refactor frontend warren move api

frontend/utils/index.ts

@@ -16,3 +16,14 @@ export function splitOnce(
 
     return [str.slice(0, index), str.slice(index + 1)];
 }
+
+export function trim(str: string, char: string) {
+    let start = 0;
+    let end = str.length;
+
+    while (start < end && str[start] === char) ++start;
+
+    while (end > start && str[end - 1] === char) --end;
+
+    return start > 0 || end < str.length ? str.substring(start, end) : str;
+}