diff --git a/src/utils/functions/index.ts b/src/utils/functions/index.ts
index 4d992cc..3cafec7 100644
--- a/src/utils/functions/index.ts
+++ b/src/utils/functions/index.ts
@@ -62,7 +62,7 @@ export const capitalizeFirstLetter = (string: string) => {
 /**
  * Create a delay
  */
-export function sleep (milliseconds: number) {
+export const sleep = (milliseconds: number) => {
     return new Promise(resolve => setTimeout(resolve, milliseconds))
 }
 
diff --git a/src/utils/stores/index.ts b/src/utils/stores/index.ts
index 223e573..f3d1026 100644
--- a/src/utils/stores/index.ts
+++ b/src/utils/stores/index.ts
@@ -1,4 +1,4 @@
-import { writable } from 'svelte/store'
+import { writable, type Writable } from 'svelte/store'
 
-export const pageLoading = writable(false)
-export const previousPage = writable('')
\ No newline at end of file
+export const pageLoading: Writable<boolean> = writable(false)
+export const previousPage: Writable<string> = writable('')
\ No newline at end of file