fixes to CW and quote conversion for mastodon

1 files changed, 5 insertions, 2 deletions

diff --git a/packages/backend/src/misc/append-content-warning.ts b/packages/backend/src/misc/append-content-warning.ts
index 152cd6760e..9f61776b1d 100644
--- a/packages/backend/src/misc/append-content-warning.ts
+++ b/packages/backend/src/misc/append-content-warning.ts
@@ -14,10 +14,13 @@
  * @param additional Content warning to append
  * @param reverse If true, then the additional CW will be prepended instead of appended.
  */
-export function appendContentWarning(original: string | null | undefined, additional: string, reverse = false): string {
+export function appendContentWarning(original: string | null | undefined, additional: string, reverse?: boolean): string;
+export function appendContentWarning(original: string, additional: string | null | undefined, reverse?: boolean): string;
+export function appendContentWarning(original: string | null | undefined, additional: string | null | undefined, reverse?: boolean): string | null;
+export function appendContentWarning(original: string | null | undefined, additional: string | null | undefined, reverse = false): string | null {
 	// Easy case - if original is empty, then additional replaces it.
 	if (!original) {
-		return additional;
+		return additional ?? null;
 	}
 
 	// Easy case - if the additional CW is empty, then don't append it.