✅ use vitest for testing + new tests

Author: astoilkov

.eslintignore

@@ -1,2 +1,3 @@
 /test
 *.d.ts
+vitest.config.ts

index.ts

@@ -1,5 +1,5 @@
-import useSessionStorageState from './src/useSessionStorageState'
-import type { SessionStorageOptions, SessionStorageState } from './src/useSessionStorageState'
+import useSessionStorageState from './src/useSessionStorageState.js'
+import type { SessionStorageOptions, SessionStorageState } from './src/useSessionStorageState.js'
 
 export default useSessionStorageState