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fix(web): remove unload event listener to fix Chrome 146+ deprecation #924

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Merged
simolus3 merged 4 commits into from
Apr 21, 2026
Merged

fix(web): remove unload event listener to fix Chrome 146+ deprecation #924

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d72813d
fix(web): remove unload event listener to fix Chrome 146+ deprecation
JexanJoel Apr 4, 2026
eef2bbb
fix: remove unloadListener, deprecate externallyUnload flag, run pret…
JexanJoel Apr 7, 2026
61c6d28
Fix syntax errors
simolus3 Apr 21, 2026
a0eba9c
Add changeset
simolus3 Apr 21, 2026
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5 changes: 5 additions & 0 deletions .changeset/grumpy-monkeys-laugh.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
'@powersync/web': patch
---

Remove deprecated `unload` listener.
10 changes: 1 addition & 9 deletions packages/web/src/db/PowerSyncDatabase.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ import { AsyncDbAdapter } from './adapters/AsyncWebAdapter.js';

export interface WebPowerSyncFlags extends WebSQLFlags {
/**
* @deprecated This flag is no longer used. Navigator locks now handle tab detection automatically.
* Externally unload open PowerSync database instances when the window closes.
* Setting this to `true` requires calling `close` on all open PowerSyncDatabase
* instances before the window unloads
Expand Down Expand Up @@ -127,7 +128,6 @@ function assertValidDatabaseOptions(options: WebPowerSyncDatabaseOptions): void
export class PowerSyncDatabase extends AbstractPowerSyncDatabase {
static SHARED_MUTEX = new Mutex();

protected unloadListener?: () => Promise<void>;
protected resolvedFlags: WebPowerSyncFlags;

constructor(options: WebPowerSyncDatabaseOptionsWithAdapter);
Expand All @@ -140,11 +140,6 @@ export class PowerSyncDatabase extends AbstractPowerSyncDatabase {
assertValidDatabaseOptions(options);

this.resolvedFlags = resolveWebPowerSyncFlags(options.flags);

if (this.resolvedFlags.enableMultiTabs && !this.resolvedFlags.externallyUnload) {
this.unloadListener = () => this.close({ disconnect: false });
window.addEventListener('unload', this.unloadListener);
}
}

async _initialize(): Promise<void> {
Expand Down Expand Up @@ -190,9 +185,6 @@ export class PowerSyncDatabase extends AbstractPowerSyncDatabase {
* multiple tabs are not enabled.
*/
close(options?: PowerSyncCloseOptions): Promise<void> {
if (this.unloadListener) {
window.removeEventListener('unload', this.unloadListener);
}
return super.close({
// Don't disconnect by default if multiple tabs are enabled
disconnect: options?.disconnect ?? !this.resolvedFlags.enableMultiTabs
Expand Down