TypeScript
HTML
<div id="app"></div>CSS
body {
background: #20262E;
padding: 20px;
font-family: Helvetica;
}
#app {
background: #fff;
border-radius: 4px;
padding: 20px;
transition: all 0.2s;
text-align: center;
}TypeScript
const mapArray = (map: (index, )) => {
};