> 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.

# no-useless-catch

[Added in v0.5.0](https://github.com/web-infra-dev/rslint/releases/tag/v0.5.0)
## Configuration

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


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

export default defineConfig([
  js.configs.recommended,
  {
    rules: {
      'no-useless-catch': 'error',
    },
  },
]);
```

## Rule Details

Disallows catch clauses that only rethrow the caught error. A catch clause that only rethrows the original error is redundant, and has no effect on the runtime behavior of the program. These redundant clauses can be a source of confusion and code bloat, so it is better to disallow them.

Examples of **incorrect** code for this rule:

```javascript
try {
  doSomethingThatMightThrow();
} catch (e) {
  throw e;
}

try {
  doSomethingThatMightThrow();
} catch (e) {
  throw e;
} finally {
  cleanUp();
}
```

Examples of **correct** code for this rule:

```javascript
try {
  doSomethingThatMightThrow();
} catch (e) {
  doSomethingBeforeRethrow();
  throw e;
}

try {
  doSomethingThatMightThrow();
} catch (e) {
  handleError(e);
}

try {
  doSomethingThatMightThrow();
} catch ({ message }) {
  throw message;
}
```

## Original Documentation

- [ESLint: no-useless-catch](https://eslint.org/docs/latest/rules/no-useless-catch)
- [Source code](https://github.com/eslint/eslint/blob/v10.8.1/lib/rules/no-useless-catch.js)