tsconfig.json

{
    "compilerOptions": {
        "allowSyntheticDefaultImports": true,
        "jsx": "react",
        "module": "esnext",
        "moduleResolution": "node",
        "outDir": "build",
        "rootDir": "src",
        "target": "es2017"
    },
    "include": [
        "src/*"
    ]
}