l0ng-ai 8eb4834a48 fix(lsp): Make the language server tests deterministic (#107)
`ide-lsp` tests failed intermittently (about 1 run in 4, more under load).

The main cause, requests from the other side starting before earlier notifications, is fixed on main by b5bc150; this adds a regression test for it in `ide-jsonrpc`, documents that `on_notification` must not wait for the remote side, and drops the 200 ms polling workaround in `ide-agent` that papered over the same race for `session/request_permission`.

Test-only races fixed: mock replies are held with a gate instead of fixed sleeps and timing asserts; the indexing-retry test ends indexing after the first reply; the crash test counts Ready/Crashed transitions instead of reading the last status; the mock records a notification and applies its effect under one lock; `eventually` waits up to a deadline; `tcp_server` reserves its port with a bound socket and waits for the server's start marker.

Claude-Session: https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
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OpenIDEA

The IDE you know, rebuilt in Rust.

Download  ·  Benchmark  ·  Build

https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0

OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.

Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.

Benchmark

Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:

OpenIDEA IntelliJ IDEA 2026.2.3
Window with the project 0.9 s 3.1 s
Ready (CPU settled) 1.1 s 13.2 s
Memory (USS, all processes) 169 MB 2011 MB
CPU time until ready 2.4 s 47.9 s
Idle CPU 4 % of a core 7 % of a core
Quit 0.3 s 5.9 s

A release build of OpenIDEA from main and IDEA with default settings and plugins, on Windows 11, 32-core AMD, 62 GB RAM. IDEA analyses Python more deeply, so "ready" doesn't mean the same work on both sides. Both are measured from the outside, the same way: see perf/compare to run it on your machine and projects.

Build

pnpm install
pnpm tauri dev

Rust 1.96, Node 22, pnpm and the Tauri prerequisites.

License

Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.

Not affiliated with JetBrains. IntelliJ IDEA is a trademark of JetBrains s.r.o.

S
Description
The IDE you know, rebuilt in Rust. IntelliJ IDEA–style keymap, tool windows and search-everywhere in a fast native app: editor, code insight, debugger, Git, terminal, database and HTTP clients for 60+ languages.
Readme Apache-2.0
60 MiB
Languages
TypeScript 56.4%
Rust 39.9%
CSS 2.2%
Python 0.5%
Java 0.4%
Other 0.4%