Trim slashes at the beginning and the end of a string

JavaScript version
const trimSlashes = (str) => str.replace(/^\/+|\/+$/g, '');
// Or
const trimSlashes = (str) => str.split('/').filter(Boolean).join('/');
TypeScript version
const trimSlashes = (str: string): string => str.replace(/^\/+|\/+$/g, '');
// Or
const trimSlashes = (str: string): string => str.split('/').filter(Boolean).join('/');
Examples
trimSlashes('//hello/world///'); // hello/world