joshuataylor

import { h, Component } from 'preact';
import { Router } from 'preact-router';

import Header from './header';
import Home from '../routes/home';
import Profile from '../routes/profile';
import NotifyChange from "./NotifyChange/index";
// import Home from 'async!../routes/home';
// import Profile from 'async!../routes/profile';

developit

export default (function create(options = {}) {
	const client = {
		headers: options.headers || {},
		create
	};
	const events = {};

	client.emit = (type, e) => {
		events[type] &&
			events[type].slice().map(fn => {

pesterhazy

This gist lists challenges you run into when building offline-first applications based on IndexedDB, including open-source libraries like Firebase, pouchdb and AWS amplify (more).

Note that some of the following issues affect only Safari. Out of the major browsers, Chrome's IndexedDB implementation is the best.

Backing file on disk (WAL file) keeps growing (Safari)

When this bug occurs, every time you use the indexeddb, the WAL file grows. Garbage collection doesn't seem to be working, so after a while, you end up with gigabytes of data.

Random exceptions when working with a large number of indexeddb databases (Safari)

gaearon

// from/to: { left, top, width, height, shape: 'circle' | 'rect' }
function CurvedArrow({ from, to }) {
  function curvedHorizontal(x1, y1, x2, y2) {
    function pos(t) {
      let mx = x1 + (x2 - x1) / 2;
      let p1 = {x: x1, y: y1};
      let p2 = {x: mx, y: y1};
      let p3 = {x: mx, y: y2};
      let p4 = {x: x2, y: y2};
      return {

jamiebuilds

Tradeoffs in value-derived types in TypeScript

Many of the more "advanced" typescript features can be used for creating "value-derived" types.

At its simplest form:

let vehicle = { name: "Van", wheels: 4 }