quagga_dart 0.0.2

  • README.md
  • Example
  • Installing
  • Versions
  • 30


Port of QuaggaJs library. QuaggaJS is a barcode-scanner entirely written in JavaScript supporting real- time localization and decoding of various types of barcodes such as EAN, CODE 128, CODE 39, EAN 8, UPC-A, UPC-C, I2of5 and CODABAR.


A simple usage example:


<script src="packages/quagga_dart/js/dist/quagga.js"></script>

<div class="viewport" id="interactive"></div>


import 'package:quagga_dart/quagga_dart.dart' as quagga;

main() {
      quagga.Constraints constraints = new quagga.Constraints(width: 640, height: 480);
      quagga.InputStream inputStream = new quagga.InputStream(type: "LiveStream", constraints: constraints);
      quagga.Locator locator = new quagga.Locator(patchSize: "medium", halfSample: false);
      quagga.Decoder decoder = new quagga.Decoder(readers: ["code_128_reader"]);
      quagga.InitOption option = new quagga.InitOption(
          inputStream: inputStream, locator: locator, numOfWorkers: 0, locate: true, tracking: true, decoder: decoder);
      quagga.init(option, allowInteropCaptureThis((quagga.Error err) {
        if (err != null && err.message != null) {
      quagga.onDetected(allowInterop((quagga.ResultData data) {

Features and bugs

Please file feature requests and bugs at the issue tracker.



  • Initial version, created by Stagehand


// Copyright (c) 2015, <your name>. All rights reserved. Use of this source code
// is governed by a BSD-style license that can be found in the LICENSE file.

library quagga_dart.example;

import 'package:quagga_dart/quagga_dart.dart';
import 'package:js/js.dart';

main() {


1. Depend on it

Add this to your package's pubspec.yaml file:

  quagga_dart: "^0.0.2"

2. Install it

You can install packages from the command line:

with pub:

$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:quagga_dart/quagga_dart.dart';
Version Uploaded Documentation Archive
0.0.2 May 11, 2016 Go to the documentation of quagga_dart 0.0.2 Download quagga_dart 0.0.2 archive
0.0.1 Dec 12, 2015 Go to the documentation of quagga_dart 0.0.1 Download quagga_dart 0.0.1 archive


We analyzed this package on Apr 23, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.0.0-dev.49.0
  • pana: 0.10.6


Describes how popular the package is relative to other packages. [more]
0 / 100
Code health derived from static analysis. [more]
96 / 100
Reflects how tidy and up-to-date the package is. [more]
5 / 100
Overall score:
Weighted score of the above. [more]
Learn more about scoring.


Detected platforms: web, other

Primary library: package:quagga_dart/quagga_dart.dart with components: js.


  • The description is too short.

    Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.

  • Package is pre-v1 release.

    While there is nothing inherently wrong with versions of 0.*.*, it usually means that the author is still experimenting with the general direction API.

  • Fix analysis and formatting issues.

    Analysis or formatting checks reported 6 hints.

    Run dartfmt to format lib/quagga_dart.dart.

    Run dartfmt to format lib/src/decode_option.dart.

    Similar analysis of the following files failed:

    • lib/src/decoder.dart (hint)
    • lib/src/init_option.dart (hint)
    • lib/src/locator.dart (hint)
    • lib/src/result_data.dart (hint)


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.13.0 <2.0.0
js ^0.6.0 0.6.1
Dev dependencies
test >=0.12.0 <0.13.0