Identifies forbidden Liquid tags in [theme app extension](/docs/apps/build/online-store/theme-app-extensions) app block and app embed block code.

Forbidden tags include:



- `{% javascript %}`
- `{% stylesheet %}`
- `{% include 'foo' %}`
- `{% layout 'foo' %}`
- `{% section 'foo' %}`
- `{% sections 'foo' %}`



## Disabling this check

This check is enabled by default when you run the Shopify CLI 3.x [`build`](/docs/api/shopify-cli/app/app-build) command on an app that contains a theme app extension. Disabling this check isn't recommended.

This check is disabled by default when you run the Shopify CLI 2.x [`shopify theme check`](/docs/storefronts/themes/tools/theme-check/commands) command.