2 releases
new 0.1.1 | May 9, 2025 |
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0.1.0 | May 7, 2025 |
#204 in FFI
148 downloads per month
135KB
3.5K
SLoC
ferrosaur
ferrosaur derives statically-typed Rust code — à la wasm-bindgen — for
deno_core::JsRuntime
to interface with your JavaScript code.
If you have:
// lib.js
export const slowFib = (n) =>
n === 0 ? 0 : n === 1 ? 1 : slowFib(n - 1) + slowFib(n - 2);
... and you write:
// lib.rs
use ferrosaur::js;
#[js(module("lib.js"))]
struct Math;
#[js(interface)]
impl Math {
#[js(func)]
fn slow_fib(&self, n: serde<usize>) -> serde<usize> {}
}
... then you get:
// let rt: &mut JsRuntime;
let lib = Math::main_module_init(rt).await?;
let fib = lib.slow_fib(42, rt)?;
assert_eq!(fib, 267914296);
[!TIP]
This is like the inverse of
deno_core::op2
:
#[op2]
gives JavaScript programs easy access to your Rust implementation.- ferrosaur gives your Rust program easy access to JavaScript implementations.
License
This project is released under the Apache 2.0 License and the MIT License.
Dependencies
~0.6–1MB
~23K SLoC