mark-mark/tsconfig.json

{
    "compilerOptions": {
        "target": "es2016",
        "module": "nodenext",
        "declaration": true,
        "outDir": "./lib",
        "strict": true,
        "experimentalDecorators": true,
        "emitDecoratorMetadata": true,
        "esModuleInterop": true,
        "forceConsistentCasingInFileNames": true,
        "skipLibCheck": true,
        "lib": ["ESNext"]
    },
    "include": ["src"],
    "exclude": ["node_modules"]
}