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A modern runtime for JavaScript and TypeScript. https://deno.com/
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Marcos Casagrande d0525dd692 perf(ext/headers): use regex.test instead of .exec (#20125)
This PR improves the performance of `Headers.get` by using `Regex.test`
instead of `.exec`. Also replaced the `Map` used for caching with an
object which is a bit faster

**This patch**

```
cpu: 13th Gen Intel(R) Core(TM) i9-13900H
runtime: deno 1.36.1 (x86_64-unknown-linux-gnu)

benchmark              time (avg)        iter/s             (min … max)       p75       p99      p995
----------------------------------------------------------------------- -----------------------------
Headers.get           124.71 ns/iter   8,018,687.3 (115.11 ns … 265.66 ns) 126.05 ns 136.12 ns 142.37 ns
```

**1.36.1**

```
cpu: 13th Gen Intel(R) Core(TM) i9-13900H
runtime: deno 1.36.0 (x86_64-unknown-linux-gnu)

benchmark              time (avg)        iter/s             (min … max)       p75       p99      p995
----------------------------------------------------------------------- -----------------------------
Headers.get           218.91 ns/iter   4,568,172.3 (165.37 ns … 264.44 ns) 241.62 ns 260.94 ns 262.67 ns
```

```js
const headers = new Headers({
  "Content-Type": "application/json",
  "Date": "Thu, 10 Aug 2023 07:45:10 GMT",
  "X-Deno": "Deno",
  "Powered-By": "Deno",
  "Content-Encoding": "gzip",
  "Set-Cookie": "__Secure-ID=123; Secure; Domain=example.com",
  "Content-Length": "150",
  "Vary": "Accept-Encoding, Accept, X-Requested-With",
});

Deno.bench("Headers.get", () => {
  headers.get("x-deno");
});
```
2023-08-21 18:23:27 +05:30
.cargo fix: reload config files on watcher restarts (#19487) 2023-06-14 22:29:19 +00:00
.devcontainer chore: update devcontainer configuration (#15751) 2022-09-03 02:21:41 +02:00
.github 1.36.1 (#20221) 2023-08-21 18:08:38 +05:30
bench_util 1.36.1 (#20221) 2023-08-21 18:08:38 +05:30
cli fix(node): implement TLSSocket._start (#20120) 2023-08-21 18:23:27 +05:30
ext perf(ext/headers): use regex.test instead of .exec (#20125) 2023-08-21 18:23:27 +05:30
runtime 1.36.1 (#20221) 2023-08-21 18:08:38 +05:30
test_ffi chore: update to Rust 1.71 (#19822) 2023-07-13 15:16:24 -06:00
test_napi fix(node): don't print warning on process.dlopen.flags (#20124) 2023-08-21 18:23:27 +05:30
test_util chore: upgrade fastwebsockets to 0.4.4 (#19089) 2023-08-10 09:59:06 +05:30
third_party@7f1a41fee1 chore: upgrade to dprint 0.40 internally (#19998) 2023-07-31 17:10:10 +02:00
tools fix(ext/abort): trigger AbortSignal events in correct order (#20095) 2023-08-08 12:05:42 +02:00
.dlint.json chore: update dlint to v0.37.0 for GitHub Actions (#17295) 2023-01-16 17:17:18 +01:00
.dprint.json fix(fmt): do not insert expr stmt leading semi-colon in do while stmt body (#20093) 2023-08-08 09:15:19 -04:00
.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(cli): Adding JUnit test reports (#19747) 2023-07-27 00:12:35 +02:00
.gitmodules chore: check node_compat config diff in CI (#19119) 2023-05-15 21:22:53 +09:00
.rustfmt.toml chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
Cargo.lock 1.36.1 (#20221) 2023-08-21 18:08:38 +05:30
Cargo.toml 1.36.1 (#20221) 2023-08-21 18:08:38 +05:30
LICENSE.md chore: update copyright year to 2023 (#17247) 2023-01-02 21:00:42 +00:00
README.md docs: nitpick README (#19912) 2023-07-25 14:44:50 +09:00
Releases.md 1.36.1 (#20221) 2023-08-21 18:08:38 +05:30
rust-toolchain.toml chore: update to Rust 1.71 (#19822) 2023-07-13 15:16:24 -06:00

Deno

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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

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 setup a simple HTTP server:

Deno.serve((_req) => new Response("Hello, World!"));

More Examples

Additional Resources

Contributing

We appreciate your help!

To contribute, please read our contributing instructions.