Crate javy

Configurable JavaScript runtime for WebAssembly.

Example usage:

let runtime = Runtime::default();
let context = runtime.context();
context
    .global_object()
    .unwrap()
    .set_property(
        "print",
        context
            .wrap_callback(move |_ctx, _this, args| {
                let str = args
                    .first()
                    .ok_or(anyhow!("Need to pass an argument"))?
                    .to_string();
                println!("{str}");
                Ok(JSValue::Undefined)
            })
            .unwrap(),
    )
    .unwrap();
context.eval_global("hello.js", "print('hello!');").unwrap();

Core concepts

• Runtime - The entrypoint for using the JavaScript runtime. Use a Config to configure behavior.

Features

• export_alloc_fns - exports alloc::canonical_abi_realloc and alloc::canonical_abi_free from generated WebAssembly for allocating and freeing memory
• json - functions for converting between quickjs::JSValueRef and JSON byte slices
• messagepack - functions for converting between quickjs::JSValueRef and MessagePack byte slices

Re-exports

• pub use quickjs_wasm_rs as quickjs;

Modules

• alloc

Structs

• Config
  A configuration for Runtime.
• Runtime
  A JavaScript Runtime.