Web zlib.encode

[NickNevzorov]

zlib.encode does not working in web application

import 'dart:io';
import 'dart:convert';

void main() {

  var str = "123";

 print(utf8.decode(zlib.decode(zlib.encode(utf8.encode(str)))));

}

Exception: Uncaught (in promise) Error: Unsupported operation: _newZLibDeflateFilter

C:\Flutter\flutter_zlib>flutter doctor -v
[√] Flutter (Channel beta, 1.18.0-11.1.pre, on Microsoft Windows [Version 10.0.18363.836], locale ru-RU)
    • Flutter version 1.18.0-11.1.pre at d:\android\flutter
    • Framework revision 2738a1148b (3 weeks ago), 2020-05-13 15:24:36 -0700
    • Engine revision ef9215ceb2
    • Dart version 2.9.0 (build 2.9.0-8.2.beta)

[√] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at d:\android\sdk\
    • Platform android-29, build-tools 29.0.3
    • ANDROID_HOME = d:\android\sdk\
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[√] Android Studio (version 3.6)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 46.0.1
    • Dart plugin version 192.8052
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)

[√] Connected device (2 available)
    • Web Server • web-server • web-javascript • Flutter Tools
    • Chrome     • chrome     • web-javascript • Google Chrome 83.0.4103.97

• No issues found!

[UP929312]

This is still an issue almost 2 years later