add to svelte-html

packages/svelte/svelte-html.d.ts

@@ -244,6 +244,10 @@ declare global {
 			'svelte:document': HTMLProps<'svelte:document', HTMLAttributes>;
 			'svelte:fragment': { slot?: string };
 			'svelte:head': { [name: string]: any };
+			'svelte:boundary': {
+				onerror?: (error: unknown, reset: () => void) => void;
+				failed?: import('svelte').Snippet<[error: unknown, reset: () => void]>;
+			};
 			// don't type svelte:options, it would override the types in svelte/elements and it isn't extendable anyway
 
 			[name: string]: { [name: string]: any };