| import { getTld } from 'calypso/lib/domains'; | |
| export function getRootDomain( domainName: string ): string { | |
| if ( ! domainName ) { | |
| return ''; | |
| } | |
| const domainNameParts = domainName.split( '.' ); | |
| const tldParts = getTld( domainName ).split( '.' ); | |
| const rootDomainParts = domainNameParts.slice( -( tldParts.length + 1 ) ); | |
| return rootDomainParts.join( '.' ); | |
| } | |