Replace all line breaks with br elements

JavaScript

const nl2br = (str) => str.replace(new RegExp('\r?\n', 'g'), '<br>')

// In React
str.split('\n').map((item, index) => (
  <React.Fragment key={index}>
    {item}
    <br />
  </React.Fragment>
))

TypeScript

const nl2br = (str: string): string => str.replace(new RegExp('\r?\n', 'g'), '<br>')