Pure HTML Escape Sanitizer

sanitizer.ts

//Preview: https://codepen.io/matheusfranco/pen/abgEqMm

export const sanitizeHTML = (input = '', remainHtml = false): string => {
	let cleaned = input.replace(/<(iframe|script|object|embed|style|link)[\s\S]*?>[\s\S]*?<\/\1>/gi, '');
	return remainHtml ? cleaned : cleaned.replace(/<\/?[^>]+>/gi, '');
};

const unsafeHTML = '<p>Hello World!</p><script>alert(\'hi\')</script><b>footer</b>';

console.log(sanitizeHTML(unsafeHTML)); // Output: Hello World!footer
console.log(sanitizeHTML(unsafeHTML, true)); // Output: <p>Hello World!</p><b>footer</b>