tsconfig.json

{
  "compilerOptions": {
    "noEmit": true,
    "module": "esnext",
    "target": "es5",
    "lib": ["es6", "dom", "es2016", "es2017"],
    "sourceMap": true,
    "allowJs": false,
    "jsx": "react-jsx",
    "declaration": true,
    "moduleResolution": "node",
    "forceConsistentCasingInFileNames": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noImplicitAny": false,
    "strictNullChecks": true,
    "suppressImplicitAnyIndexErrors": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "baseUrl": "./",
    "paths": {
      "@unform/core": ["packages/core/lib"]
    }
  },
  "include": ["packages/**/*"],
  "exclude": ["node_modules", "dist"]
}