Deno in 100 Seconds

Deno is a brand new JavaScript runtime, similar to Node.js. Use it to develop secure server-side apps with built-in TypeScript support, ES modules, and promise-based APIs.
Learn more at deno.land
#javascript #nodejs #100SecondsOfCode
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[@Fireship]

Deno just hit v1.0.0-rc1. I have to say it's awesome to write scripts with TS support out-of-the-box. What do you think?

[@sanusihassan7125]

Will node be replaced by deno?

[@Max14211]

Your content has always been good. But it's on another level now, your scripts have 0 fluff and your editing jobs are really incredible and a very entertaining to watch. Mad props on your development as a content creator love your videos. :)

[@Jessyco]

@@sanusihassan7125 Depends on all the developers and support currently in place for Node. Just like any technology stack if it ain't broken don't fix it. Unless someone has some time on their hand to make a Node => Deno I don't see it happening overnight.

[@sanusihassan7125]

@@Jessyco you are right

[@pardal_bs]

The only thing I don't like about Deno is how it uses async iterables for listening to connections instead of events. Here's why: 1. It doesn't make sense to "iterate" over a listener. 2. It can cause bugs, because `await`ing inside a `for await ... of` will block requests from coming in. 3. Want to write something after the `for await ... of` loop? It won't execute. It feels like writing in a systems language, where the whole thread stops, waiting for something to happen. I also don't like the callback hell, but sometimes callbacks make more sense.

[@smccartney09]

Job postings already asking for 3-5 years of Deno experience

[@muhammadfaateh6463]

that is clearly lol

[@carloslfu]

I just got 5 years of experience watching this 100s video.

[@andreiaquino8994]

I agree with this 😂 smh

[@kolonbah6761]

Exactly what I am thinking 😂

[@shardulbirje6379]

@@muhammadfaateh6463 😂

[@yassinahjij4321]

2009: NODE 2018: DENO 2027: NEDO 2099: DONE

[@KingKong-zq4mp]

ENDO

[@gpguru7355]

@@KingKong-zq4mp ODEN

[@abulfazlhaidary4625]

Good one!!

[@daxitpatel]

@@gpguru7355 THOR?

[@KingKong-zq4mp]

@@daxitpatel LOKI

[@Pogibakayo]

Can’t wait to try this out. Fireship is like Santa bearing toys for devs.

[@sinatraforeign]

Christmas in july!!

[@joopie46614]

it's nothing exciting tbh

[@lasindunuwanga5292]

Same here

[@thecashewtrader3328]

Yes

[@t.h.4823]

Definitely agree. I have already 6x more frameworks and languages I want to learn, that the ones I can use. xD

[@911madza]

Letters "D", "E", "N" and "O" can be arranged in 24 different ways. We already got NODE (2009) and DENO (2018). Assuming new JS runtime comes out every 9 years, we should be covered for next 204 years.

[@tasehagi]

Can't wait for ODEN! Hope I'll live long enough!

[@VictorNascimentoo]

DONE

[@911madza]

@@VictorNascimentoo They should symbolically release DONE as v24! Fingers crossed for 2216.

[@CubeAmaterasu]

Definetly DONE will be the last one

[@divingradish]

@@tasehagi Yummy

[@lemek4]

I love JavaScript world! Don't try to fix existing stuff, just create a new one!

[@Fireship]

Haha, according to Ryan Dahl, Node is basically unfix-able because of all the legacy stuff it needs to support.

[@adam-k]

@@Fireship 5 years from now deno will have the same problem. Anyway cannot use it before large cloud service providers adopt it.

[@randomuser66438]

@@adam-k Ain't cloud servers supposed to allow you to install whatever you want?

[@karma_yogi_42]

@@adam-k sure all software needs to be upgraded and maintained, but the point here is node's architecture is bad and upgrading is extremely difficult. That's why you see late adoption of newer es features. eg: you can virtually forget about top level await in node. Impossible for node to start on ts and wasm support

[@kebbotnet4170]

on the contrary, look at software that tries to "fix existing stuff" without breaking BC. PHP is full of baggage from bad decisions in the past that won't be removed because of backwards compatibility. Java also suffers from this.

[@academixit5126]

2022: NODENO - fixing all the problems with DENO.

[@okie9025]

3 weeks later: NONODENO - self explanatory

[@crowlkats]

cant fix something that aint broken :P

[@Microphunktv-jb3kj]

deno = so.. you have to use npm to install deno ... pretty much sums it up... pretty sure everyone keep using npm :D

[@athif23]

@@Microphunktv-jb3kj I don't know what you're talking about, but I'm pretty sure you don't install deno using npm.

[@VictorNascimentoo]

I would call it "DONE"

[@realsong-fake]

As a Rust developer I would be very happy to use Deno if it can import crates directly for server side usage. I mean WASM is good and all but it requires some extract work to bridge between the JS and Rust is something I'm too lazy to do. And branch out from tokio runtime would also be cool.

[@lord12790]

Love this runtime, single executable, import directly from url, they started with golang but they moved to rust which is a great choice, caching of already compiled codes, sandboxing (nothing outside sandbox is allowed by default), and many more. Hope this is adopted fast and we get more libraries for this or port of node libraries here.

[@codecraft27]

Can you plz explain 'sandboxing'

[@liamvandemon1165]

Once you mentioned the Rust bindings I was sold! I'm excited to dig in and try this out. Would love to see more vids on Deno, WASM, and Rust in the future, thanks for the great content as always!

[@benyou1324]

Deno stands for: Destroy node.

[@khotambakhromov]

btw, is it real? or just a joke

[@eoussama]

I Deno about that chief!

[@sadhlife]

@@khotambakhromov absolutely real. and absolutely the future

[@alim.ismail8272]

Deno is node in reverse. no-de => de-no

[@KylerChin]

Yes, also is the name from a Japanese manga about a dino

[@bob_kazamakis]

9/10 video. Very informative, but you didn’t say “syntactic sugar” once, which is what I came for.

[@gustavokuze]

The real question is: When is Ryan Dahl going to be DONE?

[@HomelessFooser]

i was kinda thinking the same thing so this made me laugh

[@VishalPandey-tf3wp]

:D

[@stephen9849]

PWA in 100 seconds

[@Fireship]

That'll happen soon :)

[@goodclover]

@@Fireship Yes!

[@rickvian]

nobody: recruiters: "we need Deno programmer with 3 years of experience"

[@CloudWithUgur]

you are the reason I stopped recording how tos or todos videos, dude, your videos are just great and I thank you !

[@MfundoTenza]

I'm a first year software dev student. I'm nowhere near this level of knowledge but I still like learning about all these advanced technologies. :)

[@elmotareal]

The only true skill you will acquire for real, is choosing what to ignore and what to learn :)

[@gokuafrica]

So jealous of you. Wish I had subscribed to fire ship when I was in my first year

[@maurusaurelius1266]

Try to keep that beginner’s mind. It’s a blessing.

[@lorenzocanavaggio5335]

You will get there ;)

[@SimoneAronica]

I think that once you'll understand how servers (especially http servers) work, it'll be easy to switch between every framework, as the hardest part of entering in a new framework is always learning the new syntaxes and what it can do without you needing to configure anything, but then the request respond architecture is always the same across all languages. Edit: fixed typos

[@rand0mtv660]

It looks cool and the fact that the creator fixed some of the issues that plague Nodejs is great...but I'm not sure if it can gain enough traction since Node as a platform (with NPM) is so popular right now and there has been so much tooling and code created for it. People might be hesitant to migrate.

[@Soremwar]

The thing is Node is not especial, what gives Node value is the fact that it can run JavaScript, meaning that most of the code already written in Node can be ported to Deno, so it's not like Deno begins at 0% percent, it can inherit everything Node already has For example, I can use React directly on my Deno app without having to rewrite a single line of it

[@kademmohammed6836]

I'm an early adapter of this video xD

[@davidsaracini7300]

Node was released in 2009... over 10 years ago. Now a decade later, the same guy that created Node and has probably 20K hours of working with it, has decided to create Deno to address areas where he feels like HIS CREATION has fallen short, and people want to dismiss it? Ryan Dahl has forgotten more about Node than most people will ever know. So, maybe it might be smart to pay attention. Everything I'm seeing from the initial release looks very promising.

[@Kevin192291]

Already using it and already loving it!

[@jayanths1221]

Kind of unrelated but is it worth learning Typescript for a NodeJs developer at all?

[@Fireship]

I find it very valuable for node dev kzbin.info/www/bejne/l5mmqKSojtV8q68

[@TimeoutMegagameplays]

If you have some framework to work with that supports TypeScript (such as NestJS) it's good to know, having a type safe server-side API is great.

[@alexcubed4270]

Typescript is awesome! I saw a comment I posted on that video a year ago where I said "Now I'll probably start using it more than JavaScript.", and I can confirm that I solely use typescript now :D

[@nadakidd]

It's worth knowing and can be really useful for things like APIs, but the closer you get to the front end, less the trade-off is worth it IME considering that there is a tax to having ts in your stack. Everyone talks about the alleged benefits. No one talks about the trade-offs. medium.com/javascript-scene/the-typescript-tax-132ff4cb175b "Programmers know the benefits of everything and the tradeoffs of nothing" (Rich Hickey) www.reddit.com/r/programming/comments/3va6x0/programmers_know_the_benefits_of_everything_and/

[@exactzero]

It's the future! Once you start using it, there's no going back.

[@AlecArmbruster]

Can’t wait to learn Deno and let it be one of my primary sources of pain/suffering in the future!

[@osbornghampson995]

Even though it is awesome, it can't beat node js because of the community support and maturity, plus companies will not migrate when existing tools already do the work without too much issues

[@maxwellsmartarse2916]

But what about for new coders and new ventures? That's probably where the market is. It's where I'm starting.

[@Guergeiro]

If anyone wants a rest micro framework for Deno, checkout Drash! Disclaimer: I'm one of the mantainers.

[@natew4724]

I'm sorry but that server with for await is the most satisfying thing I've ever seen in my life

[@Geomaverick124]

I think the way that these new languages will become popular is for Senior devs looking to use something new at their companies start using a combination of Svelte and Deno. When they leave the company you will have a void and a need of someone who knows Svelte and Deno to take his place...if those new frameworks are adopted company wide then when people leave the company they take that knowledge and implant it into another company causing the need to spike

[@ichiidev]

The only things that are keeping me on Node are NPM and the popularity of Node. I'm still a beginner developer and I rely a lot on modules, and even if Deno has a lot of good things, because the use of external package seems like a lot of complications for me, and because there are less people using it, I won't be able to find much help in case I struggle. And because of that, I'll be staying on Node for some more time.

[@redeemergadol]

Great vid. Seems too niche right now. So many haven't even picked up TS for Node. Let's get there first. Personally, I use Go :)

[@lionel16]

Deno is honestly super interesting and I'd encourage the use of it over node for beginners.

[@fedes9626]

One guy will make a small web framework for deno inspired by ruby and will be praised like a god yet again.

[@EllyOguttu]

I am fireship and i am the fastest explainer of frameworks in the world

[@Geomaverick124]

I think that it will become one of the big programming frameworks / languages but wont overtake Node...Similar to how typescript wont overtake javascript or Svelte over the other frameworks... at least for a few years. On the front we will have React, Angular, Vue, Svelte...and on the backend will have Node/Express, Deno, Python,Php/Laravel, and C# as choices for the most popular

[@isfland]

10 years later, new product from Ryan Dahl: DONE, which solves the Deno and Node weaknesses.

[@0x6e95]

YES! Finally! Deno will be huge in the future. Mark my words.

[@TheEnde124]

Please do more videos about Deno! It looks really good

[@NFSHeld]

Deno: it's safe by default. Next up: how to import modules from a foreign URL that you don't control without a hash-sum that guarantees that what you imported a second ago is still what you thought it was a month ago.

[@RustIsWinning]

The hash is in your lock file youDummi3 😂😂

[@AlexEscalante]

I would try it! Certainly makes things easier and straightforward

[@Oswee]

Considering all the clutter in frontend world... i think this will be the game changer. Highly optimistic even if i do not use JS for the back-end.

[@od_avenon]

Went back in time after the Bun video, and it's weird how much slower your speech was

[@zoecarlibur]

The line between front-end and back-end will become even more blurred. Once the code bases start to look the same. Which is a good thing IMO. But how does this affect existing frameworks like NestJS or Angular?

[@logandemir1635]

Bro, you are the man! More awesome techniques please!

[@LongTailWoodcraft]

Statically typed, not strongly typed

[@kerimtim]

0:38 Closing the laptop and going to gym!

[@gregfletcher2360]

Deno is chance to right the wrongs of Node. And Node is pretty awesome

[@TheHermitHacker]

If node.js was such a big deal, Demo certainly will be. Looking forward to it.

[@AllVid]

Django is best...... . . . . . . . . . . . . . . . lol i use express, dont even know python ha ha

[@Arciiix]

Your videos are amazing dude, keep it up :D

[@yogeshdeveloper5346]

Yes! In my opinion, Deno is the future of js runtime!

[@Wereld03]

If it supported NPM modules, those are what make node great

[@crowlkats]

@@Wereld03 those are what make node hell. Too many people rely on dependencies for stupid reasons... left-pad is the best example. People should stop blindly using packages

[@exactzero]

@@Wereld03 No.

[@Mauryarohit1]

liked the intro already.

[@supindersingh8882]

Got introduced first time with Deno. Looks little bit cooler than Node

[@jacquesduplessis6175]

Starting to look more and more like a real back-end language

[@kenmurray4005]

Deno is fundamentally flawed like NodeJS. Client side JS rendered DOM's is not SEO. Google can scan some website framework markup like React and others, but for proper visibility you really need client-side HTML for search engines. I could be wrong, but that was the contention I had with NodeJS when it first came out.

[@pick-upartist8268]

ohyeah. next year time for tyrex.js, terminator.js, zombie.js, marvel.js, chrocodile.js

[@eagle_elyas]

Me: still struggling to learn NodeJs basics Dahl: Oops! I released Deno Fireship after visiting Deno's homepage: Deno is the future!

[@slapmyfunkybass]

You’ll spend time learning this only for something to replace it two years down the line.

[@lone.wo1f]

Now, I think it is better to be a software developer than a web developer, every now and then new runtime, frameworks come, and little time you get to learn, let alone master them...

[@lykeuhfox4597]

Thank you, thank you, thank you for this video format. With so many web technologies, these 100 seconds videos save me so much time with basic explanations for what they are and what they're used for.

[@Skia_]

your video editing and those memes you throw around are fire XD

[@FahadAyaz]

So is your body

[@MrAwesomeTony]

I learned about Deno when I was searching electron alternative and felt it has the potential to replace node in some ways. It also ditched a lot of nodejs stuff like NPM(package.json), API methods, etc. The point is that while it is still young, but it shows the ambition to correct a lot of things node is doing wrong (according to my "research"). Have fun learning new stuff.

[@softwarelivre2389]

Can't wait for an deno based electron/nwjs version [Deno Webkit maybe 🤔🤔🤔].

[@Yassir.A.P.]

So, what Electron alternatives have you found and now recommend?

[@xeliani.7809]

@@Yassir.A.P. tauri

[@codecraft27]

Can you Explian what things nodejs does wrong?

[@vcokltfre]

Never used Node, TS, JS or wasm before, or done any web programming pretty much, maybe Deno's the place to start...

[@peybro]

start with TS before ;)

[@Soremwar]

Start with the latest JS release ES2020(Deno supports if by default), nowadays the only features that TypeScript provides is the type system, so you would want to check on JS first then peek on Typescript

[@TheBadFred]

The Future of server side JS? Who knows? Probably not, maybe a future branch or a step towards it. It definitely looks interesting. Wold be also interesting to know what the downsides are.

[@sidneymonteiro3670]

I claim the name DONE.js as the ultimate framework. No more frameworks after that. Stop the madness!

[@AreyHawUstad]

This is one of the best channels I have subscribed to in a very long time. Thanks for these 100-second videos, they are simply amazing!

[@Realswagoverlord]

JavaScript is a nightmare 😆 Always new libraries and frameworks.

[@yuudaemones2624]

Holy cow, _shivers_ that top level await though. And server side TS just makes sense. This looks so rad.

[@mindasb]

2009: Node 2019: "node".split("").sort().join(""); Next version: "node".split("").sort().reverse().join("");

[@gamerdude736]

Could you make 100 sec Golang?

[@Fireship]

Someday...

[@randomuser66438]

I was looking forward for 1.0. I'll give it a try.

[@binitrupakheti4246]

Deno feels like a failed project. It's got zero adoption rate.

[@NICK....]

If you haven't already I'd like a video explaining what stuff like "Strongly typed" or "Top level await" mean thanks

[@frontendtony]

Do you write JavaScript?

[@TimeoutMegagameplays]

See his video about TypeScript to understand strong typing. Top level await is just a new feature for the JavaScript language Promises, he also has a video about them.

[@crowlkats]

@@TimeoutMegagameplays top level await isnt a TS feature, but JS

[@TimeoutMegagameplays]

@@crowlkats Oh that's correct you're right

[@pravishal5102]

No callback hell! No NPM ! Am Adopting this!

[@davidnagy1046]

i like the idea of Deno, but i also like bringing up my terminal to use npm or yarn

[@Microphunktv-jb3kj]

deno is so good that you have to use NPM to install it... what a joke rofl. Since github acquired npm, this deno gonna be extinct in no time, just like dinosaurs... the logo is fitting :)

[@typicalcube487]

@@Microphunktv-jb3kj you don't have to use npm to install it...

[@Soremwar]

@@Microphunktv-jb3kj Some guy posted a version of Deno to npm(only to showcase, it doesn't actually work), but Deno has nothing to do with Node. Don't know where you heard that BTW. Is Microsoft who owns NPM, and TypeScript is also from Microsoft. Deno is light years ahead of Node with TypeScript support, so I have a pretty clear image on who has the advantage here

[@softwarelivre2389]

Deno can be installed from de command line from shell, powershell, bash, and all on a one-line command. So if you wanna nitpick, do it right. Stop with lies.

[@DarshitHedpara]

You are awesome dude 🔥🔥🔥🔥🔥🔥

[@michaelweaver4439]

have been playing with deno a bit - very nice, but I question the point of heading for server side typescript, when I could also head for WASM this seems more the way forward into the future and when we start to loose the restrictions on the anguages we choose then it starts to open a can of worms around what languages we actually want to use in what situation? is deno really the right language for the server or browser? maybe Rust? Go? C#, Java, heck C++ anyone?

[@Fireship]

It depends on what you're building. TS is the best language for scripting (imo) and way faster to learn/write than most compiled languages.

[@LarsRyeJeppesen]

Using same language front and backend is the trick

[@Smrtnyk]

Deno is not a language

[@Soremwar]

GO is great, in fact any language should do the job for what you are looking Find a language you like, check if it offers what you need and then start learning from there. I find myself to be way more productive with JavaScript so that's what I stick with

[@dirty-kebab]

Coming back to this - my guy said D'NO 🤣🤣

[@ragnarlothbrook8117]

Your videos are so well made that I would watch them even if they would be about crocheting.

[@Ken-jp7eu]

How we gonna do package version control then? By copying URLs from every website?

[@spongechameleon6940]

I guess the providers will have to include the version in the URL e.g. "...?=latest" or "...?=v3.2", maybe ??

[@softwarelivre2389]

While it is possible to import from URLs, the best practice is to download the script (or copy the source code and save locally) to your machine/server and do only local imports, so that you will not run out on any problems.

[@first-thoughtgiver-of-will2456]

I think Rust is the future of server side javascript (or a scripting language built on Rust)

[@nahiyanalamgir7614]

Interesting fact: "Deno" is deliberately named from switching characters of "Node".

[@MadManUSMC]

Dahl gave a ted talk years ago about the flaws in node. He said at that time he was working on deno and it would be made correcting the things he did wrong in node. Her's hoping it is as great as he expects it to be.

[@3mro_coding]

I can't ignore any video you post even if am not interested. For sure I will learn something new. You have unique conents.

[@lucianotomasvilla7274]

Will it replace Node?

[@icemaqe99]

Sounds a lot like Dart.

[@TracerBH]

Wait. All languages have Access to all properties of an object. Lmao

[@augustberchelmann4946]

Deno will be very hindered without npm module support.

[@emanuelfarauanu1760]

I tried it but honestly it just gave me headaches due to lack of packages. Maybe in like 4-5 years the situation will be better, but I'm going to stick to node until then.

[@parker3295]

Whats up Fireship

[@MaxPicAxe]

I think URL module referencing is nonsensical... there are 3 ways to resolve modules, a) location-based like Deno and Go, b) implementation-based like NPM and most package managers, c) interface-based like C and C++. I much prefer interface-based but sadly I don't have choice for most package managers - I must use implementation-based. But location based is like saying I want to watch netflix.com/lord-of-the-rings. P.S I love the other features of Deno. And lol I didn't realize node can be rearranged to say deno.

[@Delsto5]

Who else is here for Deno 2.0 in 2024?

[@squidward7091]

I like 100 second video 🔥🔥🔥

[@chairlovawitabat]

Must a Deno project be written in typescript ?

[@crowlkats]

no, js works as well

[@MrEW1985]

2 years later it is never heard from again. Shame

[@Metruzanca]

I have been waiting for Deno to hit a useable release. HELL yes. Thanks my man for bringing this to my attention.

[@knowscountchen7305]

deno is great and charming tech! love it. but I'd say it cannot currently replace Node.js. Deno made a lot of really good fixes, but as a developer I would not give NPM up... It's like creating a more secure and faster instagram - most people won't use it. to wit, deno lacks game-changing features that Node.js currently provides us with whilst it lacks non-replicatable features.

[@DannyZolp]

You see, the only time Deno will be prevalent is when I am trying to write something in node and the package I need is ONLY supported in Deno...

[@techtechtuts]

just like in your animation from NODE to DENO so indeed it will be the future and, end of the NODE as well, because it's from same author just like angular 1.x to angular 9,x from google :)

[@Zyets]

i dont think using urls in imports is a good idea. It will end up in a separate file with all external packages, so it wil be easy to maintain correct versions of dependecies. Otherwise it will be complete mess, with multiple versions of the same package in one project (if there is no man in the team responsible to look after such situations). Also, how you manage autoimport feature in IDE?

[@randomuser66438]

2025: Done

[@ThorstenStaerk]

I am missing the "hello world" part: where do I download deno, how do I start it, or is it running on a browser, called from a javascript, ... just make us able to write the first script, and we'll take it from there.

[@theblacktechexperience]

Demo 1.0.0 release is May 13