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title: noInvalidConstructorSuper
description: Learn more about noInvalidConstructorSuper
---
import { Tabs, TabItem } from '@astrojs/starlight/components';

<Tabs>
<TabItem label="JavaScript (and super languages)" icon="seti:javascript">
## Summary
- Rule available since: `v1.0.0`
- Diagnostic Category: [`lint/correctness/noInvalidConstructorSuper`](/reference/diagnostics#diagnostic-category)
- This rule is **recommended**, meaning it is enabled by default.
- This rule doesn't have a fix.
- The default severity of this rule is [**error**](/reference/diagnostics#error).
- Sources: 
  - Same as [`constructor-super`](https://eslint.org/docs/latest/rules/constructor-super)

## How to configure
```json title="biome.json"
{
	"linter": {
		"rules": {
			"correctness": {
				"noInvalidConstructorSuper": "error"
			}
		}
	}
}

```
## Description
Prevents the incorrect use of `super()` inside classes. It also checks whether a call `super()` is missing from classes that extends other constructors.

## Examples

### Invalid

```js
class A {
    constructor() {
        super();
    }
}
```

<pre class="language-text"><code class="language-text">code-block.js:3:9 <a href="https://biomejs.dev/linter/rules/no-invalid-constructor-super">lint/correctness/noInvalidConstructorSuper</a> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━<br /><br />  <strong><span style="color: Tomato;">✖</span></strong> <span style="color: Tomato;">This class should not have a </span><span style="color: Tomato;"><strong>super()</strong></span><span style="color: Tomato;"> call. You should remove it.</span><br />  <br />    <strong>1 │ </strong>class A &#123;<br />    <strong>2 │ </strong>    constructor() &#123;<br />  <strong><span style="color: Tomato;">&gt;</span></strong> <strong>3 │ </strong>        super();<br />   <strong>   │ </strong>        <strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><br />    <strong>4 │ </strong>    &#125;<br />    <strong>5 │ </strong>&#125;<br />  <br /></code></pre>

```js
class A extends undefined {
    constructor() {
        super();
    }
}
```

<pre class="language-text"><code class="language-text">code-block.js:3:9 <a href="https://biomejs.dev/linter/rules/no-invalid-constructor-super">lint/correctness/noInvalidConstructorSuper</a> ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━<br /><br />  <strong><span style="color: Tomato;">✖</span></strong> <span style="color: Tomato;">This class calls </span><span style="color: Tomato;"><strong>super()</strong></span><span style="color: Tomato;">, but the class extends from a non-constructor.</span><br />  <br />    <strong>1 │ </strong>class A extends undefined &#123;<br />    <strong>2 │ </strong>    constructor() &#123;<br />  <strong><span style="color: Tomato;">&gt;</span></strong> <strong>3 │ </strong>        super();<br />   <strong>   │ </strong>        <strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><br />    <strong>4 │ </strong>    &#125;<br />    <strong>5 │ </strong>&#125;<br />  <br />  <strong><span style="color: lightgreen;">ℹ</span></strong> <span style="color: lightgreen;">This is where the non-constructor is used.</span><br />  <br />  <strong><span style="color: Tomato;">&gt;</span></strong> <strong>1 │ </strong>class A extends undefined &#123;<br />   <strong>   │ </strong>                <strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><strong><span style="color: Tomato;">^</span></strong><br />    <strong>2 │ </strong>    constructor() &#123;<br />    <strong>3 │ </strong>        super();<br />  <br /></code></pre>

### Valid

```js
export default class A extends B {
    constructor() {
        super();
    }
}
```

```js
export class A {
    constructor() {}
}
```

## Related links

- [Disable a rule](/linter/#disable-a-rule)
- [Configure the code fix](/linter#configure-the-code-fix)
- [Rule options](/linter/#rule-options)
- [Source Code](https://github.com/biomejs/biome/blob/main/crates/biome_js_analyze/src/lint/correctness/no_invalid_constructor_super.rs)
- [Test Cases](https://github.com/biomejs/biome/blob/main/crates/biome_js_analyze/tests/specs/correctness/noInvalidConstructorSuper)

</TabItem>
</Tabs>