Strata

Selector-driven projection from a tree to a value space, with cascade resolution when multiple selectors match the same node.

A general-purpose .NET engine that subsumes:

• CSS-style styling of arbitrary object trees
• IE5-HTC-style behavior attachment
• JSONPath-driven routing over reducer state
• Schema-rule systems
• Vim-style keymap binding to nodes by predicate

The core knows nothing about styling, rendering, or HTML. It knows about trees, selectors, matches, cascade, and projection.

Status

Pre-alpha. Phase 3 shipped — CSS subset selectors, cascade with specificity/inheritance/hot-reload, the built-in styling property set, and a Spectre.Console projection, AOT-verified end-to-end. Layout (Yoga), interactions, JSONPath, and the Terminal.Gui projection are still ahead. See docs/04-plan.md for the roadmap.

Install

Packages publish to NuGet under the StandardBeagle.Strata.* prefix as prereleases:

dotnet add package StandardBeagle.Strata.Core --prerelease
dotnet add package StandardBeagle.Strata.Css --prerelease
dotnet add package StandardBeagle.Strata.Properties.Styling --prerelease
dotnet add package StandardBeagle.Strata.Render.Spectre --prerelease
# adapters
dotnet add package StandardBeagle.Strata.Adapters.JsonNode --prerelease
dotnet add package StandardBeagle.Strata.Adapters.PSObject --prerelease

(The C# namespaces remain Strata.*; only the package IDs carry the StandardBeagle. prefix.)

Documentation

• Requirements
• Specification
• Technical design
• Plan
• Interaction redesign — supersedes the Phase 5/6 behavior model

Target framework

.NET 10.0+ (Native AOT compatible).

License

MIT