tsconfig.json

{
  "include": ["./src/**/*"],
  "compilerOptions": {
    "alwaysStrict": true,
    "strict": true,
    "target": "esnext",
    "module": "commonjs",
    "moduleResolution": "node",
    "jsx": "react-jsx",
    "jsxImportSource": "preact",
    "noEmit": true,
    "paths": {
      "react": ["./node_modules/preact/compat/"],
      "react-dom/test-utils": ["./node_modules/preact/test-utils/"],
      "react-dom": ["./node_modules/preact/compat/"],
      "react/jsx-runtime": ["./node_modules/preact/jsx-runtime/"]
    },
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "strictBindCallApply": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "useUnknownInCatchVariables": true,
    "allowSyntheticDefaultImports": true,
    "skipLibCheck": true,
    "noErrorTruncation": true,
    "exactOptionalPropertyTypes": true
  }
}