import type { ComparePdfDetailedResult } from '../types/ComparePdfDetailedResult.js';
import type { ComparePdfOptions } from '../types/ComparePdfOptions.js';
/** Sink for CLI output, injected so the orchestration is testable without touching the process. */
export type CliIo = {
    stdout: (text: string) => void;
    stderr: (text: string) => void;
};
/** Dependencies injected into {@link runCli} (process I/O, version, and the comparison function). */
export type CliDeps = {
    io: CliIo;
    version: string;
    compare: (actualPdf: string, expectedPdf: string, options: ComparePdfOptions) => Promise<ComparePdfDetailedResult>;
};
/**
 * Runs the CLI and resolves to a process exit code:
 * - `0` success (PDFs equal, or differences found without `--fail-on-diff`),
 * - `1` differences found with `--fail-on-diff`,
 * - `2` usage error (bad arguments) or a runtime/comparison error.
 *
 * All output goes through the injected {@link CliIo}; no `process` access happens here.
 */
export declare function runCli(argv: readonly string[], deps: CliDeps): Promise<number>;