tsconfig.json

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es2017",
        "outDir": "out",
        "sourceMap": true,
        "removeComments": true,
        "strictNullChecks": true,
        "noImplicitAny": true,
        "allowJs": true
    },
    "include": [
        "src"
    ]
}