Returns the template part data of active theme.

Checks that a declaration provided by the user is safe.

Enables some opt-in settings if theme declared support.

Merge new incoming data.

Removes insecure data from theme.json.

Processes a setting node and returns the same node without the insecure settings.

Processes a style node and returns the same node without the insecure styles.

Transform a slug into a CSS Custom Property.

Sanitizes the input according to the schemas.

Function that scopes a selector with another one. This works a bit like SCSS nesting except the & operator isn’t supported.