Tags: offline

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Progressive Web Apps? No, we are building Alien Web Apps | Condé Nast Technology

There’s a lot of misinformation on the internet as to how to build a PWA and how “appy” and SPA-y one must be.

Yes!

This simply isn’t true. Disappointingly, It is what most of the documentation, blog posts and public discourse seem to imply.

Preach it!

I’m so, so happy to see some pushback against the misinformation that progressive web apps automatically imply client-side rendered single page apps built from scratch. There’s so much value to be had in turbo-charging an existing site into a progressive web app.

But what we don’t need is yet another TLA like Alien Web Apps.

How much storage space is my Progressive Web App using? | Dean Hume

You can use navigator.storage.estimate() to get a (vague) idea of how much space is available on a device for your service worker caches.

Infusion: An Inclusive Documentation Builder

Two of my favourite things together at last: pattern libraries and service workers. Infusion is a tool for generating pattern libraries that also work offline.

Thinking about it, it makes total sense that a pattern library should be a progressive web app.

Tame your Service Worker before your Progressive Web App go into the wild by Maxim Salnikov

There are some great service worker optimisation tips in these slides.

Betting on the Web

Along the lines of John’s recent post, Henrik makes the business case for progressive web apps.

He also points out how they can be much better than native apps for controlling hardware.

They can be up and running in a fraction of the time whether or not they were already “installed” and unlike “apps” can be saved as an app on the device at the user’s discretion!

Essentially they’re really great for creating “ad hoc” experiences that can be “cold started” on a whim nearly as fast as if it were already installed.

Yes, That Web Project Should Be a PWA · An A List Apart Article

A fantastic piece by Aaron who—once again—articulates what I’ve been thinking:

Your site—every site—should be a PWA.

He clearly explains the building blocks of progressive web apps—HTTPS, a manifest file, and a service worker—before describing different scenarios for different kinds of sites:

  • Informational
  • Periodical
  • Transactional
  • Social
  • Software
  • Institutional

Progressive Web Apps may seem overly technical or beyond the needs of your project, but they’re really not. They’re just a shorthand for quality web experiences—experiences that can absolutely make a difference in our users’ lives.

Highly recommended!

A Progressive Roadmap for your Progressive Web App - Cloud Four

Jason lists the stages of gradually turning the Cloud Four site into a progressive web app:

And you can just keep incrementally adding and tweaking:

You don’t have to wait to bundle up a binary, submit it to an app store, and wait for approval before your customers benefit.

Offline POSTs with Progressive Web Apps – Web Dev @ Microsoft – Medium

This is a smart way to queue up POST submissions for later if the user is offline. It’s not as powerful as background sync (because it requires the user to revisit your site) but it’s a good fallback for browsers that support service workers but don’t yet support background sync

Attachment #317095 for bug #175115

I’ve never been so excited by a single diff in a JSON file.

Service workers are coming to Safari.

Web Publications for the Open Web Platform: Vision And Technical Challenges

Given my experience publishing Resilient Web Design as a web book, I think I should take a good look at this nascent spec.

What we envision for Packaged Web Publications is similar to the goals and techniques of Progressive Web Apps: breaking the boundaries between web sites and mobile apps, an emphasis on “offline” paradigms, and so on. The time is right to broaden the scope and power of the web to include publications.

You’re Offline | Max Böck - Frontend Web Developer

This looks like a sensible way to detect if the user is offline, and provide appropriate feedback, like making certain links or forms inactive.

Introducing PWAs

The slides from Calum’s presentation about progressive web apps. There are links throughout to some handy resources.

How to turn your website into a PWA | Max Böck - Frontend Web Developer

This primer on progressive web apps starts by dispelling some myths:

  1. Your thing does not have to be an “Application” to be a PWA.
  2. Your thing does not have to be a Javascript-powered single page app.
  3. PWAs are not specifically made for Google or Android.
  4. PWAs are ready and safe to use today.

Then it describes the three-step programme for turning your thing into a progressive web app:

  1. The Manifest.
  2. Go HTTPS.
  3. The Service Worker.

Your Site—Any Site—Should be a PWA | Aaron Gustafson

Tell it, brother!

PWAs don’t require you use a particular JavaScript framework or any JavaScript framework at all. You don’t need to be building a Single Page App either.

Service Worker gotchas

A great collection of learned lessons from implementing service workers.

I really, really like it when people share their own personal experiences and “gotchas!” like this.

Johannes Dachsel – Making my website work offline – a service worker module for Processwire

If you use the ProcessWire Content Management System, Johannes has written a handy plug-in that allows you to specify which files should be cached by a service worker.

HN PWA - Hacker News readers as Progressive Web Apps

Of all the sites to pick to demo progressive web apps, we get the cesspit that is Hacker News …I guess it is possible to polish a turd.

Anyway, here are some examples of using frameworks to create alternative Hacker News readers. So the challenge here is to display some text to read..

Four of them render absolutely no content without JavaScript.

In the Hall of Shame we have React, Preact, Angular, and Polymer.

In the Hall of Fame, we have the ones doing it right: React, Vue, and Viper.

That’s right: React appears in both. See, it’s not about the tools; it’s about how you use ‘em.

Service Worker Security FAQ - The Chromium Projects

Got questions about the security of service workers? This document probably has the answer.

Going offline. — Ethan Marcotte

Ethan has added a service worker to his site and he’s got a nifty little recipe for showing a list of saved-for-offline articles.

Offline Web Applications | Udacity

This is a free online video course recorded by Jake a couple of years back. It’s got a really good step-by-step introduction to service workers, delivered in Jake’s typically witty way. Some of the details are a bit out of date, and I must admit that I bailed when it got to IndexedDB, but I highly recommend giving this a go.

There’s also a free course on web accessibility I’m planning to check out.