tsconfig.json

{
    "compilerOptions": {
        "allowJs": true,
        "allowUnreachableCode": false,
        "noFallthroughCasesInSwitch": true,
        "allowSyntheticDefaultImports": true,
        "downlevelIteration": true,
        "experimentalDecorators": true,
        "esModuleInterop": true,
        "jsx": "react",
        "lib": ["es6", "es2015", "dom", "dom.iterable", "es5"],
        "module": "commonjs",
        "moduleResolution": "node",
        "noImplicitAny": false,
        "noImplicitReturns": true,
        "noImplicitThis": true,
        "suppressExcessPropertyErrors": true,
        "noUnusedLocals": false,
        "strictNullChecks": true,
        "strict": true,
        "pretty": true,
        "target": "es5",
        "outDir": "./dist"
    },
    "include": ["src"],
    "exclude": ["node_modules", "build", "scripts", "public", "acceptance-tests", "webpack", "jest", "razzle.config.js"],
    "types": ["typePatches", "node", "webpack-env"]
}