Signature
bool component_exists(String name)
Checks whether a component file can be resolved from the current page context.
Resolution uses the same host resolver as component_resolve(): candidate bases include absolute targets, the entry unit directory, the current unit directory, and the site root; each base tries exact, .uce, components/name, and components/name.uce forms.
If name contains a colon, only the file portion is used for existence checks.
This is useful when a page wants to render an optional component if it is present without hard-failing when it is missing.
Example
print(component_exists("examples/sample_unit") ? "exists" : "not found", " / ", component_exists("no_such_component") ? "exists" : "not found", "\n");
Output
exists / not found