EditorOptions was a TS interface (erased at runtime), but the Rust
wasm-bindgen extern uses #[wasm_bindgen(constructor)] which generates
'new EditorOptions()' — requiring a global constructor.
Vite 5/Rollup accidentally leaked the name into IIFE global scope,
masking this. Vite 8/Rolldown strictly erases interfaces, exposing it
as 'EditorOptions is not defined'.
Fix: make EditorOptions a class (retains runtime constructor) and mount
it on window, since the IIFE bundle name is taken by TiptapEditor.
xfy
fb31ecb5ae