Support for the Reatom v1001 reactive state manager in OpenIDE and IntelliJ IDEA — navigate the reactive graph right in the editor.
An open-source product under the Apache 2.0 license. Only Reatom v1001 is supported.
For atom / computed / action / effect declarations in a project the IDE
plugin provides:
- Code Lens — a summary line above a declaration: the unit's role and the
reactive-link counters (
atom · ↑4 · ↓2); - gutter icons — on a declaration, separate icons for readers and writers (a click opens a popup with the usages); on a usage line, an icon that jumps to the declaration;
- navigation "usage ↔ declaration", including across files.
The links come from static code analysis — without running the application.
A monorepo of two packages with a single Gradle build:
packages/ts-plugin(@openide/reatom-ts-plugin) — the reactive graph analyzer built on the TypeScript Compiler API. It parses the project and builds a JSON model:atom/computed/action/effectnodes andread/write/extendedges. esbuild packs it into a self-contained bundle.packages/ide-plugin— the IDE plugin on the IntelliJ platform (Kotlin). It draws the Code Lens, gutter icons and navigation, and ships the analyzer inside itself — the consumer needs no npm package, a@reatom/coredependency in the project is enough.
The repository is a single Gradle multi-project; build from the root:
# build the analyzer and the IDE plugin
./gradlew build
# run every test and static-analysis check (detekt, SpotBugs, ESLint)
./gradlew check
# the IDE plugin distribution → packages/ide-plugin/build/distributions/*.zip
./gradlew :ide-plugin:buildPluginGradle provisions everything itself — the JDK 21 toolchain, the IntelliJ IDEA
2025.3 platform, and the Node runtime for building the analyzer — so no
JAVA_HOME or SDK setup is needed (any JDK is enough to launch Gradle). The
plugin is not yet published to the marketplace — it is installed from the built
distribution.
examples/reatom-demo is a small @reatom/core consumer project — a toy
shopping cart covering atom / computed / action / effect, an extension,
and cross-file links. Open it in an IDE with the plugin to see the Code Lens
and gutter icons:
cd examples/reatom-demo && npm installpackages/ide-plugin/scripts/start-sandbox.sh brings up an IDE sandbox with
the plugin already installed and opens this demo by default.
Early development. Implemented:
- the reactive graph analyzer (
ts-plugin); - native Code Lens, gutter icons and navigation (
ide-plugin).
Diagnostics, quick-fixes, completion snippets, a graph toolwindow and more are planned but not yet implemented.
- FEATURES.md — the feature set and its status;
- AGENTS.md — project description and contributor working rules (the agents.md format).
Apache License 2.0. © 2026 Fedor Sazonov.