API Reference

C# — ReactDotNetCore.AspNetCore

Namespace: ReactDotNetCore.

Controller extensions

// Strongly typed (TComponent : IReactComponent). Component name = type name.
ReactDotNetCoreResult ReactView<TComponent>(this ControllerBase controller, object? model = null)

// String based.
ReactDotNetCoreResult ReactView(this ControllerBase controller, string component, object? model = null)

IReactComponent

Empty marker interface. Implement it with a type named after a view to enable ReactView<T>():

public sealed class Dashboard : IReactComponent;

ReactDotNetCoreResult : ActionResult

Member	Type	Notes
Component	string	The view/component name.
Model	object?	The model serialized to props.
Title	string?	Optional <title>; defaults to the component name.

AddReactDotNetCore

IServiceCollection AddReactDotNetCore(
    this IServiceCollection services,
    Action<ReactDotNetCoreOptions>? configure = null)

Registers options, the manifest provider, the renderer, the typed SSR client, and (unless LaunchSidecar = false) the sidecar hosted service. Auto-selects a free port when SidecarPort = 0.

ReactDotNetCoreOptions

See Configuration for the full table. Key members: SidecarPort, RenderTimeout, MaxSidecarRestarts, DevMode, PublicBasePath, ClientManifest, JsonOptions.

Services (resolvable from DI)

Type	Use
ReactDotNetCoreRenderer	RenderPageAsync(component, model, title, ct) → full HTML string.
ReactSsrClient	RenderAsync(component, propsJson, ct), WaitForReadyAsync(timeout, ct).
ViteManifestProvider	ResolveEntry(entryKey?) → { File, Css[] }.

---

JavaScript — @react-dotnetcore/runtime

ESM, with subpath exports.

@react-dotnetcore/runtime

function createRegistry(modules: GlobModules): ComponentRegistry
function registeredNames(registry: ComponentRegistry): string[]

const ROOT_ID: "react-dotnetcore-root"
const PROPS_ID: "react-dotnetcore-props"
const COMPONENT_ATTR: "reactDotnetcoreComponent"

type ComponentRegistry = Record<string, React.ComponentType<any>>
type GlobModules = Record<string, { default?: React.ComponentType<any> }>

createRegistry takes a Vite import.meta.glob(..., { eager: true }) result and keys components by file base name.

@react-dotnetcore/runtime/server

type ServerRenderer = (component: string, props: unknown) => string
function createServerRenderer(registry: ComponentRegistry): ServerRenderer

Returns the render(component, props) used by entry-server.tsx. Throws (with the list of known components) if a name isn't registered.

@react-dotnetcore/runtime/client

interface MountOptions { rootId?: string; propsId?: string }
function mount(registry: ComponentRegistry, opts?: MountOptions): void
function readProps(propsId?: string): unknown

mount reads the root element, parses embedded props, and calls hydrateRoot. No-ops if the root is absent.

@react-dotnetcore/runtime/node

function startFromEnv(): Promise<void>   // reads REACTDOTNETCORE_* env vars; used by ssr-server.mjs
function createSsrServer(opts: SsrServerOptions): http.Server          // production sidecar
function createDevServer(opts: DevServerOptions): Promise<{ httpServer, vite }>  // Vite HMR sidecar

interface SsrServerOptions { render: ServerRenderer; port: number; host?: string;
  maxBodyBytes?: number; onListen?: (port: number) => void }
interface DevServerOptions { root: string; port: number; host?: string;
  serverEntry?: string; onListen?: (port: number) => void }

Binary

react-dotnetcore-ssr — runs startFromEnv(). Equivalent to the two-line ssr-server.mjs. Same environment contract.

Sidecar HTTP endpoints

Method	Path	Body	Response
GET	/health	—	200 ok
POST	/render	{ component, props }	{ html } or { error }