tsconfig.json

{
  "include": ["./src/**/*"],
  "compilerOptions": {
    "skipLibCheck": true, // https://stackoverflow.com/questions/52399839/typescript-duplicate-identifier-librarymanagedattributes/52404148#52404148
    "target": "es2017",
    "module": "es2015",
    "lib": ["es2017", "dom"],
    "jsx": "react",
    "declaration": true,
    "strict": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "strictPropertyInitialization": true,
    "noImplicitThis": true,
    "alwaysStrict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "moduleResolution": "node",
    "baseUrl": "./",
    "paths": {
      "*": ["./types/*"],
      "test/test-utils": ["./test/test-utils"],
      "react-intl-tel-input": ["./types/react-intl-tel-input"]
    },
    "types": ["node", "jest", "@types/testing-library__jest-dom"],
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "traceResolution": false,
    "listEmittedFiles": false,
    "listFiles": false,
    "pretty": true
  }
}