microsoft-webui-handler
High-performance template renderer for the WebUI framework. Consumes the compiled binary protocol and produces HTML output at request time.
Overview
microsoft-webui-handler evaluates expressions, resolves state bindings, and renders full or partial HTML responses from pre-compiled WebUI protocol buffers — with no JavaScript runtime required.
Key Functions
Protocol::render_partial
Returns a complete client-navigation response with active-route projected state.
Protocol::render_component_templates
Returns compiled templates and CSS for specific components by tag name. Used for on-demand loading of components not in the route tree (dialogs, overlays). Supports inventory-based deduplication.
let result = protocol.render_component_templates;
// Returns: { templates: [...], templateStyles: [...], inventory: "..." }
Available via all bindings: Rust (Protocol::render_component_templates), Node/WASM/npm (Protocol.renderComponentTemplates), and FFI (webui_protocol_render_component_templates).
Documentation
See the WebUI repository for full usage guides and examples.
License
MIT — Copyright (c) Microsoft Corporation.