rojs/tsconfig.json

{
    "compilerOptions": {
        "allowJs": true,
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "module": "es6",
        "moduleResolution": "node",
        "noImplicitAny": true,
        "outDir": "./dist/",
        "sourceMap": true,
        "target": "es5"
    }
}