vite-plugin-singlefile-compression/dist/compress.js

Compress all assets and embeds them into `dist/index.html`, making it convenient to share as a single HTML file.

import base128 from "base128-ascii";
import zlib from 'zlib';
export function compress(format, buf, useBase128) {
    const options = {
        level: zlib.constants.Z_BEST_COMPRESSION,
    };
    let outBuf;
    switch (format) {
        case "deflate":
            outBuf = zlib.deflateSync(buf, options);
            break;
        case "deflate-raw":
            outBuf = zlib.deflateRawSync(buf, options);
            break;
        case "gzip":
            outBuf = zlib.gzipSync(buf, options);
            break;
        default:
            throw `unknown compress format ${format}`;
    }
    return useBase128
        ? base128.encode(Uint8Array.from(outBuf)).toJSTemplateLiterals()
        : outBuf.toString('base64');
}