModule": true
  }
}