- - -

Deno

- -

- A new way to JavaScript - - -

+ +

Deno

+ A new way to JavaScript +

@@ -31,30 +26,32 @@ - + - + @@ -64,7 +61,9 @@ - +

Windows
- deno -	deno	- +	- +
- deno_std -	deno_std	- +
- +	@@ -72,166 +71,73 @@ class="badge" href="https://ci.appveyor.com/project/deno/deno-install" > - +
- registry -	registry

#Install

Install #

With Shell

curl -fL https://deno.land/x/install/install.sh | sh

With PowerShell

iex (iwr https://deno.land/x/install/install.ps1)

Mac or Linux

curl -fL https://deno.land/x/install/install.sh | sh

Windows (PowerShell)

iex (iwr https://deno.land/x/install/install.ps1)

#Mini-tutorial

Example #

Try a Deno program. This one serves a local directory in HTTP.

-alias file_server="deno \
-  https://deno.land/x/http/file_server.ts --allow-net"
-

Try running a simple program:

deno https://deno.land/welcome.js

+ +

Or a more complex one:

Run it:

-% file_server .
-Downloading https://deno.land/x/http/file_server.ts...
-[...]
-HTTP server listening on http://0.0.0.0:4500/
-

And if you ever want to upgrade to the latest published version:

file_server --reload

+import { serve } from "https://deno.land/x/http/server.ts"; +const s = serve("0.0.0.0:8000"); -

#Dig in...

+async function main() { + for await (const req of s) { + req.respond({ body: new TextEncoder().encode("Hello World\n") }); + } +} - - Documentation - +main(); -

- API Reference -

Dig in... #

- - Links to other Deno resources. - + Manual

#Continuous Benchmarks

API Reference

These plots are updated on every commit to

- master branch -

Style Guide

+ +

Module repository

#Execution time

This shows how much time total it takes to run a few simple deno programs:

- - tests/002_hello.ts - -

and

- Release notes - tests/003_relative_import.ts - -

- For deno to execute typescript, it must first compile it to JS. A warm - startup is when deno has a cached JS output already, so it should be fast - because it bypasses the TS compiler. A cold startup is when deno must - compile from scratch.

#Throughput

Community chat room

Time it takes to pipe a certain amount of data through Deno.

- - - echo_server.ts - -

and

- - cat.ts - -

Smaller is better.

- -

#Req/Sec

Benchmarks

- Tests HTTP server performance. 10 keep-alive connections do as many - hello-world requests as possible. Bigger is better. -

- -

- - deno - - is a fake http server that doesn't parse HTTP. It is comparable to - - node_tcp - - . -
- - deno_net_http - - is a web server written in TypeScript. It is comparable to - - node_http - - . -
- - hyper - - is a Rust HTTP server and represents an upper bound. -

- -

#Executable size

deno ships only a single binary. We track its size here.

- -

#Thread count

How many threads various programs use.

- -

#Syscall count

How many total syscalls are performed when executing a given script.

- -

- Historical benchmark data + A curated list of awesome Deno things