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.