Terminado sprint 2A

lib/storage.ts

@@ -0,0 +1,27 @@
+import type { FormAnswers } from './types'
+
+const PREFIX = 'survey_draft_'
+
+// Only store answer data — nothing identifiable about the respondent.
+export function saveDraft(surveyId: string, answers: FormAnswers): void {
+  try {
+    localStorage.setItem(PREFIX + surveyId, JSON.stringify(answers))
+  } catch {
+    // Storage quota or private-mode — silently ignore
+  }
+}
+
+export function loadDraft(surveyId: string): FormAnswers {
+  try {
+    const raw = localStorage.getItem(PREFIX + surveyId)
+    return raw ? (JSON.parse(raw) as FormAnswers) : {}
+  } catch {
+    return {}
+  }
+}
+
+export function clearDraft(surveyId: string): void {
+  try {
+    localStorage.removeItem(PREFIX + surveyId)
+  } catch {}
+}