fix: copy button

src/data/event-parser.ts

@@ -3,6 +3,13 @@ import MarkdownIt from 'markdown-it';
 import { EventSchema } from './event-schema';
 import type { EventData, EventMetadata } from '../types/event';
 
+// gray-matter casts the source with Buffer.from() on every parse, and browsers have
+// no Buffer, so without this the client throws before the app mounts. The result is
+// only kept as an unused `orig` field, so a plain string stands in for it.
+if (typeof globalThis.Buffer === 'undefined') {
+  (globalThis as { Buffer?: unknown }).Buffer = { from: (value: string) => value };
+}
+
 const markdown = new MarkdownIt({ html: false, linkify: true, typographer: true });
 
 export function parseEventSource(source: string, sourceName = 'event'): EventData {