Async Show'n'Tell 2018.md

Async's 2018 International Show n' Tell

Wednesday 7th November, 2018

• Full info on the Async website

Speakers gist

Would you like to speak on the night? You'll have five minutes to tell us about something: a project, a library, a technique, a story, or anything else about JavaScript, related tech (HTML, CSS, SVG, etc), or the wider world of web.

Please leave a comment below (you can use Markdown if you want) and include:

• Your name
• Your main website, if you have one
• Twitter username, if you have one
• A sentence or two about your talk
• Any relevant links

Cassie Evans
https://codepen.io/cassie-codes/
twitter @ cassiecodes

I'll be showing off some of my codepens.

Jake 'Sid' Smith
Website: http://jakesidsmith.com
GitHub: https://github.com/jakesidsmith
Twitter: @jakesidsmith

Experimental, type safe, functional, immutable, null propagation / existential property access using ES6 proxies. (wow, what a sentence)

Partially inspired by immer.

const value = doing && doing.this && doing.this.sucks && doing.this.sucks !== undefined ? doing.this.sucks : 'defaultValue';

// So what if we could get
const value = get(obj, (proxy) => proxy.this.rocks, 'defaultValue');
// set
const value = set(obj, (proxy) => proxy.this.rocks, 'newValue');
// or update in a functional, immutable, and type safe way
const value = update(obj, (proxy) => proxy.this.rocks, (previousValue) => ({...previousValue, newKey: 'value'}));

For anyone that's interested, i've now turned what I spoke about at the show 'n' tell into a library! 😃

https://github.com/JakeSidSmith/existential-proxy