js-tts-wrapper/esm/utils/bzip2.js

A JavaScript/TypeScript library that provides a unified API for working with multiple cloud-based Text-to-Speech (TTS) services

let bunzipPromise = null;
let bufferCtor = null;
const loadBunzip = async () => {
    if (!bunzipPromise) {
        bunzipPromise = import("seek-bzip").then((mod) => mod.default || mod);
    }
    return bunzipPromise;
};
const ensureBufferCtor = async () => {
    if (bufferCtor) {
        return bufferCtor;
    }
    const existing = globalThis.Buffer;
    if (existing) {
        bufferCtor = existing;
        return bufferCtor;
    }
    const { Buffer } = await import("buffer");
    globalThis.Buffer = Buffer;
    bufferCtor = Buffer;
    return bufferCtor;
};
/**
 * Decompress a bzip2-compressed payload into a Uint8Array.
 * Works in both Node.js and browser environments by lazily loading
 * the seek-bzip implementation and a Buffer polyfill when necessary.
 */
export const decompressBzip2 = async (data) => {
    const input = data instanceof Uint8Array ? data : new Uint8Array(data);
    const [Bunzip, BufferCtor] = await Promise.all([loadBunzip(), ensureBufferCtor()]);
    const inputBuffer = BufferCtor.from(input);
    const decoded = Bunzip.decode(inputBuffer);
    const decodedBuffer = BufferCtor.isBuffer(decoded) ? decoded : BufferCtor.from(decoded);
    const output = new Uint8Array(decodedBuffer.length);
    output.set(decodedBuffer);
    return output;
};