// Type declarations for the plain-ESM helper module lib/domains.mjs.
export declare const FREEMAIL_DOMAINS: Set<string>
export declare function hostFromUrl(url: string): string
export declare function hostFromEmail(email: string): string
export declare function registrableDomain(host: string): string
export declare function domainFromUrl(url: string): string
export declare function domainFromEmail(email: string): string
export declare function isFreemailDomain(domain: string): boolean
export declare function isValidEmail(email: string): boolean
export declare function searchVariants(text: string): string[]