tsconfig.json

{
  "compilerOptions": {
    "module": "ESNext",
    "lib": ["ES2020", "DOM", "DOM.Iterable"],
    "declaration": true,
    "emitDeclarationOnly": true,
    "outDir": "./types",
    "strict": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "moduleResolution": "Node",
    "isolatedModules": true,
    "allowSyntheticDefaultImports": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "skipLibCheck": true,
    "noImplicitAny": false,
    "jsx": "react-jsx",

    "target": "ES2020",
    "useDefineForClassFields": true,

    "allowImportingTsExtensions": true,
    "moduleDetection": "force",
    "baseUrl": ".",
    "paths": {
      "@/*": ["./packages/*"]
    }
  },
  "include": ["packages/**/*.ts", "test/**/*.ts"]
}