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Simon McManus
Javascript Engineer
Links tagged: js
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Monads on the Cheap I: The Maybe Monad
Don’t worry, this isn’t YAMT (Yet Another Monad Tutorial ). This is a practical post about a code smell that afflicts everyday code, and about an idiom that eliminates that smell. It just so happens that this idiom corresponds to one of the uses for monads in Haskell, but that’s just theory behind the practice, and I’ve saved the theory for the end.
February 9th 2020 -
GitHub - tc39/proposal-optional-chaining
When looking for a property value that's deep in a tree-like structure, one often has to check whether intermediate nodes exist:var street = user.address && user.address.street;
October 11th 2019 -
StateX is a state management library for modern web applications with unidirectional data flow and immutable uni-state (just like redux)
July 29th 2019 -
Does it mutate?
does it mutate?
April 29th 2019 -
We are actively destroying the web | Go Make Things
One of the central themes of my talk on The Lean Web is that we as developers repeatedly take all of the great things the web and browsers give us out-of-the-box, break them, and then re-implement them poorly with JavaScript.
March 19th 2019 -
March 19th 2019untitled - Paint
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CSS Houdini: JS-in-CSS - @iamvdo
Generic worklet to be authored right from CSS
February 22nd 2019 -
CityJS Conference 2019, London UK
CITY OF LONDON JAVASCRIPT CONFERENCE CITYJS CONFERENCE 03 MAY 2019
February 13th 2019 -
February 6th 2019SpeedCurve | JavaScript Dominates Browser CPU
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date-fns - modern JavaScript date utility library
Return the formatted date string in the given format.
December 11th 2018 -
await vs return vs return await - JakeArchibald.com
When writing async functions, there are differences between await vs return vs return await, and picking the right one is important.
February 20th 2018 -
Stimulus: A modest JavaScript framework for the HTML you already have.
A modest JavaScript framework for the HTML you already have.
January 31st 2018 -
The Cost Of JavaScript – Dev Channel – Medium
As we build sites more heavily reliant on JavaScript, we sometimes pay for what we send down in ways that we can’t always easily see. In this post, I’ll cover why a little discipline can help if you’d like your site to load & be interactive quickly on mobile devices.
November 27th 2017 -
Using the Chrome devtools new code coverage feature
Code coverage has finally made it out of experiments and into Chrome Canary, meaning that it will soon reach general availability. This is an exciting feature that is useful both when working with JavaScript and CSS, so I thought I’d do a quick demo and explore how it can be helpful.
July 25th 2017 -
When Fetch API became standard I was thrilled. I will no longer need to use http utility libraries in order to make http calls in my apps. XMLHttpRequest was so low level and awkward (up to its inconsistent camel casing of acronyms!). You didn’t really have a choice but to wrap it with something more comfortable or choose one of tons of open source alternatives like jQuery’s $.ajax(), Angular’s $http, superagent and my personal favorite, axios. But are we truly free of http toolkits?
May 30th 2017 -
What Google AMP means for the JavaScript community · molily
By neglecting web performance, the JavaScript community unintentionally paved the way for AMP.
May 30th 2017