import { type ReadFileSystem, type ProgressCallback, type ReadSource, ReadStream } from './file-system';
/**
 * ReadSource implementation wrapping a Uint8Array or ArrayBuffer.
 * Size is always exact. Always seekable.
 */
declare class MemoryReadSource implements ReadSource {
    readonly size: number;
    readonly seekable: boolean;
    private data;
    private closed;
    constructor(data: Uint8Array | ArrayBuffer);
    read(start?: number, end?: number): ReadStream;
    close(): void;
}
/**
 * ReadFileSystem for reading from named memory buffers.
 * Useful for testing or when data is already in memory.
 */
declare class MemoryReadFileSystem implements ReadFileSystem {
    private buffers;
    /**
     * Store a named buffer.
     * @param name - Name/path for the buffer
     * @param data - Data to store
     */
    set(name: string, data: Uint8Array): void;
    /**
     * Get a stored buffer by name.
     * @param name - Name/path of the buffer
     * @returns The stored data or undefined
     */
    get(name: string): Uint8Array | undefined;
    createSource(filename: string, progress?: ProgressCallback): Promise<ReadSource>;
}
export { MemoryReadFileSystem, MemoryReadSource };