add arrow convert

packages/utils/saferKorean.ts

@@ -175,6 +175,11 @@ export const GIFMap = {
     "images-ext-1.discordapp.net/external/2R41WcvNJwYMD69UKls2cDa_hEL-rzCRCFvOi2DDOVo/https/media.tenor.com/sU3RCOixDbgAAAPo/majo-no-tabitabi-the-journey-of-elaina.mp4": "일레이나 손짓",
 };
 
+export const Units = {
+    "㎢": "제곱킬로미터",
+    "㎡": "제곱미터",
+}
+
 export function processDots(input: string): string {
     return input.replace(/[\.,]+$/, "")
         .replace(/[\.,]{2,}/g, "")
@@ -333,8 +338,7 @@ export function saferKorean(input: string): string {
                 return FloatKorean.convert(num) + postfix;
             }
         })
-        .replace(/㎡/g, "제곱미터")
-        .replace(/㎢/g, "제곱킬로미터")
+        .replace(/[㎡㎢]/g, (content: string) => Units[content as keyof typeof Units])
 
         // Process symbol
         .replace(/[\%\^\&\*\#\@\.\-\+\_\=\/\\♡\$\|\:\;\>\<]/g, (t) => (
@@ -344,6 +348,7 @@ export function saferKorean(input: string): string {
         .replace(/[ \t\f\r]+/g, " ")
 
         // Process emoji
+        .replace(/[↑↓←→↓↔↕↖↗↘↙]/g, "화살표")
         .replace(/\p{Emoji}/u, " 이모지 ")
         .trim()
 }