feat: Init

app/lib/cursor.ts

@@ -0,0 +1,14 @@
+interface CursorData {
+  timestamp: number
+  id: string
+}
+
+export function encodeCursor(timestamp: number, id: string): string {
+  const data: CursorData = { timestamp, id }
+  return Buffer.from(JSON.stringify(data)).toString('base64')
+}
+
+export function decodeCursor(cursor: string): CursorData {
+  const data = JSON.parse(Buffer.from(cursor, 'base64').toString())
+  return data as CursorData
+}