webpack-bundle-analyzer/lib/sizeUtils.js

Webpack plugin and CLI utility that represents bundle content as convenient interactive zoomable treemap

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.getCompressedSize = getCompressedSize;
exports.isZstdSupported = void 0;
var _nodeZlib = _interopRequireDefault(require("node:zlib"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
const isZstdSupported = exports.isZstdSupported = "createZstdCompress" in _nodeZlib.default;

/** @typedef {"gzip" | "brotli" | "zstd"} Algorithm */

/**
 * @param {Algorithm} algorithm compression algorithm
 * @param {string} input input
 * @returns {number} compressed size
 */
function getCompressedSize(algorithm, input) {
  if (algorithm === "gzip") {
    return _nodeZlib.default.gzipSync(input, {
      level: 9
    }).length;
  }
  if (algorithm === "brotli") {
    return _nodeZlib.default.brotliCompressSync(input).length;
  }
  if (algorithm === "zstd" && isZstdSupported) {
    // eslint-disable-next-line n/no-unsupported-features/node-builtins
    return _nodeZlib.default.zstdCompressSync(input).length;
  }
  throw new Error(`Unsupported compression algorithm: ${algorithm}.`);
}