Function readOperation

github-actions/browserstack/set-browserstack-env.js:15292–15359

(fr, blob, type, encodingName)

            return "replacement";
          case "unicodefffe":
          case "utf-16be":
            return "UTF-16BE";
          case "csunicode":
          case "iso-10646-ucs-2":
          case "ucs-2":
          case "unicode":
          case "unicodefeff":
          case "utf-16":
          case "utf-16le":
            return "UTF-16LE";
          case "x-user-defined":
            return "x-user-defined";
          default:
            return "failure";
        }
      }
      module.exports = {
        getEncoding
      };
    }
  });

  // 
  var require_util4 = __commonJS({
    ""(exports, module) {
      "use strict";
      var {
        kState,
        kError,
        kResult,
        kAborted,
        kLastProgressEventFired
      } = require_symbols3();
      var { ProgressEvent } = require_progressevent();
      var { getEncoding } = require_encoding();
      var { serializeAMimeType, parseMIMEType } = require_data_url();
      var { types } = __require("util");
      var { StringDecoder: StringDecoder2 } = __require("string_decoder");
      var { btoa } = __require("buffer");
      var staticPropertyDescriptors = {
        enumerable: true,
        writable: false,
        configurable: false
      };
      function readOperation(fr, blob, type, encodingName) {
        if (fr[kState] === "loading") {
          throw new DOMException("Invalid state", "InvalidStateError");
        }
        fr[kState] = "loading";
        fr[kResult] = null;
        fr[kError] = null;
        const stream = blob.stream();
        const reader = stream.getReader();
        const bytes = [];
        let chunkPromise = reader.read();
        let isFirstChunk = true;
        (() => __async(this, null, function* () {
          while (!fr[kAborted]) {