tsconfig.json

{
  "compilerOptions": {
    "target": "es2017",
    "outDir": "build/main",
    "rootDir": "src",
    "moduleResolution": "node",
    "module": "commonjs",
    "declaration": true,
    "inlineSourceMap": false,
    "jsx": "react",
    "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,

    "strict": true /* Enable all strict type-checking options. */,

    /* Additional Checks */
    "noUnusedLocals": false /* Report errors on unused locals. */,
    "noUnusedParameters": false /* 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. */,

    /* Debugging Options */
    "traceResolution": false /* Report module resolution log messages. */,
    "listEmittedFiles": false /* Print names of generated files part of the compilation. */,
    "listFiles": false /* Print names of files part of the compilation. */,
    "pretty": true /* Stylize errors and messages using color and context. */,
    "skipLibCheck": true,
    "lib": ["es2017", "dom"],
    "types": ["node", "jest"],
    "typeRoots": ["./node_modules/@types", "./src/types"]
  },
  "include": ["./src/**/*"],
  "exclude": ["./src/__test_utils/**", "./src/examples/**", "**/__tests__/**"],
  "compileOnSave": false
}