tsconfig.json

{
  "compilerOptions": {
    "target": "ES2018", // ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017','ES2018' or 'ESNEXT'.
    "module": "commonjs", // Module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'.
    "lib": [
      "dom",
      "dom.iterable",
      "esnext",
      "ES2020.String"
    ],
    "declaration": false,
    "isolatedModules": true,
    /* Additional Checks */
    "useDefineForClassFields": true,
    "skipLibCheck": true,
    "moduleResolution": "node",
    "jsx": "preserve",
    "jsxFactory": "preact.h",
    "jsxFragmentFactory": "preact.Fragment",
    "allowSyntheticDefaultImports": true,
    "downlevelIteration": true,
    "esModuleInterop": true,
    "allowJs": false,
    "sourceMap": true,
    "baseUrl": "src",
    "paths": {
      "react": [
        "./node_modules/preact/compat/"
      ],
      "react-dom": [
        "./node_modules/preact/compat/"
      ]
    }
  },
  "include": [
    "src",
    "jest.config.ts.ts",
    "tailwind.config.js"
  ],
  "exclude": [
    "**/node_modules",
    "**/.*/"
  ]
}