@antoniojps/youtubei.js/dist/src/utils/BinarySerializer.js

A JavaScript client for YouTube's private API, known as InnerTube.

import { compress, decompress } from './LZW.js';
export const MAGIC_HEADER = 0x594254; // 'YTB' in hex...
export const VERSION = 1;
export function serialize(data) {
    const json_str = JSON.stringify(data);
    const compressed = compress(json_str);
    const compressed_bytes = new TextEncoder().encode(compressed);
    const buffer = new ArrayBuffer(12 + compressed_bytes.byteLength);
    const view = new DataView(buffer);
    view.setUint32(0, MAGIC_HEADER, true);
    view.setUint32(4, VERSION, true);
    view.setUint32(8, compressed_bytes.byteLength, true);
    new Uint8Array(buffer).set(compressed_bytes, 12);
    return new Uint8Array(buffer);
}
export function deserialize(buffer) {
    if (buffer.byteLength < 12)
        throw new Error('Invalid binary format: buffer too short');
    const view = new DataView(buffer.buffer, buffer.byteOffset);
    const magic = view.getUint32(0, true);
    if (magic !== MAGIC_HEADER) {
        throw new Error('Invalid binary format: magic header mismatch');
    }
    const version = view.getUint32(4, true);
    if (version !== VERSION) {
        throw new Error(`Unsupported binary format version: ${version}`);
    }
    const data_length = view.getUint32(8, true);
    const compressed_data = buffer.slice(12, 12 + data_length);
    const compressed = new TextDecoder().decode(compressed_data);
    const json_str = decompress(compressed);
    return JSON.parse(json_str);
}
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