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A modern runtime for JavaScript and TypeScript. https://deno.com/
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Divy Srivastava 0910be4d64
feat(ops): relational ops (#18023)
Join two independent ops into one. A fast impl of one + a slow callback
of another. Here's an example showing optimized paths for latin-1 via
fast call and the next-best fallback using V8 apis.

```rust
#[op(v8)]
fn op_encoding_encode_into_fallback(
  scope: &mut v8::HandleScope,
  input: serde_v8::Value,
// ...

#[op(fast, slow = op_encoding_encode_into_fallback)]
fn op_encoding_encode_into(
  input: Cow<'_, str>,
// ...
```

Benchmark results of the fallback path:
```
time target/release/deno run -A --unstable ./cli/tests/testdata/benches/text_encoder_into_perf.js
________________________________________________________
Executed in   70.90 millis    fish           external
   usr time   57.76 millis    0.23 millis   57.53 millis
   sys time   17.02 millis    1.28 millis   15.74 millis

target/release/deno_main run -A --unstable ./cli/tests/testdata/benches/text_encoder_into_perf.js
________________________________________________________
Executed in  154.00 millis    fish           external
   usr time   67.14 millis    0.26 millis   66.88 millis
   sys time   38.82 millis    1.47 millis   37.35 millis
```
2023-03-05 13:30:22 +05:30
.cargo fix: upgrade deno_ast to 0.23 (#17269) 2023-01-04 18:54:54 -05:00
.devcontainer chore: update devcontainer configuration (#15751) 2022-09-03 02:21:41 +02:00
.github test(wpt): implement process timeout, fix expectations update, and more... (#17892) 2023-03-02 23:05:17 +01:00
bench_util chore: forward v1.31.1 release commit to main (#17939) 2023-02-24 22:37:46 -05:00
cli refactor(runtime): remove 40_files.js, 40_write_file.js and 40_read_file.js (#18018) 2023-03-05 03:37:37 +00:00
core refactor(core): include_js_files! 'dir' option doesn't change specifiers (#18019) 2023-03-05 02:31:38 +00:00
ext feat(ops): relational ops (#18023) 2023-03-05 13:30:22 +05:30
lockfile fix(lockfile): don't touch lockfile is npm specifiers are identical (#17973) 2023-02-27 16:02:19 -04:00
ops feat(ops): relational ops (#18023) 2023-03-05 13:30:22 +05:30
runtime refactor(runtime): remove 40_files.js, 40_write_file.js and 40_read_file.js (#18018) 2023-03-05 03:37:37 +00:00
serde_v8 chore: forward v1.31.1 release commit to main (#17939) 2023-02-24 22:37:46 -05:00
test_ffi chore(ext/ffi): Use queueMicrotask in tests (#17954) 2023-02-26 17:34:57 +02:00
test_napi feat(node): stabilize Node-API (#17553) 2023-02-14 15:53:00 +01:00
test_util fix: lazily surface errors in package.json deps parsing (#17974) 2023-03-03 18:27:05 -04:00
third_party@ff2ffb4fd9 fix(lint): revert no-deprecated-api for Deno.run (#17880) 2023-02-22 16:14:53 +00:00
tools wpt: unlock nightly with --no-ignore (#17998) 2023-03-03 14:50:18 +01:00
.dlint.json chore: update dlint to v0.37.0 for GitHub Actions (#17295) 2023-01-16 17:17:18 +01:00
.dprint.json test(ext/node): more node compat tests (#17827) 2023-02-20 16:35:04 +01:00
.editorconfig editorconfig: Don't insert final newline in .out files (#1686) 2019-02-07 11:31:49 -05:00
.gitattributes fix(test): support typechecking docs with CRLF line endings (#12748) 2021-11-15 09:58:04 -05:00
.gitignore feat(npm): implement Node API (#13633) 2022-10-05 19:36:44 +05:30
.gitmodules feat(ext/ffi): Implement FFI fast-call trampoline with Dynasmrt (#15305) 2022-09-07 12:23:56 +05:30
.rustfmt.toml chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
Cargo.lock refactor(runtime): factor out deno_io extension crate (#18001) 2023-03-05 00:39:48 +00:00
Cargo.toml refactor(runtime): factor out deno_io extension crate (#18001) 2023-03-05 00:39:48 +00:00
LICENSE.md chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
README.md docs: use irm instead of iwr -useb (#15474) 2022-08-15 10:05:29 -04:00
Releases.md chore: forward v1.31.1 release commit to main (#17939) 2023-02-24 22:37:46 -05:00
rust-toolchain.toml chore: upgrade to Rust 1.67 (#17548) 2023-01-27 10:43:16 -05:00

Deno

Build Status - Cirrus Twitter handle Discord Chat

the deno mascot dinosaur standing in the rain

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):

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