Yeow

0.1.0

First public release of the Yeow runtime — run Minecraft Paper plugins written in TypeScript / JavaScript.

Features

• TypeScript / JavaScript plugins — modern frontend tooling (npm, esbuild) with full type inference; no Java needed to write a plugin
• One isolated JS thread per plugin (QuickJS engine) — plugin code never blocks the server main thread; a crashing plugin doesn't affect others
• Three-level priority scheduler (HIGH / NORMAL / LOW) with time-slice budgets, auto-demotion and idle-spin fast-path
• Hot reload in seconds — npm run dev starts Paper + WebSocket hot reload; source-map error mapping and async call-chain tracing in development
• Declarative permissions — fs:*, http:*, service:registerNative, assets:extract are denied by default until declared in the plugin manifest
• Platform-agnostic .yeow.zip packages — a plain ZIP runnable on any conforming runtime, not just JVM/Bukkit
• Plugin management commands — /yeow load | install | update | unload | uninstall | reload, one-click install from a URL
• Services — plugin-to-plugin services (global-unique, degrade-to-caller) and Native Service (embed Go / Rust / C++ binaries, spawned and managed over a TCP JSON-line protocol)
• Broad API surface — 38 bridged Bukkit events, 100+ game task types, GUI / BossBar / Scoreboard / PDC / Advancement / Recipe / HTTP server & client / fetch
• Runtime health diagnostics — heartbeat ping, event / tab-completion slow & timeout warnings, queue backlog / scheduler saturation detection with dynamic budget scaling
• QuickJS engine 2026-06-04 — resizable ArrayBuffer, Uint8Array.toBase64() / Uint8Array.fromBase64() (ES2026), set methods, faster on bench-v8

Bug Fixes

• plugin.hung never fired for plugins that were unresponsive since load — the silent baseline now starts at the first unresponsive window (30s detection works for fresh dead-locks)
• Duplicate Bukkit event listeners accumulated across hot reloads, multiplying the event wait timeout by N — each event type now registers exactly one listener

Requirements

• Paper 1.18+

Documentation

Chinese docs: https://yeow.yeside.top/