tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "outDir": "lib",
    "rootDir": "src",
    "moduleResolution": "node",
    "module": "commonjs",
    "declaration": true,
    "inlineSourceMap": false,
    "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": 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. */,

    /* 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. */,

    "lib": ["es5", "dom"],
    "types": ["jest", "node"],
    "typeRoots": ["node_modules/@types", "src/types"],
    "jsx": "react"
  },
  "include": ["src/**/*.ts"],
  "exclude": ["node_modules/**"],
  "compileOnSave": false
}