tsconfig.json

{
  "compilerOptions": {
    "incremental": true,
    "target": "es2017",
    "outDir": "dist/main",
    "rootDir": "src",
    "moduleResolution": "node",
    "module": "commonjs",
    "declaration": true,
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,
    "resolveJsonModule": false /* Include modules imported with .json extension. */,
    "removeComments": true,
    "strict": true /* Enable all strict type-checking options. */,
    "noUnusedLocals": true /* Report errors on unused locals. */,
    "noUnusedParameters": true /* Report errors on unused parameters. */,
    "noImplicitReturns": true /* Report error when not all code paths in function return a value. */,
    "noFallthroughCasesInSwitch": true /* Report errors for fallthrough cases in switch statement. */,
    "pretty": true /* Stylize errors and messages using color and context. */,
    "lib": ["es2017", "DOM"]
  },
  "include": ["src/**/*.ts"],
  "exclude": ["node_modules/**"],
  "compileOnSave": false
}