1 files changed, 11 insertions, 2 deletions

diff --git a/server/helpers/custom-validators/misc.ts b/server/helpers/custom-validators/misc.ts
index 83f50a7fe..b1291ba7a 100644
--- a/server/helpers/custom-validators/misc.ts
+++ b/server/helpers/custom-validators/misc.ts
@@ -1,8 +1,8 @@
-function exists (value) {
+function exists (value: any) {
   return value !== undefined && value !== null
 }
 
-function isArray (value) {
+function isArray (value: any) {
   return Array.isArray(value)
 }
 
@@ -12,3 +12,12 @@ export {
   exists,
   isArray
 }
+
+declare global {
+  namespace ExpressValidator {
+    export interface Validator {
+      exists,
+      isArray
+    }
+  }
+}