rsnext/errors/no-sync-scripts.md
Michael Novotny 5211ac5cae
Adds consistency to ESLint rules. (#34335)
* Adds consistency to ESLint rules.

* Fixes lint errors.

* Fixes manifest.

* Adds missing title.

* Fixes copy / paste error.

Co-authored-by: Lee Robinson <me@leerob.io>

* Update errors/no-script-in-document.md

Co-authored-by: Lee Robinson <me@leerob.io>

* Update errors/no-sync-scripts.md

Co-authored-by: Lee Robinson <me@leerob.io>

* Updates a couple of rule descriptions.

* Adds redirects.

* Fixes unit tests.

* Removes duplicated section.

* Updates `no-before-interactive-script-outside-document` description.

* Fixes lint.

* Fixes integration tests.

* Adds description to `no-before-interactive-script-outside-document` documentation.

* Removes `link-passhref` from rules list.

* Updates remaining `pages/_middleware.js` references.

* Adds consistancy to messaging in new `no-styled-jsx-in-document` rule.

* Apply suggestions from code review

* Apply suggestions from code review

Co-authored-by: Lee Robinson <me@leerob.io>
Co-authored-by: Tim Neutkens <tim@timneutkens.nl>
Co-authored-by: JJ Kasper <jj@jjsweb.site>
2022-06-13 21:17:42 -05:00

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Markdown

# No Sync Scripts
> Prevent synchronous scripts.
### Why This Error Occurred
A synchronous script was used which can impact your webpage performance.
### Possible Ways to Fix It
#### Script component (recommended)
```jsx
import Script from 'next/script'
function Home() {
return (
<div class="container">
<Script src="https://third-party-script.js"></Script>
<div>Home Page</div>
</div>
)
}
export default Home
```
#### Use `async` or `defer`
```html
<script src="https://third-party-script.js" async />
<script src="https://third-party-script.js" defer />
```
### Useful Links
- [Efficiently load third-party JavaScript](https://web.dev/efficiently-load-third-party-javascript/)