Angular - short domain pipe (URL to domain - https://github.com/ThunderRoid → github.com)

short-domain.pipe.ts

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
    name: 'shortDomain'
})
export class ShortDomainPipe implements PipeTransform {

    transform(url: string, args?: any): any {
        if (url) {
            if (url.length > 3) {
                let result;
                let match;
                if (match = url.match(/^(?:https?:\/\/)?(?:www\.)?([^:\/\n?=]+)/im)) {
                    result = match[1];
                    if (match = result.match(/^[^.]+\.(.+\..+)$/))
                        result = match[1];
                }
                return result;
            }
            return url;
        }
        return url;
    }
}