ZeroReact.NET

Almost zero allocations and truly async alternative to ReactJS.NET

• Not supported On-the-fly JSX to JavaScript compilation (only AddScriptWithoutTransform for performance reasons)
• Not supported render functions (ReactJS.NET v4 feature) (planned)

Migration from ReactJS.NET

1. Make sure you use @await Html.PartialAsync and @await Html.RenderAsync on cshtml views, synchronous calls can deadlock application
2. Replace

• @Html.React to @await Html.ReactAsync
• @Html.ReactWithInit to @await ReactWithInitAsync
• @Html.ReactRouter to @await Html.ReactRouterAsync

3. Register ZeroReact in service collection, example here
4. Install native implementations of ChakraCore, without JavaScriptEngineSwitcher.ChakraCore, ZeroReact contains modified version of JavaScriptEngineSwitcher.ChakraCore for performance reasons

Benchmarks

Render Single Component

BenchmarkDotNet=v0.11.4, OS=Windows 10.0.15063.1387 (1703/CreatorsUpdate/Redstone2)
Intel Core i7-7700 CPU 3.60GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
Frequency=3515625 Hz, Resolution=284.4444 ns, Timer=TSC
.NET Core SDK=2.2.104
  [Host] : .NET Core 2.2.2 (CoreCLR 4.6.27317.07, CoreFX 4.6.27318.02), 64bit RyuJIT

Job=InProcess  Toolchain=InProcessToolchain  

Web Simulation

BenchmarkDotNet=v0.11.4, OS=Windows 10.0.15063.1387 (1703/CreatorsUpdate/Redstone2)
Intel Core i7-7700 CPU 3.60GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
Frequency=3515625 Hz, Resolution=284.4444 ns, Timer=TSC
.NET Core SDK=2.2.104
  [Host] : .NET Core 2.2.2 (CoreCLR 4.6.27317.07, CoreFX 4.6.27318.02), 64bit RyuJIT

Job=InProcess  Toolchain=InProcessToolchain