[Blazor] Disable built-in HotReload when environment variable is set (#62735)

maraf · web-flow · commit 4d5e043cd195 · 2025-07-17T14:16:52.000+02:00
diff --git a/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHost.cs b/src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHost.cs
@@ -139,7 +139,7 @@ internal async Task RunAsyncCore(CancellationToken cancellationToken, WebAssembl
         manager.SetPlatformRenderMode(RenderMode.InteractiveWebAssembly);
         await manager.RestoreStateAsync(store);
 
-        if (MetadataUpdater.IsSupported)
+        if (MetadataUpdater.IsSupported && Environment.GetEnvironmentVariable("__BLAZOR_WEBASSEMBLY_LEGACY_HOTRELOAD") != "false")
         {
             await WebAssemblyHotReload.InitializeAsync();
         }

Original file line number	Diff line number	Diff line change
`@@ -139,7 +139,7 @@ internal async Task RunAsyncCore(CancellationToken cancellationToken, WebAssembl`
`139`	`139`	`manager.SetPlatformRenderMode(RenderMode.InteractiveWebAssembly);`
`140`	`140`	`await manager.RestoreStateAsync(store);`
`141`	`141`
`142`		`- if (MetadataUpdater.IsSupported)`
	`142`	`+ if (MetadataUpdater.IsSupported && Environment.GetEnvironmentVariable("__BLAZOR_WEBASSEMBLY_LEGACY_HOTRELOAD") != "false")`
`143`	`143`	`{`
`144`	`144`	`await WebAssemblyHotReload.InitializeAsync();`
`145`	`145`	`}`