import { PdfFilter } from './types.js';
/**
 * Creates a Run-Length filter for encoding and decoding PDF stream data.
 * Run-Length encoding is a simple compression algorithm that replaces
 * sequences of repeated bytes with a count and the byte value.
 *
 * @returns A PdfFilter object with encode and decode methods.
 *
 * @example
 * ```typescript
 * const filter = runLength()
 * const compressed = filter.encode(rawData)
 * const decompressed = filter.decode(compressed)
 * ```
 */
export declare function runLength(): PdfFilter;