tsconfig.json

{
  "compilerOptions": {
    "outDir": "./build",
    "jsx": "react-jsx",
    "module": "ESNext",
    "target": "ES2015",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "sourceMap": true,
    "noImplicitAny": false,
    "strict": false,
    "strictNullChecks": false,
    "strictFunctionTypes": true,
    "strictBindCallApply": true,
    "strictPropertyInitialization": false,
    "noImplicitThis": true,
    "alwaysStrict": false,
    "noUnusedLocals": false,
    "noUnusedParameters": false,
    "noImplicitReturns": false,
    "noFallthroughCasesInSwitch": true,
    "noUncheckedIndexedAccess": true,
    "esModuleInterop": true,
    "allowJs": true,
    "skipLibCheck": true,
    "allowSyntheticDefaultImports": true,
    "forceConsistentCasingInFileNames": true,
    "isolatedModules": true
  },
  "include": [
    "./src/**/*"
  ]
}