markup

The markup transform handles supported yield* expressions outside <script effect>.

Supported rewrite sites

• interpolation expressions: {yield* expr}
• event handlers
• #if
• #each
• #await
• key blocks
• spread attributes
• const tags
• @render

@render remains call-only after lowering. Supported forms include {@render yield* snippet()} and {@render (yield* snippet())}. The snippet returned by the effect is rendered reactively — the render block re-evaluates once the effect resolves, and again whenever its dependencies change.

Semantics

• Markup expressions are rewritten to runtime helper calls.
• Inline event handlers preserve Effect semantics and are executed through the active runtime.
• Markup-side yield* and <script effect> lowering are designed to coexist in the same component.