Sponsors

• Sentry use the code "devchat" for $100 credit
• Clubhouse

Sponsors

• Sentry use the code “devchat” for $100 credit
• Triplebyte
• Clubhouse
• CacheFly

Panel

• Charles Max Wood

Joined by special guest: Aaron Gustafson

Episode Summary 

This episode of JavaScript Jabber comes to you live from Microsoft Ignite. Charles Max Wood talks to Aaron Gustafson who has been a Web Developer for more than 20 years and is also the Editor in Chief at “A List Apart”. Aaron gives a brief background on his work in the web community, explains to listeners how web standardization has evolved over time, where Progressive Web Apps (PWAs) come from, where and how can they be installed, differences between them and regular websites and their advantages. They then delve into more technical details about service workers, factors affecting the boot up time of JavaScript apps, best practices and features that are available with PWAs. 

Aaron mentions some resources people can use to learn about PWAs, talks about how every website can benefit from being a PWA, new features being introduced and the PWA vs Electron comparison. In the end, they also talk about life in general, that understanding what people have gone through and empathizing with them is important, as well as not making judgements based on people’s background, gender, race, health issues and so on.

Links

• Creating & Enhancing Netscape Web Pages
• A List Apart
• A Progressive Roadmap for your Progressive Web App
• Windows Dev Center - Progressive Web Apps
• MDN web docs
• PWA Stats
• PWA Stats Twitter
• Aaron’s website
• Aaron’s Twitter
• https://www.facebook.com/javascriptjabber/
• https://twitter.com/JSJabber

Picks

Aaron Gustafson:

• Homegoing
• Zeitoun

Charles Max Wood:

• Armada 

JSJ BONUS EPISODE: Observables and RxJS Live with Aaron Frost

Mon Jul 29 2019 13:00:56 GMT+0300 (+03)

Episode Number: bonus

Duration: 29:35

https://media.devchat.tv/js-jabber/JSJ_Bonus_Aaron_Frost.mp3

Host: Charles Max Wood

Joined by Special Guest: Aaron Frost

Episode Summary

Aaron Frost joins Charles to talk about what Observables are and why developers should learn about them and use them in their code. He explains the difference between Observables, Promises and Callbacks with an example. Aaron then invites all listeners to attend the upcoming RxJS Live Conference and introduces the impressive speaker line-up. The conference will take place on September 5-6 in Las Vegas and tickets are still available. Aaron also offers a $100 discount to all listeners with the code "chuckforlife". For any questions you can DM Aaron at his Twitter account.

Links

• RxJS Live Conference
• RxJS Conference Tickets
• Aaron's Twitter
• Promises
• Callbacks

Episode Summary

Surma is an open web advocate for Google currently working with WebAssembly team. He was invited on the show today to talk about using web workers and how to move work away from the browser’s main thread. His primary platform is bringing multithreading out of the fringes and into the web. 

The panel talks about their past experience with web workers, and many of them found them isolated and difficult to use. Surma believes that web workers should pretty much always be sued because the main thread is an inherently bad place to run your code because it has to do so much. Surma details the differences between web workers, service workers, and worklets and explains what the compositer is. 

The panel discusses what parts should be moved off the main thread and how to move the logic over. Surma notes that the additional cost of using a worker is basically nonexistent, changes almost nothing in your workflow, and takes up only one kilobyte of memory. Therefore, the cost/benefit ratio of using web workers gets very large. They discuss debugging in a web worker and Surma details how debugging is better in web workers. 

Surma wants to see people use workers not because it will make it faster, but because it will make your app more resilient across all devices. Every piece of JavaScript you run could be the straw that breaks the camel’s back. There’s so much to do on the main thread for the browser, especially when it has a weaker processor, that the more stuff you can move away, the better.

The web is tailored for the most powerful phones, but a large portion of the population does not have the most powerful phone available, and moving things over to a web worker will benefit the average phone. Surma talks about his experience using the Nokia 2, on which simple apps run very slow because they are not being frugal with the user’s resources. Moving things to another thread will help phones like this run faster.  

The panel discusses the benefit of using web workers from a business standpoint. The argument is similar to that for accessibility. Though a user may not need that accessibility all the time, they could become in need of it. Making the app run better on low end devices will also increase the target audience, which is helpful is user acquisition is your principle metric for success. 

Surma wants businesses to understand that while this is beneficial for people in countries like India, there is also a very wide spectrum of phone performance in America. He wants to help all of these people and wants companies acknowledge this spectrum and to look at the benefits of using web workers to improve performance.

Panelists

• Charles Max Wood

• Christopher Buecheler

• Aimee Knight

• AJ O’Neal

With special guest: Surma

Sponsors

• Adventures in DevOps

• Sentry use the code “devchat” for 2 months free on Sentry’s small plan

• Adventures in Angular

Links

• Web workers

• Service workers

• Worklets 

• Ecto model

• Babel

• Swoosh

• Comlink

• WhatsApp

Follow DevChatTV on Facebook and Twitter

Picks

Charles Max Wood:

• For Love of Mother-Not

Surma:

• Follow Surma @DasSurma on Twitter and at dassur.ma

• WebAssembly Spec

AJ O’Neal:

• The GameCube Ultimate

• Pikmin for Wii and GameCube

• Super Monkey Ball

Christopher Buecheler

• CinemaSins Sincast podcast

Guest Paige Niedringhaus has been a developer full time for 3 years, and today she is here to talk about Node 12. One of the things she is most excited about is the ES6 support that is now available, so things that used to require React, Angular, or Vue can now be done in Node. The require function will not have to be used in Node 12. AJ is worried about some of these changes and expresses his concerns. Paige assures him that in the beginning you won’t have to switch things to imports. You may have to change file extensions/types so Node can pick up what it’s supposed to be using. They are also trying to make it compatible with CommonJS.

Node 12 also boasts an improved startup time. The panel discusses what specifically this means. They talk about the code cache and how Node caches the built in libraries that it comes prepackaged with. The V8 engine is also getting many performance enhancements. 

Paige talks about the shift from promises to async. In Node 12, async functions will actually be faster than promises. They discuss some of the difficulties they’ve had in the past with Async08, and especially callbacks. 

Another feature of Node 12 is better security. The transcripted security layer (TLS), which is how Node handles encrypted strains of communication, is upgrading to 1.3. The protocol is simpler to implement, quicker to negotiate sessions between the applications, provides increased end user privacy, and reduces request time. Overall, this means less latency for everybody. 1.3 also gets rid of the edge cases that caused TLS to be way far slower than it needed to be. 

The conversation turns to properly configuring default heap limits to prevent an ‘out of memory’ error. Configuring heap limits is something necessary when constructing an incredibly large object or array of objects. Node 12 also offers formatted diagnostic summaries, which can include information on total memory, used memory, memory limits, and environment lags. It can report on uncaught exceptions and fatal errors. Overall, Node 12 is trying to help with the debugging process. They talk about the different parsers available and how issues with key pairing in Node have been solved. 

Paige talks about using worker threads in Node 12. Worker threads are really beneficial for CPU intensive JavaScript operations. Worker threads are there for those things that eat up all of your memory, they can alleviate the load and keep your program running efficiently while doing their own operations on the sideline, and returning to the main thread once they’ve finished their job. None of the panelists have really used worker threads, so they discuss why that is and how they might use Worker Threads in Node 12. 

In addition, Node 12 is making Native module creation and support easier, as well as all the different binaries a node developer would want to support. Paige makes it a point to mention the new compiler and minimum platform standards. They are as follows:

• GCC minimum 6

• GLIVC minimum 2.17 on platforms other than Mac and Windows (Linux)

• Mac users need at least 8 and Mac OS 10.10

• If you’ve been running node 11 builds in Windows, you’re up to speed

• Linux binaries supported are Enterprise Linux 7, Debian 8, and Ubuntu 14.04

• If you have different requirements, go to the Node website

Panelists

• J.C. Hyatt

• Steve Edwards

• AJ O’Neal

With special guest: Paige Niedringhaus

Sponsors

• Tidelift

• Sentry use the code “devchat” for 2 months free on Sentry’s small plan

• Sustain Our Software

Links

• Async

• CommonJS

• njs

• Promise

• Node

• Event Stream

• llhttp

• llparse

• LLVM

• Papa Parse

• Json.stringify 

• Json.parse

• Optimizing Web Performance TLS 1.3

• Overlocking SSL

• Generate Keypair

Follow DevChatTV on Facebook and Twitter

Picks

J.C. Hyatt:

• AWS Amplify framework

• 12 Rules for Life: An Antidote to Chaos by Jordan Petersen

• React and Gatsby workshops

Steve Edwards:

• The Farside comic coming back?

AJ O’Neal:

• Field of Hopes and Strings

• Link’s Awakening

• Dune

Paige Niedringhaus:

• DeLonghi Magnifica XS Automatic Espresso Machine, Cappuccino Maker

• CONNECT.TECH Conference

Follow Paige on Twitter, Medium, and Github

JavaScript Remote Conf 2020

May 14th to 15th - register now!

Mani Vaya joins Charles Max Wood to talk about how developers can add the enterepreneur hat to the others they wear by starting a side gig. They discuss various ideas around entrepreneurship, the books they got them from, and how they've applied them in their own businesses.

Panel

• Charles Max Wood

Guest

• Mani Vaya

Sponsors

• Taiko

__________________________________________________

"The MaxCoders Guide to Finding Your Dream Developer Job" by Charles Max Wood is now available on Amazon. Get Your Copy Today!

__________________________________________________

Picks

Mani Vaya:

• Good to Great
• The Lean Startup

Charles Max Wood:

• Expert Secrets
• The Masked Singer

Follow JavaScript Jabber on Twitter > @JSJabbber

JavaScript Remote Conf 2020

May 14th to 15th - register now!

Paige Niedringhaus started her career as a Digital Marketer before making the move to becoming a software developer at the Home Depot. She current works with React and Node building internal apps for them. This episode discusses the ins and outs of making that transition in a semi-recent world and community.

Host: Charles Max Wood

Joined By Special Guest: Paige Niedringhaus

Sponsors

• G2i | Enjoy the luxuries of freelancing

• CacheFly

______________________________________

"The MaxCoders Guide to Finding Your Dream Developer Job" by Charles Max Wood is now available on Amazon. Get Your Copy Today!

______________________________________

Links

• JSJ 398: Node 12 with Paige Niedringhaus

• Syntax.

• GitHub testing-library/react-testing-library

• Gatsby

• NextJS

• Interview Cake

• Medium - Paige Niedringhaus

• Follow Paige on Twitter: @pniedri

Picks

Paige Niedringhaus:

• Breville Milk Frother

• Stuff You Should Know

Charles Max Wood:

• Instant Pot

• Sphero BB-8

Lipschitz, Oded

MacFadyen, David, 1964-

Moon, Krystyn R., 1974-

Felkay, Andrew

Konicek-Moran, Richard

Vinitzky-Seroussi, Vered

Horn, Michiel, 1939-

Witchel, Harry

Little, Kimberly K

Lause, Mark A

Kabir, Nahid Afrose

Crommelin, Claude August, 1840-1874

Gunsalus, C. K

Aldama, Frederick Luis, 1969-

Childs, G. W. (Musician)

Boland, Mary L

Busse, Richard C

Pruitt, Lesley J

Krzaklewska, Ewa , author

Chase, Michael

Cousineau, Robert Henri

Scherer, Manual

Spencer, Scott, 1975-

Gaboury, Paul R

Austin, James H., 1925-

Austin, James H., 1925-

Callaars, Josephus

Badger, Michael

Badger, Michael

This study develops and validates a quantitative method to predict the pulmonary to systemic flow ratio in patients with congenital heart disease from chest radiographs using deep learning.