Custom Directives

Sprig does not offer a general user-defined directive registration API. Its compiler has a fixed set of supported directives, including @if, @else, @for, @show, @ref, event syntax, input bindings, and use:visibleIsland.

For one-off DOM behavior, use a ref callback in JavaScript or @ref in a template and register teardown with the owner. For reusable behavior, prefer a JavaScript helper or component. Unsupported directive-like attributes are not automatically converted to behavior.