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A modern runtime for JavaScript and TypeScript. https://deno.com/
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Kyle Kelley 8698e80304
refactor(jupyter): use runtimelib for Jupyter structures and directory paths (#23826)
This brings in [`runtimelib`](https://github.com/runtimed/runtimed) to
use:

## Fully typed structs for Jupyter Messages

```rust
let msg = connection.read().await?;

self
  .send_iopub(
    runtimelib::Status::busy().as_child_of(msg),
  )
  .await?;
```

## Jupyter paths

Jupyter paths are implemented in Rust, allowing the Deno kernel to be
installed completely via Deno without a requirement on Python or
Jupyter. Deno users will be able to install and use the kernel with just
VS Code or other editors that support Jupyter.

```rust
pub fn status() -> Result<(), AnyError> {
  let user_data_dir = user_data_dir()?;

  let kernel_spec_dir_path = user_data_dir.join("kernels").join("deno");
  let kernel_spec_path = kernel_spec_dir_path.join("kernel.json");

  if kernel_spec_path.exists() {
    log::info!(" Deno kernel already installed");
    Ok(())
  } else {
    log::warn!("ℹ️ Deno kernel is not yet installed, run `deno jupyter --install` to set it up");
    Ok(())
  }
}
```

Closes https://github.com/denoland/deno/issues/21619
2024-05-21 22:35:21 +02:00
.cargo feat: bring back WebGPU (#20812) 2023-12-09 01:19:16 +01:00
.devcontainer fix(devcontainer): moved settings to customizations/vscode (#21512) 2023-12-19 13:29:39 +01:00
.github chore: forward v1.43.5 release commit to main (#23877) 2024-05-17 21:49:44 -04:00
bench_util chore: forward v1.43.4 commit to main (#23861) 2024-05-17 03:57:53 +02:00
cli refactor(jupyter): use runtimelib for Jupyter structures and directory paths (#23826) 2024-05-21 22:35:21 +02:00
ext fix(ext/web): fix potential leak of unread buffers (#23923) 2024-05-21 17:45:33 +00:00
runtime feat(serve): support --port 0 to use an open port (#23846) 2024-05-17 05:38:50 +00:00
tests refactor(jupyter): use runtimelib for Jupyter structures and directory paths (#23826) 2024-05-21 22:35:21 +02:00
tools chore: fix flaky rejection_handled_web_process (#23817) 2024-05-14 23:51:51 +00:00
.dlint.json chore: update dlint to v0.37.0 for GitHub Actions (#17295) 2023-01-16 17:17:18 +01:00
.dprint.json chore(test): move npm registries to separate servers and to the tests/registry folder (#23717) 2024-05-07 01:06:01 +00:00
.editorconfig chore(tests): Remove vestiges of cli/tests folder (#22712) 2024-03-05 13:49:21 -07:00
.gitattributes chore: move cli/tests/ -> tests/ (#22369) 2024-02-10 20:22:13 +00:00
.gitignore chore: move tools/wpt to tests/wpt/runner (#22545) 2024-03-05 00:41:16 +00:00
.gitmodules chore: make remaining submodules shallow (#23441) 2024-04-18 19:45:09 +00:00
.rustfmt.toml chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
Cargo.lock refactor(jupyter): use runtimelib for Jupyter structures and directory paths (#23826) 2024-05-21 22:35:21 +02:00
Cargo.toml chore: bump deno_http version (#23866) 2024-05-17 15:50:49 +00:00
LICENSE.md chore: update LICENSE.md to 2024 (#21833) 2024-01-06 19:14:38 -05:00
README.md chore: update references to deno_std to use JSR (#23239) 2024-04-10 17:26:35 -04:00
Releases.md chore: forward v1.43.5 release commit to main (#23877) 2024-05-17 21:49:44 -04:00
rust-toolchain.toml chore: update to Rust 1.77.2 (#23262) 2024-04-10 22:08:23 +00:00

Deno

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the deno mascot dinosaur standing in the rain

Deno (/ˈdiːnoʊ/, pronounced dee-no) is a JavaScript, TypeScript, and WebAssembly runtime with secure defaults and a great developer experience. It's built on V8, Rust, and Tokio.

Learn more about the Deno runtime in the documentation.

Installation

Install the Deno runtime on your system using one of the commands below. Note that there are a number of ways to install Deno - a comprehensive list of installation options can be found here.

Shell (Mac, Linux):

curl -fsSL https://deno.land/install.sh | sh

PowerShell (Windows):

irm https://deno.land/install.ps1 | iex

Homebrew (Mac):

brew install deno

Chocolatey (Windows):

choco install deno

Build and install from source

Complete instructions for building Deno from source can be found in the manual here.

Your first Deno program

Deno can be used for many different applications, but is most commonly used to build web servers. Create a file called server.ts and include the following TypeScript code:

Deno.serve((_req: Request) => {
  return new Response("Hello, world!");
});

Run your server with the following command:

deno run --allow-net server.ts

This should start a local web server on http://localhost:8000.

Learn more about writing and running Deno programs in the docs.

Additional resources

Contributing

We appreciate your help! To contribute, please read our contributing instructions.