tsconfig.json

{
  "compilerOptions": {
    "target": "esnext",                    /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', 'ES2021', or 'ESNEXT'. */
    "module": "esnext",               /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */
    "moduleResolution": "node",
    "strict": true,                     /* Enable all strict type-checking options. */
    "esModuleInterop": true,            /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. */
    "skipLibCheck": true,               /* Skip type checking of declaration files. */
    "forceConsistentCasingInFileNames": true, /* Disallow inconsistently-cased references to the same file. */
    "allowSyntheticDefaultImports": true,
    "jsx": "react-jsx",
    "jsxImportSource": "preact",
  },
  "include": ["app/**/*"],              /* Specify an array of filenames or patterns to include files for compilation. */
  "exclude": ["node_modules"]           /* Specify an array of filenames or patterns to exclude files from compilation. */
}