* undefined if the payload should be skipped entirely (all media already

* sent and no text remains).

*/

export function deduplicateBlockSentMedia(

payload: { mediaUrls?: string[]; text?: string; [key: string]: unknown },

export function deduplicateBlockSentMedia<T extends { mediaUrls?: string[]; text?: string }>(

payload: T,

sentBlockMediaUrls: ReadonlySet<string>,

): typeof payload | undefined {

): T | undefined {

if (!payload.mediaUrls?.length || sentBlockMediaUrls.size === 0) {

return payload;

}