guesstimate/client/tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "es6",
    "lib": ["dom", "es6"],
    "moduleResolution": "node",

    "jsx": "react",

    "strict": true,
    "allowSyntheticDefaultImports": true
  },
  "include": ["src/**/*.ts", "src/**/*.tsx"]
}