tsconfig.json

{
  "compilerOptions": {
    "declaration": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
      "lib": ["es2019", "dom",       "dom.iterable"],
    "module": "commonjs",
    "moduleResolution": "node",
    "noEmitOnError": true,
    "noUnusedLocals": true,
    "outDir": "lib",
    "resolveJsonModule": true,
    "rootDirs": ["./", "js"],
    "skipLibCheck": true,
    "sourceMap": true,
    "strict": true,
      "experimentalDecorators": true,
    // This allows us to initialize members in the "initialize" method
    "strictPropertyInitialization": false,
      "target": "es2015",
      "jsx": "react",
      "baseUrl": "."
  },
    "typeRoots": [
	"./js/typings",
	"./node_modules/@types/"
    ],
    "include": ["js/*.ts", "js/*.tsx", "js/core/*.ts", "js/core/*.tsx", ],
    "ts-node": {
        "transpileOnly": true
    }
}