coding-to-music commented 3 years ago

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 like a dependency inspector (deno info) and a code formatter (deno fmt).
Set of reviewed standard modules that are guaranteed to work with Deno.

Install

Shell (Mac, Linux):

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

PowerShell (Windows):

iwr https://deno.land/x/install/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:

import { serve } from "https://deno.land/std/http/server.ts";
const s = serve({ port: 8000 });
console.log("http://localhost:8000/");
for await (const req of s) {
  req.respond({ body: "Hello World\n" });
}

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 guidelines.

coding-to-music commented 3 years ago

https://deno.land/manual@v1.11.2/introduction

Introduction

Deno is a JavaScript/TypeScript runtime with secure defaults and a great developer experience.

It's built on V8, Rust, and Tokio.

Feature highlights

Secure by default. No file, network, or environment access (unless explicitly enabled).
Supports TypeScript out of the box.
Ships a single executable (deno).
Has built-in utilities like a dependency inspector (deno info) and a code formatter (deno fmt).
Has a set of reviewed (audited) standard modules that are guaranteed to work with Deno.
Can bundle scripts into a single JavaScript file.

Philosophy

Deno aims to be a productive and secure scripting environment for the modern programmer.

Deno will always be distributed as a single executable. Given a URL to a Deno program, it is runnable with nothing more than the ~25 megabyte zipped executable. Deno explicitly takes on the role of both runtime and package manager. It uses a standard browser-compatible protocol for loading modules: URLs.

Among other things, Deno is a great replacement for utility scripts that may have been historically written with Bash or Python.

Goals

Ship as just a single executable (deno).
Provide secure defaults.
- Unless specifically allowed, scripts can't access files, the environment, or the network.
Be browser-compatible.
- The subset of Deno programs which are written completely in JavaScript and do not use the global Deno namespace (or feature test for it), ought to also be able to be run in a modern web browser without change.
Provide built-in tooling to improve developer experience.
- E.g. unit testing, code formatting, and linting.
Keep V8 concepts out of user land.
Serve HTTP efficiently.

Comparison to Node.js

Deno does not use npm.
- It uses modules referenced as URLs or file paths.
Deno does not use package.json in its module resolution algorithm.
All async actions in Deno return a promise. Thus Deno provides different APIs than Node.
Deno requires explicit permissions for file, network, and environment access.
Deno always dies on uncaught errors.
Deno uses "ES Modules" and does not support require(). Third party modules are imported via URLs:
```
import * as log from "https://deno.land/std@$STD_VERSION/log/mod.ts";
```

Other key behaviors

Fetch and cache remote code upon first execution, and never update it until the code is run with the --reload flag. (So, this will still work on an airplane.)
Modules/files loaded from remote URLs are intended to be immutable and cacheable.

coding-to-music commented 3 years ago

https://github.com/denoland

https://github.com/denoland/doc_website/blob/main/pages/about.tsx

https://doc.deno.land/

https://doc.deno.land/about

coding-to-music commented 3 years ago

https://deno.land/manual@v1.11.3/examples