tsconfig.json

{
    "compilerOptions": {
        "outDir": ".",
        "module": "commonjs",
        "target": "es2017",
        "downlevelIteration": true,
        "lib": ["dom", "es2017"],
        "sourceMap": true,
        "allowJs": false,
        "jsx": "react",
        "moduleResolution": "node",
        "forceConsistentCasingInFileNames": true,
        "noImplicitReturns": true,
        "noImplicitAny": true,
        "noImplicitThis": true,
        "strictNullChecks": true,
        "suppressImplicitAnyIndexErrors": false,
        "noUnusedLocals": true,
        "allowSyntheticDefaultImports": true,
        "esModuleInterop": true,
        "resolveJsonModule": true,
        "baseUrl": "./src",
        "declaration": true
    },
    "include": [
        "./src",
        "./typings"
    ],
    "exclude": []
}