Replace multiple spaces with a single space

// Replace spaces, tabs and new line characters
const replaceSpaces = (str) => str.replace(/\s\s+/g, ' ');

// Only replace spaces
const replaceOnlySpaces = (str) => str.replace(/  +/g, ' ');

const replaceSpaces = (str: string): string => str.replace(/\s\s+/g, ' ');

const replaceOnlySpaces = (str: string): string => str.replace(/  +/g, ' ');

replaceSpaces('this\n   is     \ta    \rmessage'); // 'this is a message'