jacob-lcs

let storage = window.localStorage;

/**
 * 判断是否为 JSON 对象
 * @param obj
 * @returns {boolean}
 */
function isJSON(obj) {
    obj = JSON.stringify(obj);
    return /^\{[\s\S]*\}$/.test(obj);

davidrleonard

const Promise = require('bluebird');
const sh = require('shelljs');

/**
 * Asynchronously executes a shell command and returns a promise that resolves
 * with the result.
 * 
 * The `opts` object will be passed to shelljs's `exec()` and then to Node's native
 * `child_process.exec()`. The most commonly used opts properties are:
 * 

bcherny

terminal:

npm i --save-dev rollup rollup-watch rollup-plugin-typescript typescript typings
npm i -S react react-dom
./node_modules/.bin/typings install react react-dom --save
mkdir src dist
touch src/index.tsx

inorganik

import { useEffect, useRef } from 'react'

// playground: https://stackblitz.com/edit/react-ts-nv5fxe?file=App.tsx

export default function App() {
  
  // create a ref and declare an instance for each countUp animation
  const countupRef = useRef(null);
  let countUpAnim;