tsconfig.json

{
    "compilerOptions": {
        "module": "commonjs",
        "target": "es6",
        "outDir": "out",
        "lib": ["es6"],
        "sourceMap": true,
        "rootDir": "src",
        "strict": true,
        "resolveJsonModule": true,
        "esModuleInterop": true
        /* Additional Checks */
        // "noImplicitReturns": true, /* Report error when not all code paths in function return a value. */
        // "noFallthroughCasesInSwitch": true, /* Report errors for fallthrough cases in switch statement. */
        // "noUnusedParameters": true,  /* Report errors on unused parameters. */
    },
    "exclude": ["node_modules", ".vscode-test", "./src/test/**"]
}