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fix: harden review findings and Netlify install

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This commit is contained in:
Josh Creek
2026-09-14 12:56:09 +01:00
parent 86f1c21e4d
commit 3ea194f87c
18 changed files with 171 additions and 7759 deletions
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static/offline-worker.js
+11 -1
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@@ -3,6 +3,7 @@ const OFFLINE_META_CACHE = `${OFFLINE_CACHE_PREFIX}meta-v1`;
const OFFLINE_META_URL = '/__offline/current';
let offlineEpoch = 0;
let offlineOperation = Promise.resolve();
let claimedUserId = null;
function queueOfflineOperation(operation) {
const result = offlineOperation.then(operation, operation);
@@ -63,6 +64,7 @@ async function cacheArtwork(cache, urls) {
self.addEventListener('message', (event) => {
const reply = (value) => event.ports[0]?.postMessage(value);
if (event.data?.type === 'CLEAR_OFFLINE_DATA') {
claimedUserId = null;
offlineEpoch++;
event.waitUntil(
queueOfflineOperation(async () => {
@@ -75,10 +77,14 @@ self.addEventListener('message', (event) => {
return;
}
if (event.data?.type === 'CLAIM_OFFLINE_USER') {
if (typeof event.data.userId !== 'string') {
reply({ ok: false, error: 'Invalid offline cache owner' });
return;
}
claimedUserId = event.data.userId;
offlineEpoch++;
event.waitUntil(
queueOfflineOperation(async () => {
if (typeof event.data.userId !== 'string') throw new Error('Invalid offline cache owner');
const meta = await currentOfflineMeta();
if (meta?.userId && meta.userId !== event.data.userId) {
await clearOfflineData();
@@ -91,6 +97,7 @@ self.addEventListener('message', (event) => {
}
if (event.data?.type !== 'SYNC_OFFLINE_SNAPSHOT') return;
const syncEpoch = offlineEpoch;
const syncUserId = claimedUserId;
event.waitUntil(
queueOfflineOperation(async () => {
@@ -101,6 +108,9 @@ self.addEventListener('message', (event) => {
if (!snapshot || snapshot.version !== 1 || typeof snapshot.userId !== 'string') {
throw new Error('Unsupported offline snapshot');
}
if (!syncUserId || snapshot.userId !== syncUserId) {
throw new Error('Offline snapshot owner did not match the claimed account');
}
const previousMeta = await currentOfflineMeta();
if (previousMeta?.userId && previousMeta.userId !== snapshot.userId)
await clearOfflineData();