> For AI agents: the complete documentation index is available at https://rslint.rs/llms.txt, the full documentation bundle is available at https://rslint.rs/llms-full.txt.

# prefer-structured-clone

[Added in v0.9.4](https://github.com/web-infra-dev/rslint/releases/tag/v0.9.4)
## Configuration

| Preset                              | Configured Value |
| ----------------------------------- | ---------------- |
| ✅ unicornPlugin.configs.recommended | `"error"`        |


```ts title=rslint.config.ts
import { defineConfig, unicornPlugin } from '@rslint/core';

export default defineConfig([
  unicornPlugin.configs.recommended,
  {
    rules: {
      'unicorn/prefer-structured-clone': 'error',
    },
  },
]);
```

Prefer `structuredClone` when creating deep clones.

The rule recognizes:

- `JSON.parse(JSON.stringify(value))`
- `_.cloneDeep(value)`
- `lodash.cloneDeep(value)`
- additional configured function paths

The rule reports suggestions only; it does not autofix automatically.

```js
// Incorrect
const clone = JSON.parse(JSON.stringify(value));
const other = _.cloneDeep(value);

// Correct
const clone = structuredClone(value);
```

Custom functions can be configured through the `functions` option.

This port follows eslint-plugin-unicorn v75.0.0 and preserves authored
parentheses, comments, and trailing commas in suggestions.

- [Upstream documentation](https://github.com/sindresorhus/eslint-plugin-unicorn/blob/v75.0.0/docs/rules/prefer-structured-clone.md)
- [Upstream source](https://github.com/sindresorhus/eslint-plugin-unicorn/blob/v75.0.0/rules/prefer-structured-clone.js)