DrBoolean

const compose = (f, g) => x => f(g(x))

const Id = x =>
({
  fold: f => f(x),
  map: f => Id(f(x))
})
Id.of = Id

const Tuple = (_1, _2) =>

jasorod

//
//  SVGPath.swift
//  SVGPath
//
//  Created by Tim Wood on 1/21/15.
//  Updated by Vitaly Domnikov 10/6/2015
//  Updated by Jason Rodriguez 08/29/2017
//  Copyright (c) 2015 Tim Wood, Vitaly Domnikov, Jason Rodriguez. All rights reserved.

import Foundation

bmeck

'use strict';

/*::
type Client = Object;
type Channel = string;
*/
const channels/*: Map<Channel, Set<Client>> */ = new Map;
const clients/*: Map<Client, Set<Channel>> */ = new WeakMap;
const join = (name, client) => {
  if (!channels.has(name)) {

teameh

this._panResponder = PanResponder.create({
  // ----------- NEGOTIATION:
  // A view can become the touch responder by implementing the correct negotiation methods.

    // Should child views be prevented from becoming responder on first touch?
    onStartShouldSetPanResponderCapture: (evt, gestureState) => () => {
      console.info('onStartShouldSetPanResponderCapture');
      return true;
    },

nixta

//
//  AGSSingleFingerZoomGestureRecognizer.swift
//
//  Created by Nicholas Furness on 6/17/16.
//  Copyright © 2016 Esri. All rights reserved.
//

import Foundation
import ArcGIS

DrBoolean

const {Left, Right}  = require('data.either')
const Tuple = require('fantasy-tuples').Tuple2

//List :: Either Null (Tuple a List)

const empty = () =>
  Left(null)

const cons = (x, l) =>
  Right(Tuple(x, l))

brunotavares

const DOUBLE_PRESS_DELAY = 300;

// ...

/**
 * Double Press recognition
 * @param  {Event} e
 */
handleImagePress(e) {
  const now = new Date().getTime();

jondot

  onKeyboardWillHide(e) {
    Animated.timing(this.state.height, {
      toValue: this.listViewMaxHeight,
      duration: e.duration,
      easing: Easing.bezier(0.1, 0.76, 0.55, 0.9)
    }).start();
  },

 onKeyboardWillShow(e) {

jimbolla

function protectFromUnmount() {

    let callbacks = {};
    let count = 0;
    const noop = value => value;

    const wrapCallback = id => function(...params) {
        const raceSafeCallbacks = callbacks;

        if (!raceSafeCallbacks)

paulirish

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

• elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent