tsconfig.json

{
    "compilerOptions": {
        "strictNullChecks": true, // enable strict null checks as a best practice
        "allowJs": false,
        "module": "commonjs",
        "esModuleInterop": true,
        "target": "es5",
        "noImplicitAny": true,
        "moduleResolution": "node",
        "sourceMap": true,
        "outDir": "dist",
        "baseUrl": ".",
        "paths": {
            "*": ["node_modules/*", "src/types/*"]
        },
        "declaration": false,
        // "emitDecoratorMetadata": true,
        // "experimentalDecorators": true,
        "typeRoots": ["node_modules/@types"],
        "lib": ["es2017", "es2016", "es2015", "dom"]
    },
    "include": ["src/**/*", "test/**/*", ".eslintrc.js", "jest.config.js"],
    "exclude": ["node_modules, dist"]
}