v1.2.0 (2026-07-02)

• Dependency: on Clojars
• Versioning: Break Versioning

Tengen v1.2 modernizes the Reagent backend for Reagent 2 and npm React/ReactDOM 19, and adds an experimental Reagent error-boundary API. Expected to be non-breaking for Tengen's public API; please test carefully if your app depends on React/Reagent lifecycle timing.

Please report unexpected problems to GitHub.

- Peter Taoussanis

Quick highlights:

• Reagent 2 + React 19 compatibility
• Experimental :catch error-boundary fallback support
• Better React DevTools/component-stack names and lifecycle error context
• Exported clj-kondo hooks for Tengen macros

Since v1.1.0 (2021-01-12)

Changes (please check!)

• [mod] Update Reagent internals for Reagent 2/React 19, including :display-name, StrictMode-tolerant :let-mount lifecycle state, and clearer lifecycle error wrapping [b6bfdbc]
• [mod] Update dependencies: Reagent 2.0.1, ClojureScript 1.12.145, Clojure 1.12.5, Encore 3.168.0, Truss 2.3.0; test against npm React/ReactDOM 19.2.7 [430cc6d] [06fc9c4]
• [mod] Sync project, README, and GitHub workflow style with modern Taoensso libs; add CLJ/CLJS/Graal CI workflows [61e3d22]
• [mod] Drop Clojure 1.9 testing [61e3d22]

New

• [new] Add experimental :catch error-boundary fallback support for Reagent components [2a78589]
• [new] Add React 19 StrictMode smoke tests via shadow-cljs/jsdom [06fc9c4]
• [new] Add exported clj-kondo hooks for cmptfn/def-cmptfn binding forms [0428027]
• [new] Add cljdoc config [4db04bc]

Docs

• [doc] Document React ref callback pattern for DOM nodes, avoiding removed DOM lookup helpers [2325718]
• [doc] Document experimental :catch API, caveats, and StrictMode dev warning [2a78589]