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acdlite / SassMeister-input.scss
Created November 4, 2013 06:39
Experiment using Sass maps to organize Susy Next configuration. Generated by SassMeister.com.
// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----
$grid: (
small: 90% 8 1/4,
medium: 80% 8 1/4,
large: 80% 12 1/4,
);
@acdlite
acdlite / SassMeister-input.scss
Created November 4, 2013 20:40
More experimenting using maps to organize Susy grids (or any other kind of data). Essentially, this is just abstracting calls to map-set() and map-merge to make the syntax more friendly. Generated by SassMeister.com.
// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----
$_grids: ();
@mixin add-grid($g, $name) {
$_grids: map-merge($_grids, ($name: $g));
}
@acdlite
acdlite / convert-video-for-web.sh
Last active August 21, 2017 20:30
Convert videos for web
#!/bin/bash
# Based on http://asisolve.com/ffmpeg-encoding-settings-for-web-video/
for f in src/*.mov
do
name=$(basename $f .mov)
# Convert to mp4
ffmpeg -i $f -vcodec libx264 -preset slow -profile main -crf 25 -acodec libfdk_aac -ab 64k dist/$name.mp4
@acdlite
acdlite / Dataloader.js
Last active August 15, 2018 04:36
Idea for Dataloader component
// The `loader` prop is a Dataloader instance
// https://github.com/facebook/dataloader
class Dataloader extends React.Component {
state = {data: null, isLoaded: false};
componentWillMount() {
this.prefetchData(this.props);
}
componentWillReceiveProps(nextProps) {
if (this.props.id !== nextProps.id || this.props.loader !== nextProps.loader) {
this.setState({isLoaded: false});
@acdlite
acdlite / app.js
Last active November 4, 2018 15:49
Minimal router using existing React Router primitives
const history = createHistory();
const router = createReactRouter(routes);
history.listen((location => {
router.match(location, (err, state, redirectInfo) => {
// Integrate with external state library (Redux), or render directly
React.render(
<RouterComponent {...state} />;
);
});
@acdlite
acdlite / pureRenderMixin.js
Last active July 17, 2019 09:29
Pure Render Mixin in ES6
function pureRenderMixin(Component) {
Component.prototype.shouldComponentUpdate(nextProps, nextState) {
return !shallowEqual(this.props, nextProps) ||
!shallowEqual(this.state, nextState);
}
return Component;
}
class MyComponent extends React.Component {}
@acdlite
acdlite / prefetch.js
Last active June 11, 2021 08:34
Prefetching in React
function prefetch(getKey, getValue, getInitialValue, propName) {
const inFlight = new Set();
const cache = new Map();
return ChildComponent => {
return class extends React.Component {
state = {value: getInitialValue(this.props)};
componentWillReceiveProps(nextProps) {
const key = getKey(nextProps);
if (cache.has(key)) {
// Use cached value
@acdlite
acdlite / flux.js
Last active October 7, 2021 17:19
A Redux-like Flux implementation in <75 lines of code
/**
* Basic proof of concept.
* - Hot reloadable
* - Stateless stores
* - Stores and action creators interoperable with Redux.
*/
import React, { Component } from 'react';
export default function dispatch(store, atom, action) {
@acdlite
acdlite / coordinating-async-react.md
Last active March 20, 2022 12:27
Demo: Coordinating async React with non-React views

Demo: Coordinating async React with non-React views

tl;dr I built a demo illustrating what it might look like to add async rendering to Facebook's commenting interface, while ensuring it appears on the screen simultaneous to the server-rendered story.

A key benefit of async rendering is that large updates don't block the main thread; instead, the work is spread out and performed during idle periods using cooperative scheduling.

But once you make something async, you introduce the possibility that things may appear on the screen at separate times. Especially when you're dealing with multiple UI frameworks, as is often the case at Facebook.

How do we solve this with React?

@acdlite
acdlite / app.js
Last active January 20, 2023 08:23
Quick and dirty code splitting with React Router v4
// getComponent is a function that returns a promise for a component
// It will not be called until the first mount
function asyncComponent(getComponent) {
return class AsyncComponent extends React.Component {
static Component = null;
state = { Component: AsyncComponent.Component };
componentWillMount() {
if (!this.state.Component) {
getComponent().then(Component => {