Example of executing ES module exports from Rust

Divy Srivastava

Last update: Dec 13, 2022

Related tags

Utilities rust v8 runtime serde hacktoberfest deno

Overview

rusty_esm

This is an example showcasing a common use case for embedding Deno - calling JS module exports from Rust. The rest is pretty self explainatory:

// main.rs
#[derive(Debug, Deserialize)]
struct ApiResponse {
  user_id: isize,
  id: isize,
  title: String,
  completed: bool,
}

let mut rt = Runtime::new("testdata/basic.js").await?;
let id = 5;
let value: ApiResponse = rt.call("getStuff", &[id]).await?;

// testdata/basic.js
export async function getStuff(id) {
  const r = await fetch("https://jsonplaceholder.typicode.com/todos/" + id);
  return await r.json();
}

$ target/debug/deno_embed
ApiResponse {
    user_id: 0,
    id: 5,
    title: "laboriosam mollitia et enim quasi adipisci quia provident illum",
    completed: false,
}

Benchmarks

Measured for Runtime::call in example scenarios. See src/main.rs.

test tests::bench_call         ... bench:       4,429 ns/iter (+/- 1,139)
test tests::bench_call_promise ... bench:       4,609 ns/iter (+/- 306)

License

MIT

k-mer counter in Rust using the rust-bio and rayon crates

krust is a k-mer counter written in Rust and run from the command line that will output canonical k-mers and their frequency across the records in a f

14 Jan 7, 2023

Experimental Rust tool for generating FFI definitions allowing many other languages to call Rust code

Diplomat is an experimental Rust tool for generating FFI definitions allowing many other languages to call Rust code. With Diplomat, you can simply define Rust APIs to be exposed over FFI and get high-level C, C++, and JavaScript bindings automatically!

255 Dec 30, 2022

Aws-sdk-rust - AWS SDK for the Rust Programming Language

The AWS SDK for Rust This repo contains the new AWS SDK for Rust (the SDK) and its public roadmap. Please Note: The SDK is currently released as a dev

2k Jan 3, 2023

Rust + Yew + Axum + Tauri, full-stack Rust development for Desktop apps.

rust-yew-axum-tauri-desktop template Rust + Yew + Axum + Tauri, full-stack Rust development for Desktop apps. Crates frontend: Yew frontend app for de

54 Dec 23, 2022

A lightning fast version of tmux-fingers written in Rust, copy/pasting tmux like vimium/vimperator

tmux-thumbs A lightning fast version of tmux-fingers written in Rust for copy pasting with vimium/vimperator like hints. Usage Press ( prefix + Space

598 Jan 2, 2023

A command-line tool collection to assist development written in RUST

dtool dtool is a command-line tool collection to assist development Table of Contents Description Usage Tips Installation Description Now dtool suppor

314 Dec 18, 2022

Rust mid-level IR Abstract Interpreter

MIRAI MIRAI is an abstract interpreter for the Rust compiler's mid-level intermediate representation (MIR). It is intended to become a widely used sta

793 Jan 2, 2023

Migrate C code to Rust

C2Rust helps you migrate C99-compliant code to Rust. The translator (or transpiler) produces unsafe Rust code that closely mirrors the input C code. T