# Optimizer Hints

Qwik supports an inline optimizer directive named `@qwik-disable-next-line`.

Use it to suppress a specific optimizer diagnostic for the next line of code, similar to how `eslint-disable-next-line` works.

## Syntax

Add the directive in a comment immediately before the line you want to suppress:

```tsx
{/* @qwik-disable-next-line rule-name */}
```

You can also disable more than one rule by separating them with commas:

```tsx
{/* @qwik-disable-next-line rule-one, rule-two */}
```

The directive only applies to the next physical line.

## Example

The optimizer warns when `preventdefault:*` is combined with `passive:*` for the same event, because passive listeners cannot call `preventDefault()`.

```tsx
import { component$ } from '@qwik.dev/core';

export const App = component$(() => {
  return (
    <div>
      {/* @qwik-disable-next-line preventdefault-passive-check */}
      <button passive:click preventdefault:click onClick$={() => {}}>
        click
      </button>
    </div>
  );
});
```

In this example, the optimizer suppresses the `preventdefault-passive-check` diagnostic for that button.

## When to use it

Use `@qwik-disable-next-line` sparingly.

It is most useful when:

- you understand why the optimizer is warning
- the warning is intentional in your codebase
- you want to suppress a single known case without affecting nearby code

The directive is consumed by the optimizer and removed from the generated output.

## Choosing a rule name

Use the rule name documented for the optimizer diagnostic you want to suppress.

For example:

- `preventdefault-passive-check`

If a diagnostic does not document a named optimizer rule, it should not be treated as something to routinely suppress.