tsconfig.json

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "baseUrl": ".",
    "declaration": true,
    "lib": ["dom", "es2015"],
    "moduleResolution": "node",
    "noImplicitAny": true,
    "outDir": "dist",
    "skipLibCheck": true,
    "sourceMap": true,
    "strict": true,
    "target": "es2015"
  },
  "include": ["./src"]
}