syntax to make these errors go away.</p>
<h4 id="runtime-behavior"><a href="#runtime-behavior">Runtime Behavior</h4></a>
<p>TypeScript is also a programming language that preserves the <em>runtime behavior</em> of JavaScript.
For example, dividing by zero in JavaScript produces <code>Infinity</code> instead of throwing a runtime exception.
TypeScript <strong>never</strong> changes the runtime behavior of JavaScript code.</p>
<p>This means code you move from JavaScript to TypeScript is <strong>guaranteed</st