tsconfig.base.json

{
  "compilerOptions": {
    "allowJs": true,
    "rootDir": "./src",
    "baseUrl": "./",
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "noEmitOnError": true,
    "resolveJsonModule": true,
    "declaration": true,
    "declarationMap": false,
    "declarationDir": "./lib/types",
    "sourceMap": false,
    "module": "esnext",
    "composite": true,
    "moduleResolution": "node",
    "skipLibCheck": true,
    "importHelpers": true,
    "noImplicitAny": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "strictNullChecks": true,
    "lib": [
      "es2015",
      "dom"
    ],
  },
  "exclude": [
    "node_modules",
    "lib",
    "lib-amd",
    "scripts",
    "tests",
  ],
  "include": [
    "src/"
  ],
  "ts-node": { 
    "files": true 
  }
}