tsconfig.json

{
  "compilerOptions": {
    "outDir": "./dist",
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "preserveConstEnums": true,
    "sourceMap": true,
    "lib": [
      "es2017",
      "dom"
    ],
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "suppressImplicitAnyIndexErrors": true,
    "strictNullChecks": true,
    "noUnusedLocals": true,
    "noImplicitThis": true,
    "noUnusedParameters": true,
    "importHelpers": true,
    "noEmitHelpers": false,
    "module": "commonjs",
    "moduleResolution": "node",
    "pretty": true,
    "target": "es2017",
    "jsx": "react",
    "typeRoots": [
      "./node_modules/@types"
    ],
    "baseUrl": "."
  },
  "include": [
    "src/**/*"
  ],
  "exclude": [
    "node_modules"
  ],
  "formatCodeOptions": {
    "indentSize": 2,
    "tabSize": 2
  }
}