Johan Satgé johansatge

Stuff I wish I'd known sooner about service workers

I recently had several days of extremely frustrating experiences with service workers. Here are a few things I've since learned which would have made my life much easier but which isn't particularly obvious from most of the blog posts and videos I've seen.

I'll add to this list over time – suggested additions welcome in the comments or via twitter.com/rich_harris.

Use Canary for development instead of Chrome stable

~~Chrome 51 has some pretty wild behaviour related to console.log in service workers. Canary doesn't, and it has a load of really good service worker related stuff in devtools.~~

Top Six Things You Need To Know About The Withings API*

*where “you” is probably a developer, or at least a strange user

I should preface this by saying that I got a Withings Smart Body Analyzer for Christmas last year and I’ve been generally happy with it. It purports to be able to take my heart rate through my bare feet and that seems not to work for my physiology, but overall I’m a fan. If if their Wikipedia page is to be believed they are having a pretty rad impact on making the Quantified Self movement more for normal people and they only have 20 full time employees. Also they try hard to use SI units, which I can get behind. Anyway, on to the rant.

I originally called this post “Everything wrong with the Withings API” and I meant it. For every useful field I can extract from their “award winning” app, I have spent an hour screaming at the inconsistencies in their implementation or inexplicable holes in their data

Moved to git repository: https://github.com/denji/jetbrains-cleanup-backup

Quick `uninstall` JetBrains settings:

curl -sL https://gist.github.com/denji/9731967/raw/jetbrains-uninstall.sh | bash -s

Quick `backup` JetBrains settings:

curl -sL https://gist.github.com/denji/9731967/raw/jetbrains-backup.sh | bash -s

	/*
	href
	┌────────────────────────────────────────┴──────────────────────────────────────────────┐
	origin │
	┌────────────┴──────────────┐ │
	│ authority │
	│ ┌───────────────┴───────────────────────────┐ │
	│ │ host resource
	│ │ ┌──────────┴─────────────────┐ ┌────────────┴───────────┬───────┐
	│ │ hostname │ pathname │ │

	var str = 'class ಠ_ಠ extends Array {constructor(j = "a", ...c) {const q = (({u: e}) => {return { [`s${c}`]: Symbol(j) };})({});super(j, q, ...c);}}' +
	'new Promise((f) => {const a = function* (){return "\u{20BB7}".match(/./u)[0].length === 2 \|\| true;};for (let vre of a()) {' +
	'const [uw, as, he, re] = [new Set(), new WeakSet(), new Map(), new WeakMap()];break;}f(new Proxy({}, {get: (han, h) => h in han ? han[h] ' +
	': "42".repeat(0o10)}));}).then(bi => new ಠ_ಠ(bi.rd));';

	try {
	eval(str);
	} catch(e) {
	alert('Your browser does not support ES6!')
	}