#!/usr/bin/env node
import { type NormalizedPdfToPngOptions } from './normalizePdfToPngOptions.js';
/**
 * Help text shown for `--help` and on invalid usage.
 * Exported so it can be asserted in tests without running the full CLI pipeline.
 */
export declare const HELP_TEXT = "Usage: pdf-to-png-converter <pdf-file-path> [options]\n\nOptions:\n  --output-folder <dir>             Folder path where PNG files will be written (required unless --return-metadata-only)\n  --viewport-scale <number>         Scale factor applied to each page viewport\n  --use-system-fonts                Attempt to use fonts installed on the host system\n  --disable-font-face <true|false>  Do not load embedded fonts (true/false)\n  --enable-xfa <true|false>         Process XFA form data (true/false)\n  --pdf-file-password <pwd>         Password for encrypted PDFs\n  --pages-to-process <n,m,...>      Comma-separated list of 1-based page numbers\n  --verbosity-level <number>        pdfjs verbosity level (0=errors, 1=warnings, 5=infos)\n  --return-metadata-only            Return page metadata without rendering images\n  --process-pages-in-parallel       Process pages concurrently\n  --concurrency-limit <number>      Max concurrent pages (parallel) / worker-pool size (worker threads)\n  --render-in-worker-threads        Rasterize pages in a pool of worker threads (multi-core)\n  --silent                          Suppress output unless there is an error\n  --version                         Show version\n  --help                            Show this help message";
type ParsedValues = {
    'output-folder'?: string;
    'viewport-scale'?: string;
    'use-system-fonts'?: boolean;
    'disable-font-face'?: string;
    'enable-xfa'?: string;
    'pdf-file-password'?: string;
    'pages-to-process'?: string;
    'verbosity-level'?: string;
    'return-metadata-only'?: boolean;
    'return-page-content'?: boolean;
    'process-pages-in-parallel'?: boolean;
    'concurrency-limit'?: string;
    'render-in-worker-threads'?: boolean;
    silent?: boolean;
    version?: boolean;
    help?: boolean;
};
/**
 * Parses a CLI string value as a boolean.
 *
 * - `'true'` / `'1'` → `true`
 * - `'false'` / `'0'` → `false`
 * - `undefined` → `undefined` (flag not provided)
 *
 * @throws {Error} When the value is not a recognised boolean string.
 */
export declare function parseBoolean(val: string | undefined): boolean | undefined;
/**
 * Parses a comma-separated string of integers into a `number[]`.
 *
 * Returns `undefined` when `val` is `undefined` (flag not provided).
 *
 * @throws {Error} When any token in the list is not a valid integer.
 */
export declare function parseNumberList(val: string | undefined): number[] | undefined;
/**
 * Parses raw CLI flags into a validated `NormalizedPdfToPngOptions` plus the positional
 * `pdfFilePath`. Single source of normalization — downstream {@link executeConversion}
 * passes the result straight to {@link pdfToPngCore} so the library does NOT re-normalize.
 *
 * The CLI only supports stdout-friendly metadata mode (`--return-metadata-only`) or
 * file-writing image conversion (`--output-folder`). In-memory PNG buffers remain a
 * library-only capability because the CLI does not serialize page results.
 */
export declare function buildPdfToPngOptions(values: ParsedValues, positionals: string[]): {
    pdfFilePath: string;
    options: NormalizedPdfToPngOptions;
};
export declare function executeConversion(pdfFilePath: string, options: NormalizedPdfToPngOptions, logInfo: (...msgs: unknown[]) => void, writeOutput?: (...msgs: unknown[]) => void): Promise<void>;
/**
 * Reads the package version from the adjacent `package.json`.
 * Throws when `package.json` is missing or malformed so packaging defects surface immediately.
 */
export declare function getVersion(): string;
/**
 * Main CLI entry point.
 *
 * Parses `process.argv`, validates all options up-front through
 * {@link normalizePdfToPngOptions} via {@link buildPdfToPngOptions}, and delegates to
 * {@link pdfToPngCore}. Exported so it can be unit-tested without spawning a child process.
 */
export declare function run(): Promise<void>;
export {};