import { Result } from './lib/result.js';
export type NsidString = `${string}.${string}.${string}`;
export declare class NSID {
    readonly segments: readonly string[];
    static parse(input: string): NSID;
    static create(authority: string, name: string): NSID;
    static isValid(nsid: string): nsid is `${string}.${string}.${string}`;
    static from(input: {
        toString: () => string;
    }): NSID;
    constructor(nsid: string);
    get authority(): `${string}.${string}`;
    get name(): string | undefined;
    toString(): NsidString;
}
export declare function ensureValidNsid<I extends string>(input: I): asserts input is I & NsidString;
export declare function parseNsid(nsid: string): string[];
export declare function isValidNsid<I extends string>(input: I): input is I & NsidString;
export declare function validateNsid(input: string): Result<string[]>;
/**
 * @deprecated Use {@link ensureValidNsid} if you care about error details,
 * {@link parseNsid}/{@link NSID.parse} if you need the parsed segments, or
 * {@link isValidNsid} if you just want a boolean.
 */
export declare function ensureValidNsidRegex(nsid: string): asserts nsid is NsidString;
/**
 * Regexp based validation that behaves identically to the previous code but
 * provides less detailed error messages (while being 20% to 50% faster).
 */
export declare function validateNsidRegex(value: string): Result<NsidString>;
export declare class InvalidNsidError extends Error {
}
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