tsconfig.json

{
    "compilerOptions": {
        "target": "es5",
        "module": "CommonJS",                           // Include imports/exports in the transpiled Javascript
        "esModuleInterop": true,
        "moduleResolution": "node",                     // Use the locally installed Node modules 
        "lib": ["es6", "dom", "es2017"],
        "types": [ "node", "jest" ],                    // Types that will be used in the project
        "noEmit": false,                                // Don't emit Javascript files on compilation
        "typeRoots": [ "../node_modules/@types" ],
        "sourceMap": true,                              // Generates a map file that allows us to see the "non-minified" code when debugging
        "noUnusedParameters": true,                     // Warns when a function parameter is not used
        "noImplicitReturns": true,                      // Enforce always adding types to function inputs
        "removeComments": false,                        // Remove comments from the transpiled JS file
    }
}