@logic-pad/core/dist/src/data/serializer/compressor/streamCompressor.js

import CompressorBase from './compressorBase.js';
function ensureCompressionStream() {
    if (!globalThis.CompressionStream || !globalThis.DecompressionStream) {
        console.log('CompressionStream not supported. Loading polyfill.');
        return import('../../../polyfill/streamPolyfill.js');
    }
    return Promise.resolve();
}
const encoder = new TextEncoder();
const decoder = new TextDecoder();
export default class StreamCompressor extends CompressorBase {
    async compress(input) {
        await ensureCompressionStream();
        const blobToBase64 = (blob) => new Promise(resolve => {
            const reader = new FileReader();
            reader.onloadend = () => resolve(reader.result.split(',')[1]);
            reader.readAsDataURL(blob);
        });
        const byteArray = encoder.encode(input);
        const cs = new CompressionStream(this.algorithm);
        const writer = cs.writable.getWriter();
        writer.ready
            .then(() => writer.write(byteArray))
            .then(() => writer.close())
            .catch(console.log);
        return new Response(cs.readable).blob().then(blobToBase64);
    }
    async decompress(input) {
        await ensureCompressionStream();
        const bytes = Uint8Array.from(atob(input), c => c.charCodeAt(0));
        const cs = new DecompressionStream(this.algorithm);
        const writer = cs.writable.getWriter();
        writer.ready
            .then(() => writer.write(bytes))
            .then(() => writer.close())
            .catch(console.log);
        return new Response(cs.readable).arrayBuffer().then(arrayBuffer => {
            return decoder.decode(arrayBuffer);
        });
    }
}