refactor(web): dependency management (#2386)

packages/snjs/lib/Services/Protection/isValidProtectionSessionLength.ts

@@ -0,0 +1,5 @@
+import { UnprotectedAccessSecondsDuration } from './UnprotectedAccessSecondsDuration'
+
+export function isValidProtectionSessionLength(number: unknown): boolean {
+  return typeof number === 'number' && Object.values(UnprotectedAccessSecondsDuration).includes(number)
+}