tsconfig.json

{
  "compilerOptions": {
    // target latest version of ECMAScript
    "target": "ES2018",

    // module code generation
    "module": "CommonJS",

    // where to output the files
    "outDir": "dist",

    // strip out general comments
    "removeComments": true,

    // generate corresponding .d.ts files
    "declaration": true,

    // Search under node_modules for non-relative imports
    "moduleResolution": "node",

    // process & infer types from .js files
    "allowJs": true,
    "checkJs": true,

    // import non-ES modules as default imports
    "esModuleInterop": true,

    // use typescript to transpile jsx to js
    "jsx": "react",

    // resolve non-relative module names
    "baseUrl": "src",

    // enforcing style and checking
    "strict": true,
    "allowUnreachableCode": false,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "forceConsistentCasingInFileNames": true,

    // allow the use of JSON files
    "resolveJsonModule": true,

    // print name of files and generated files
    "listEmittedFiles": true,

    // add some style to errors and messages
    "pretty": true
  },
  "include": ["src", "index.ts"],
  "exclude": ["node_modules", "**/tests/**"]
}