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A modern runtime for JavaScript and TypeScript.
https://deno.com/
d3e107768a
When a dynamically imported module gets resolved, any code that comes after an await import() to that module will continue running. However, if that is the last code in the evaluation of another dynamically imported module, that second module will not resolve until the next iteration of the event loop, even though it does not depend on the event loop at all. When the event loop is being blocked by a long-running operation, such as a long-running timer, or by an async op that might never end, such as with workers or BroadcastChannels, that will result in the second dynamically imported module not being resolved for a while, or ever. This change fixes this by running the dynamic module loading steps in a loop until no more dynamic modules can be resolved. |
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.cargo | ||
.devcontainer | ||
.github | ||
bench_util | ||
cli | ||
core | ||
docs | ||
ext | ||
ops | ||
runtime | ||
serde_v8 | ||
snapshots | ||
test_ffi | ||
test_util | ||
third_party@c9954bdb27 | ||
tools | ||
.dlint.json | ||
.dprint.json | ||
.editorconfig | ||
.gitattributes | ||
.gitignore | ||
.gitmodules | ||
.rustfmt.toml | ||
Cargo.lock | ||
Cargo.toml | ||
CODE_OF_CONDUCT.md | ||
LICENSE.md | ||
README.md | ||
Releases.md | ||
rust-toolchain.toml | ||
SECURITY.md |
Deno
Deno is a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust.
Features
- Secure by default. No file, network, or environment access, unless explicitly enabled.
- Supports TypeScript out of the box.
- Ships only a single executable file.
- Built-in utilities.
- Set of reviewed standard modules that are guaranteed to work with Deno.
Install
Shell (Mac, Linux):
curl -fsSL https://deno.land/install.sh | sh
PowerShell (Windows):
iwr https://deno.land/install.ps1 -useb | iex
Homebrew (Mac):
brew install deno
Chocolatey (Windows):
choco install deno
Scoop (Windows):
scoop install deno
Build and install from source using Cargo:
cargo install deno --locked
See deno_install and releases for other options.
Getting Started
Try running a simple program:
deno run https://deno.land/std/examples/welcome.ts
Or a more complex one:
const listener = Deno.listen({ port: 8000 });
console.log("http://localhost:8000/");
for await (const conn of listener) {
serve(conn);
}
async function serve(conn: Deno.Conn) {
for await (const { respondWith } of Deno.serveHttp(conn)) {
respondWith(new Response("Hello world"));
}
}
You can find a deeper introduction, examples, and environment setup guides in the manual.
The complete API reference is available at the runtime documentation.
Contributing
We appreciate your help!
To contribute, please read our contributing instructions.