JSJ 267 Node 8 with Mikeal Rogers, Arunesh Chandra, and Anna Henningsen
JavaScript Jabber27 Kesä 2017

JSJ 267 Node 8 with Mikeal Rogers, Arunesh Chandra, and Anna Henningsen

JSJ 267 Node 8 with Mikeal Rogers, Arunesh Chandra, and Anna HenningsenOn today’s episode of JavaScript Jabber we have panelists Joe Eames, AJ O’Neil, Amiee Knight and Charles Max Wood and we are talking about Node 8. To help us we have special guests Mikeal Rodgers, Arunesh Chandra, and Anna Henningsen. It’s going to be a great show. Tune in.[1:56] Is Node 8 just an update or is there more?
- More than just an update
- Two main points:
- Improved https://www.npmjs.com/package/prana support
- Native API
- Native APIs are helpful for Native Add-ons. For both the consumer and the developer side.
- Prior to update these Node Native modules ran in C++ and bound to specific to Node 8 APIs.
- Causes these modules to be updated or reconciled every time these modules are rereleased.
- Creates burden for module maintainers.
- Creates friction in upgrading Node versions in production departments.
- If you have a deployment depending on a certain Native module, some of the modules may not get updated in time when updating your Node versions. Keeping people from updating Node.
- Creates compatibility issues with Node users not using Node 8
- Experimental support for a Native layer in Node 8 to eliminate these issues as much as possible.
- Important milestone for the module ecosystem.
- You can write extensions for Node in C++ and it decouples V8 so you can use something else on the front.
- Modules takes dependency on V8 API specific to a particular version. So if V8 changes your module will be extracted from that.
- As a side benefit, you can have another VM to take advantage of that.
- Major version upgrades mean updating Native modules and usually some of those modules haven’t updated to the newest version of Node and be complicated.
- Deep dependency wise, about 30% depends on a Native module somewhere
- In the future, with the Native API, you’ll be able to update Node without breaking modules.
[5:51] What kind of work went into this?
- Most of the work was in C++
- First thing that was done was, they looked at the top dependent Native modules in the ecosystem.
- Looked for what kind of V8 exposure they had and cataloged it
- Looked at how these APIs and what their purposes were
- Looked for a way to extract them so that they are part of Node Core
- Created neutral APIs, now part of the Node core.
- All C APIs
- Also has a C++ wrapper to improves usability of the API.
[7:17] What’s an example of what you can do with these APIs?
- Native modules allows for tighter integration and better module performance
- Specific APIs that you can use in V8 that isn’t available through JavaScript
- If you have a C++ variable code and you want to expose a variable into JavaScript, that is V8 API note a Node 8 API
- Having it bound directly to the VM was something they wanted for a long time
- Google controls V8 and they bind to V8
- Created a better relationship with Google starting in IOJS
- Also worked with Microsoft with their Node Shocker work.
- Same with https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey
- https://github.com/mozilla/spidernode is in the works
[9:23] Have you guys done any testing for performance?
- Some. There is a performance working group.
- There is a need to stay on top of V8
- V8 team has focused on new language features
- Many features have been added over the years
- Many didn’t come in optimized
- The performance profile has changed with these features
- If you’re using new language features, you will see a performance boost
- In core, still tracking down code that was specific to the old optimizer and rewriting i to work the new optimizer
- https://turboc.codeplex.com/ compiler hasn’t landed yet, but is to come.
- Will have a completely different performance profile
- In most real world applications it will be faster
- Waiting on the release to take a version of V8 to make it easier to upgrade features in the future
[11:28] Are the new features picked up from V8 or implemented in Node?
- It’s all in V8
- Better longterm support
- Promises are made better in Node as a platform
- Added new method called util.promisify()
- Implementation comes from V8
- Allows for more optimization for promises in Node core
- Promise support for the one-deprecated domains module.
[13:02] Is there anything more than NMP 5?
- First off, delete your NMP cache.
- It’s in your home directory usually with a .npm extension
[14:09] What are the new features in V8?
- Unlimited heap sizes, previously had a 4gb limit. No fixed limit.
[14:09] Will you see things like chakra come out tuned for servers?
- Profiles of a server for application process are getting smaller
- Getting cut into containers and VMs and micro services
- Vms that have cold boot time and run quickly in a strained environment is looking more like what we will see in the future
- Yes, especially if you’re using cloud functions
- V8 is optimized for phones, but Chakra is even more so
- Looking for opportunities for VMs can be solely optimized for a device target
- Node take advantage of that VM
- VM neutrality is an interesting concept
- VM Vendors trying to optimize it based on workloads of a server
- Opens opportunities for Node
- Node Chakra has been proved to iOS. You can cut off jitting off which was a requirement to be able to be in the Apple App Store
- Node is not just for servers anymore
- Node doesn’t take a long time configuring it
- When a developer runs code on an IoT or a mobile app they don’t control the VM that is bundled, they run it on top of Node and it just works.
- VM neutrality gives a new vector, so you can swam a whole different VM
[18:44] When running different engines like iOS vs Android, does the profile change?
- What it comes down to is if it’s eventive programming
- The browser is an eventive environment, is very efficient waiting for things to happen before it does something
- The way that we program servers and nodes are the same as well
- the basics are the same generally
- environmental differences exist but the programming model is usually the same
- What does impact it is memory and processor and hardware and things like that
- That is where tuning the VM comes into play
[20:29] What is the new Async Hooks API used for?
- Node has been lacking for automated inspection of Async Hook
- No way for Node to tell you when scheduling and beginning of an Async operation. Hook helps with that
- it’s a way for developers to write debugging features
- Node tells the application that it’s working with Asynchronous way.
- The embedded inspector has been embedded since Node 6
- Now has a JavaScript API to use it
- You can use things like Chrome debugger inside the running node process
- Old debugging protocol has been removed
- VM.run is still there but in the process of being deprecated
[22:34] How like is the experimental Node API will change?
- Marked as experimental because it’s the first time in the open
- Hopefully out of experimental soon
- Soon can port API to the existing LTS
- Looking for more people to participate with the new API and give feedback
- Fix any concerns before it goes to LTS
- Some other experimental things are in the works like ASync Hooks and how it interacts with promises
- Renaming some features
- Another new feature - serializer and deserializer that comes with V8
- experimental but will most likely stay
[25:31] what is your standard for going to LTS?
- Major releases every 6 months
- Next Oct Node 9 will come out and then Node 8 will be LTS
- Documentation, updates, additions etc will be ready then
- Plan to do it for 2.5 years
- Every even releases come out to LTS as the odd release comes out
- Helps keeps a current line while having something new in the release line
- Node 6 is the current LTS version
[27:26] What are you taking out or deprecating in Node 8?
- Use the word deprecate sparingly
- If many people use features, it’s hard to get rid of
- Security issue with Buffer, constructor argument was ambiguous
- Had added APIs that were more explicit over time and pushed those
- Now it will be deprecated
[28:43] 21% - 33% Performance increase with some Node updates
- Someone online updated their React app to Node 8 and found an 21% - 33% increase
- Benchmarking group tests to make sure things are getting faster
- V8 is always getting faster as well
- Code changes fast and so there is a chance performance slows down so they have people to check
- Benchmark test are all automated by a team
[30:47] Is it safe to just switch to Node 8?
- For front-end, yes
- clear your NPM cache
- Back use cases will usually wait until LTS
[31:28] Where any of the features hard to implement?
- The API work took about a year
- It was a collaboration which made it interesting
- IBM, Intel, Google were involved
- The collaboration took a while
- Also Async hooks took at least a year.
- Async hooks used to be call

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030 JSJ Learning & Teaching JavaScript with Noel Rappin

030 JSJ Learning & Teaching JavaScript with Noel Rappin

PanelNoel Rappin (twitter github blog) Jamison Dance (twitter github blog) Charles Max Wood (twitter github Teach Me To Code Intro to CoffeeScript) AJ O’Neal (twitter github blog) Discussion 00:52 - Works in training and talent development for Groupon00:56 - Author of Rails Test Prescriptions and upcoming Master Space and Time with JavaScript01:21 - Writing a book about JavaScript02:33 - Focus of the bookPart 1: Jasmine and jQuery and the JavaScript Object Model Part 2: Extended examples of jQuery Part 3: Backbone Part 4: Ember 03:46 - Self-published authors05:15 - Approaches and mindsets to learning JavaScript06:04 - “Gotchas!” and bad features in Javascript09:17 - Modeling JavaScript for beginners11:23 - (AJ joins the podcast)11:42 - Resources/Classes for learning JavaScriptGood Parts Book: Douglas Crockford JavaScript Patterns: Stoyan Stefanov Eloquent JavaScript: A Modern Introduction to Programming: Marijn Haverbeke Maintainable JavaScript: Nicholas C. Zakas 13:54 - Hiring people with JavaScript experience at Groupon15:12 - Training workshops17:00 - Getting new hires up to speed quicklyPairing Mentoring Lectures Workshops 21:38 - Book LearningYou can learn at your own pace But it’s hard to ask questions to a book 22:51 - How Noel gained expertise in JavaScript24:38 - Code reading and learning to program a language26:18 - Teaching people JavaScript as their very first language31:55 - Classroom layout33:42 - Online trainingKahn Academy Computer ScienceCode AcademyStarter League40:00 - Finding a mentorStack Overflow PicksShrines by Purity Ring (Jamison) Learnable Programming: Bret Victor (Jamison) Mob Software: Richard P. Gabriel & Ron Goldman (Jamison) Monoprice.com (AJ) ZREO: Zelda Reorchestrated (AJ) The Official Twitter App (Chuck) Fluid App (Chuck) Try Jasmine! (Noel) Justin Searls (Noel) The Atrocity Archives: Charles Stross (Noel) Futurity: A Musical by The Lisps (Noel) Transcript NOEL: I’m trying to figure out where the chat is in this stupid Skype interface.JAMISON: Just imagine the worst place it could possibly be and that’s where it is.[This episode is sponsored by ComponentOne, makers of Wijmo. If you need stunning UI elements or awesome graphs and charts, then go to wijmo.com and check them out.][Hosting and bandwidth provided by The Blue Box Group. Check them out at bluebox.net]CHUCK: Hey everybody and welcome to Episode 30 of the JavaScript Jabber show! This week on our panel we have, Jamison Dance.JAMISON: Hey guys!CHUCK: I’m Charles Max Wood from devchat.tv and this week, we have a special guest and that’s Noel Rappin!NOEL: Hey everybody!CHUCK: For the people who don’t know who you are, you want to introduce yourself, Noel?NOEL:  Sure. I currently work in training and talent development for Groupon. And I am the author of previously “Rails Test Prescriptions” and currently a self-published book called “Master Time and Space with JavaScript”, which you can get at noelrappin.com. I need to spell that out, right? N-o-e-l-r-a-p-p-i-n.comCHUCK: So I’m little curious, before we get into the topic which is learning and teaching JavaScript, how did you get into writing a book about JavaScript? What’s your background there?NOEL: You know, it actually relates to teaching and learning JavaScript. I think, I was like… a lot of long time web devs. I spent my first round as a web consultant in around, turn of the century 2000’s. I spent time trying to talk clients out of JavaScript stuff because it was such a pain in the neck. And I kind of got away from it for awhile and came back a couple of years ago to realize that basically, everything had changed and they were actually usable tools now.And last summer, I was working with a… at that time,Special Guest: Noel Rappin. Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

4 Loka 201251min

029 JSJ Bower.js with Alex MacCaw and Jacob Thornton

029 JSJ Bower.js with Alex MacCaw and Jacob Thornton

PanelAlex MacCaw (twitter github blog) Jacob Thornton (Fat) (twitter github blog) AJ O’Neal (twitter github blog) Jamison Dance (twitter github blog) Joe Eames (twitter github blog) Charles Max Wood (twitter github Teach Me To Code Intro to CoffeeScript) DiscussionBower.js (web) Bower.js (twitter) Bower.js (github) SXSW Package managers ender-js BPM hem Benefits Small components Yeoman.io Browserify Dependencies Segmenting the community Transports Mozilla (github) Commands Building an actual package manager node.js Moving parts of a package manager Events Challenges Ember.js Mobile web application development Google Chrome apps Desktop apps in JavaScript PicksKershaw Ken Onion Tactical Blur Folding Knife (AJ) The xx: Coexist (Jamison) Neil Armstrong’s Solemn but Not Sad Memorial Cathedral (Jamison) Collective Soul Cat (Jamison) Amazon Prime (Joe) Star Trek Original Series on Amazon Prime (Joe) Functional Programming Principles in Scala: Martin Odersky (Joe) Domo (hiring!) (Joe) Delegation in Google (Chuck) Civilization IV (Chuck) Fujitsu ScanSnap (Chuck) Bill Nye’s Twitter Account getting suspended was not cool (Jacob) Github + Twitter profile redesign (Jacob) Avoid 7/11 Hot Dog Flavored Chips (Jacob) The Big Picture (Alex) CoffeeScriptRedux (Alex) Stripe (Alex) Special Guests: Alex MacCaw and Jacob Thornton. Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

2 Loka 201247min

028 JSJ Greenfield vs Brownfield Projects

028 JSJ Greenfield vs Brownfield Projects

PanelJoe Eames (twitter github blog) AJ O'Neal (twitter github blog) Jamison Dance (twitter github blog) Charles Max Wood (twitter github Teach Me To Code Rails Summer Camp) DiscussionGreenfield - Brand New Project Brownfield - Older Applications, Legacy Code Poopfield - PHP Development Dealing With Legacy Code Use Tests Working Effectively with Legacy Code - Michael Feathers Risk When is the big rewrite the correct answer? PicksJoseph Smith: Rough Stone Rolling (AJ) Roll Up Crepes (AJ) Calepin (AJ) Bernie (Jamison) Dota 2 (Jamison) Derrick Storm Novels - A Brewing Storm, A Bloody Storm, A Raging Storm (Joe) Castle (Joe) X-Wing Mineatures (Joe) PEX For Fun (Joe) MLG Championship - Starcraft Duel (Joe) VESA 75 to 100 Adapter (Chuck) LG Tone Bluetooth Headphones (Chuck) Transcript JOE: Listen baby, it won’t get weird.JAMISON: [Chuckles]AJ: That sounds... weird.JAMISON: [Chuckles] Too Late.[Hosting and bandwidth provided by the Blue Box Group. Check them out at bluebox.net.][This episode is sponsored by Harvest. I use Harvest to track time, track subcontractor’s time and invoice clients. Their time tracking is really simple and easy to use. Invoicing includes a ‘pay now’ function by credit card and PayPal. And you can sign up at getharvest.com. Use the code RF to get 50% off your first month.]CHUCK: Hey everybody and welcome to episode 28 of the JavaScript Jabber show. This week on our panel, we have AJ O’Neil.AJ: Yo, yo, yo comin’ at you live from the second story of an office base in Orem, Utah.CHUCK:  We also have Jamison Dance.JAMISON: Hi, I’m Jamison Dance and I am super excited, because today iTV just announced that we are doing the Nintendo TV thing; and I haven’t been able to talk about it for, like, six months, so it’s a good day.CHUCK: Cool. We also have Joe Eames.JOE: Comin at you semi live from American Fork, Utah.CHUCK: And I am Charles Max Wood from devchat.tv. Tim is not with us this week because he is in China. I thought I’d point that out, because I think it’s cool. Anyway, this week we are going to be talking about Greenfield versus Brownfield projects. It was kind of funny when we were getting ready to do this, some of the panels were like, Green/Brown?JAMISON: Yeah, I have to pull Josh Susser and ask for a definition.CHUCK: So, as far as I understand it, there are some new --- to this, depending to who you talk to, but mostly, Greenfield is a brand new project with few or no decisions made and no code written for it yet. And Brownfield projects are effectively older applications usually associated with legacy code. You know, so it’s an application that already has code written toward it. Typically, it is out there in the world doing whatever it is supposed to do.JAMISON: Now, I want to put this question delicately. Are there any fecal connotations to the color ‘brown’ in Brownfield?CHUCK: Only if it’s PHP.JOE: [Chuckles]. Then it’s Poopfield Development?CHUCK: [Chuckles]. Okay, we are not gonna go down that tangent.[Laughter]AJ: Because, I mean honestly, when Mormons make jokes about crap, it never sounds good anyway.CHUCK: Yeah. So anyway, how many of you guys have actually worked on a real Greenfield project? Like been there from day one, that you have it just built yourself.JAMISON: I guess it depends on your definition. Maybe. So we have lots of services at ITV, so I've been part of spinning up completely new services that didn’t exist. We had other sort of similar things already, so some of the decisions were already made for, so we kind of had a style established. But it was still like a separate project.AJ: Do you forget us so soon, Jamison?JAMISON: [Chuckles].AJ: You don’t remember ever working here or getting started…JAMISON: I do. I don’t remember Greenfield stuff; I remember new features, I mean, Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

21 Syys 201214min

027 JSJ The JavaScript Community

027 JSJ The JavaScript Community

The panelists discuss the JavaScript community at large. Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

5 Syys 201249min

026 JSJ Code Organization and Reuse

026 JSJ Code Organization and Reuse

The panelists talk about code organization and reuse. Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

28 Elo 201256min

025 JSJ Require.js with James Burke

025 JSJ Require.js with James Burke

The panelists talk to James Burke about Require.js.Special Guest: James Burke . Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

21 Elo 201235min

024 JSJ Strata.js with Michael Jackson

024 JSJ Strata.js with Michael Jackson

Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

14 Elo 201243min

023 JSJ Phantom.js with Ariya Hidayat

023 JSJ Phantom.js with Ariya Hidayat

The panelists talk to Ariya Hidayat about Phantom.js.Special Guest: Ariya Hidayat. Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

7 Elo 201240min

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