/**
 * URL Command
 *
 * Resolves and displays reference URLs with type filters and browser opening support.
 */
import { type ExecutionContext } from "../execution-context.js";
/**
 * Options for the url command.
 */
export interface UrlCommandOptions {
    default?: boolean;
    doi?: boolean;
    pubmed?: boolean;
    pmcid?: boolean;
    open?: boolean;
    uuid?: boolean;
}
/**
 * Result for a single identifier URL resolution.
 */
export interface UrlResult {
    id: string;
    urls: string[];
    error?: string;
}
/**
 * Result of URL command execution.
 */
export interface UrlCommandResult {
    results: UrlResult[];
    openError?: string;
}
/**
 * Execute URL command: resolve URLs for given identifiers.
 */
export declare function executeUrlCommand(identifiers: string[], options: UrlCommandOptions, context: ExecutionContext): Promise<UrlCommandResult>;
/**
 * Format URL command output based on result and options.
 *
 * Rules:
 * - Single ID, no filter: URLs only (1 per line)
 * - Multiple IDs, no filter: TSV (id\turl)
 * - With filter (--default, --doi, etc.): plain URLs, 1 per line
 */
export declare function formatUrlOutput(result: UrlCommandResult, options: UrlCommandOptions): string;
/**
 * Format URL command errors for stderr.
 */
export declare function formatUrlErrors(result: UrlCommandResult): string;
/**
 * Get exit code for URL command result.
 */
export declare function getUrlExitCode(result: UrlCommandResult): number;
/**
 * Handle 'url' command action.
 */
export declare function handleUrlAction(identifiers: string[] | undefined, options: UrlCommandOptions, globalOpts: Record<string, unknown>): Promise<void>;
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