otter-jsc-sys

Raw FFI bindings to JavaScriptCore C API.

Overview

This crate provides low-level unsafe bindings to JavaScriptCore (JSC), the JavaScript engine used by WebKit and Safari. It supports multiple platforms:

• macOS: Uses the system JavaScriptCore framework
• Linux: Uses pre-built bun-webkit binaries (statically linked)
• Windows: Uses pre-built bun-webkit binaries (statically linked)

Usage

This crate is intended for use by higher-level wrappers. For safe Rust APIs, use the otter-jsc-core or otter-runtime crates instead.

use otter_jsc_sys::*;

unsafe {
    let ctx = JSGlobalContextCreate(std::ptr::null_mut());
    // ... use JSC APIs
    JSGlobalContextRelease(ctx);
}

Platform Support

Build Requirements

macOS

No additional dependencies required.

Linux & Windows

The build script automatically downloads pre-built bun-webkit binaries from oven-sh/WebKit.

Environment Variables

• BUN_WEBKIT_VERSION: Override the default bun-webkit version

License

MIT