From c68a9d15861f382bd59848163feaa574db3cdc96 Mon Sep 17 00:00:00 2001
From: Przemek Wiech <pwiech@gmail.com>
Date: Tue, 9 Jul 2019 00:20:39 +0200
Subject: [PATCH] Do not fail when sessionStorage is not available.

Fixes https://github.com/PeWu/topola-webtrees/issues/1
---
 src/load_data.ts | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/src/load_data.ts b/src/load_data.ts
index ddc0461..6a4f1cc 100644
--- a/src/load_data.ts
+++ b/src/load_data.ts
@@ -36,9 +36,13 @@ export async function loadFromUrl(
   url: string,
   handleCors: boolean,
 ): Promise<TopolaData> {
-  const cachedData = sessionStorage.getItem(url);
-  if (cachedData) {
-    return JSON.parse(cachedData);
+  try {
+    const cachedData = sessionStorage.getItem(url);
+    if (cachedData) {
+      return JSON.parse(cachedData);
+    }
+  } catch (e) {
+    console.warn('Failed to load data from session storage: ' + e);
   }
   const urlToFetch = handleCors
     ? 'https://cors-anywhere.herokuapp.com/' + url
@@ -58,9 +62,13 @@ export async function loadGedcom(
   gedcom?: string,
   images?: Map<string, string>,
 ): Promise<TopolaData> {
-  const cachedData = sessionStorage.getItem(hash);
-  if (cachedData) {
-    return JSON.parse(cachedData);
+  try {
+    const cachedData = sessionStorage.getItem(hash);
+    if (cachedData) {
+      return JSON.parse(cachedData);
+    }
+  } catch (e) {
+    console.warn('Failed to load data from session storage: ' + e);
   }
   if (!gedcom) {
     throw new Error('Error loading data. Please upload your file again.');