Can I use this to speed up existing JavaScript methods?

Yes, by moving heavy logic into a Zig implementation and using these bindings, you can bypass the overhead of standard JS execution for performance-critical tasks.

What is the role of the .classes.ts file in Bun development?

The .classes.ts file acts as a definition schema that tells Bun's generator how to create the C++ and Zig boilerplate required to expose Zig structures as JavaScript classes.

What is the benefit of using the property caching feature?

Setting 'cache: true' in your class definition allows Bun to store results in a hidden slot, avoiding repeated calls to Zig logic for values that haven't changed.

How does memory management work with Zig-implemented JS classes?

It uses a dual-layered approach: deinit() handles resource cleanup, while finalize() is called by the JavaScriptCore garbage collector to destroy the Zig object instance.

Bun Zig-JS Class Generator

Name: Bun Zig-JS Class Generator
Author: oven-sh

byoven-sh

•

86,659

API開発

Generates high-performance JavaScriptCore class bindings from Zig implementations using Bun's codegen tools.

概要

This skill streamlines the process of bridging JavaScript and Zig within the Bun runtime environment by utilizing the .classes.ts bindings generator. It provides specialized patterns for defining class interfaces, managing memory through Zig's ownership model, handling JavaScriptCore (JSC) call frames, and implementing advanced property caching to ensure peak performance when implementing native JavaScript APIs.

主な機能

86,659 GitHub stars
Integrated memory management with Zig deinit and GC finalize cycles
High-performance property caching via WriteBarrier integration
Automated JSC binding generation using .classes.ts definition templates
Standardized Zig implementation patterns for JS constructors and methods
Typesafe error handling using Bun's JSError and JSGlobalObject patterns

ユースケース

Optimizing internal Bun APIs by bridging Zig logic to the JavaScriptCore engine
Implementing new Web APIs (like TextDecoder) within the Bun runtime
Creating high-performance Zig-backed JavaScript classes for native speed

概要

主な機能

86,659 GitHub stars
Integrated memory management with Zig deinit and GC finalize cycles
High-performance property caching via WriteBarrier integration
Automated JSC binding generation using .classes.ts definition templates
Standardized Zig implementation patterns for JS constructors and methods
Typesafe error handling using Bun's JSError and JSGlobalObject patterns

ユースケース

Optimizing internal Bun APIs by bridging Zig logic to the JavaScriptCore engine
Implementing new Web APIs (like TextDecoder) within the Bun runtime
Creating high-performance Zig-backed JavaScript classes for native speed