[Blazor] Remove HotReload built-into Blazor WebAssembly #62777
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Co-authored-by: maraf <10020471+maraf@users.noreply.github.com>
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maraf
July 17, 2025 16:03
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Pull Request Overview
This PR removes the built-in HotReload functionality from Blazor WebAssembly.
- Deletes the WebAssemblyHotReload implementation and its initialization.
- Cleans up related MSBuild property and public API entries.
- Removes JavaScript/TypeScript interop methods for HotReload.
Reviewed Changes
Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| Microsoft.AspNetCore.Components.WebAssembly.props | Removed WebAssemblyHotReloadCapabilities MSBuild property |
| PublicAPI.Unshipped.txt | Removed HotReload API entries |
| PublicAPI.Shipped.txt | Removed HotReload API entries |
| HotReload/WebAssemblyHotReload.cs | Deleted the entire HotReload implementation class |
| Hosting/WebAssemblyHost.cs | Removed HotReload initialization block and unused usings |
| src/Components/Web.JS/src/GlobalExports.ts | Removed TypeScript interface definitions for HotReload |
| src/Components/Web.JS/src/Boot.WebAssembly.Common.ts | Removed JavaScript interop methods for HotReload |
maraf
reviewed
Jul 18, 2025
| @@ -80,7 +80,6 @@ Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyHostConfiguration | |||
| Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyHostConfiguration.this[string! key].set -> void | |||
| Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyHostConfiguration.WebAssemblyHostConfiguration() -> void | |||
| Microsoft.AspNetCore.Components.WebAssembly.Hosting.WebAssemblyHostEnvironmentExtensions | |||
| Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload | |||
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Instead of removing APIs from here, mark them as removed in PublicAPI.Unshipped.txt
Documentation says:
Removed APIs
A new entry needs to be added to the PublicAPI.Unshipped.txt file for a removed API. For example:
#nullable enable
*REMOVED*Microsoft.Builder.OldApplicationBuilder.New() -> Microsoft.AspNetCore.Builder.IApplicationBuilder!
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Fixed in commit 2805982. The HotReload APIs are now marked as REMOVED in PublicAPI.Unshipped.txt instead of being deleted from PublicAPI.Shipped.txt.
…eting Co-authored-by: maraf <10020471+maraf@users.noreply.github.com>
javiercn
approved these changes
Jul 18, 2025
pavelsavara
approved these changes
Jul 18, 2025
|
/ba-g |
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Do not merge before dotnet/sdk#49800
This PR removes the built-in HotReload functionality from Blazor WebAssembly as requested in the issue.
Changes Made
Removed Files
src/Components/WebAssembly/WebAssembly/src/HotReload/WebAssemblyHotReload.cs- The main HotReload implementation classsrc/Components/WebAssembly/WebAssembly/src/HotReload/- Empty directory after file removalUpdated Files
PublicAPI.Shipped.txt - Removed 3 HotReload-related public API entries:
Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReloadApplyHotReloadDeltamethodGetApplyUpdateCapabilitiesmethodPublicAPI.Unshipped.txt - Removed 19 HotReload-related entries:
WebAssemblyHotReload.Deltastruct and all its propertiesWebAssemblyHotReload.LogEntrystruct and all its propertiesApplyHotReloadDeltasmethodBoot.WebAssembly.Common.ts - Removed JavaScript interop methods:
applyHotReload(obsolete method)applyHotReloadDeltasgetApplyUpdateCapabilitiesGlobalExports.ts - Removed TypeScript interface definitions for the removed methods
WebAssemblyHost.cs - Removed:
using Microsoft.AspNetCore.Components.WebAssembly.HotReload;using System.Reflection.Metadata;(now unused)Microsoft.AspNetCore.Components.WebAssembly.props - Removed
WebAssemblyHotReloadCapabilitiespropertyImpact
This is a clean removal of the self-contained WebAssembly HotReload functionality without affecting:
Testing
Fixes #62776.
Fixes #62371.
Contributes to #61272
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