A modern runtime for JavaScript and TypeScript.

1. Deno
Fundamentals

2. Christoforus Surjoputro
Senior Tech Lead at Xendit
https://www.linkedin.com/in/christoforus-surjoputro/

3. Deno Introduction

4. Deno A modern runtime for JavaScript and
TypeScript.
Deno is a simple, modern and secure
runtime for JavaScript, TypeScript, and
WebAssembly that uses V8 and is built in
Rust.
https://deno.land/

5. Runtime is a sub-system that exists both in the computer
where a program is created, as well as in the
computers where the program is intended to be run.
Most programming languages have some form of
runtime system that provides an environment in
which programs run. This environment may address a
number of issues including the management of
application memory, how the program accesses
variables, mechanisms for passing parameters
between procedures, interfacing with the operating
system, and otherwise.
https://en.wikipedia.org/wiki/Runtime_system

6. Features in Deno

7. Web Platform Functionality

8. Secure by default

9. Supports TypeScript out of
the box

10. Built-in development tooling

11. Some standards module

12. Deno vs Node.js
Deno Node.js
Runtime Engine v8 + custom rust v8 + custom C++
Event Loop Tokio (Rust) libuv (C)
Development tooling Built-in 3rd party
Import module URLs (ES Modules) Magic (node_modules)
Module specification ES Modules (browser
standard)
ES Modules & CommonJS
Security Non Permissive Permissive

13. Deno Deploy

14. Deno
Deploy
is a distributed system that runs
JavaScript, TypeScript, and WebAssembly
at the edge, worldwide.
https://deno.com/deploy

15. Success is neither magical nor
mysterious. Success is the natural
consequence of consistently
applying the basic fundamentals
~ Jim Rohn