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/**
 * Takes a function a lazily runs it once when invoked.
 *
 * Returns cached return value to subsequent calls.
 * Return value will always have reference equality with subsequent calls.
 *
 * @param {function} func - Function to run Once
 * @return {function}
 */
export default function once(func) {

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import { debounce } from 'lodash';


class ResizeObservable {
    constructor() {
        this.listeners = [];

        this._resizeFunc = debounce(() => {
            this.emit();
        }, 300);

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/**
 * Inserts a script tag of src
 * in the Head of HTML.
 *
 * @param {string} src - Src for Javascript request
 * @param {Object} config
 * @return {Promise} - Returns a promise of event when loaded / error
 */
export default function insertScript(src, { async = true, defer = false } = {}) {
    return new Promise((resolve, reject) => {

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The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

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const noop = () => {};

/**
 * This Class creates a Promise object
 * that has its resolve and reject
 * methods publicly exposed.
 *
 * This allows a user to resolve / reject
 * this promise from outside the Promise function scope.
 */

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import fs from 'fs';


/**
 * Returns a Promise from createReadStream pipe.
 * Resolves Promise when end of data event fires.
 * Rejects Promise when error occurs in stream.
 *
 * @param {String} filePath - File Path to create readable stream from
 * @param {Stream} writableStream - Writable Stream to write to

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/* Import in React Project files */
import React, { Component } from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
import thunk from 'redux-thunk';
import { combineReducers, compose, applyMiddleware, createStore } from 'redux';
import { persistStore, autoRehydrate } from 'redux-persist';
import localForage from 'localforage';

/* Import Routes and App Data */

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import React, { PropTypes, Component } from 'react';


class BouncePress extends Component {
	constructor(props) {
		super(props);
		this.bouncePressElem = null;
	}
	addBouncePressRef = (e) => {
		this.bouncePressElem = e;

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import React, { Component, PropTypes } from 'react';
import { LoadingSplash, LoadingSpinner } from 'components/Injectables';


export default class LazyLoad extends Component {
	constructor(props) {
		super(props);
		this.state = {
			loading: true,
			error: '',

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{
    "AL": "Alabama",
    "AK": "Alaska",
    "AS": "American Samoa",
    "AZ": "Arizona",
    "AR": "Arkansas",
    "CA": "California",
    "CO": "Colorado",
    "CT": "Connecticut",
    "DE": "Delaware",