tsconfig.json

{
  "compilerOptions": {
    "baseUrl": ".",
    "outDir": "build/dist",
    "module": "esnext",
    "target": "es5",
    "lib": [
      "esnext",
      "dom",
      "dom.iterable"
    ],
    "sourceMap": true,
    "allowJs": true,
    "jsx": "react-jsx",
    "moduleResolution": "node",
    "downlevelIteration": true,
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "strictNullChecks": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedLocals": true,
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "skipLibCheck": true,
    "strict": true,
    "types": [
      "node",
      "jest"
    ],
    "noFallthroughCasesInSwitch": true
  },
  "include": [
    "src"
  ],
  "exclude": [
    "node_modules",
    "build",
    "scripts",
    "acceptance-tests",
    "webpack",
    "jest",
    "**/__tests__",
    "**/__mocks__"
  ]
}