use slices.Contains.

internal/utils/array.go

@@ -1,14 +0,0 @@
-package utils
-
-func ArrayIn[T comparable](val T, array []T) (exists bool, index int) {
-	exists, index = false, -1
-
-	for i, a := range array {
-		if a == val {
-			exists, index = true, i
-			return
-		}
-	}
-
-	return
-}