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@stackline/karma-coverage 1.0.3 — installation and API

A Karma plugin. Generate code coverage.

Install @stackline/karma-coverage

npm install @stackline/[email protected]

Package version: 1.0.3. Metadata verified: 2026-11-12. This is separate from the framework version and demonstration runtime.

Node.js requirement
{"node": ">=10.0.0"}
Accepted peer dependencies (declared ranges)
{}

Tested environments are described in the versioned README and linked source checks. A declared peer range is not evidence that every version in it was tested.

Versioned reference

This reference comes from the published @stackline/[email protected] README. Its upstream attribution and license remain with the source. Benchmark and security statements describe the cited tests and advisories, not a guarantee for every application.

@stackline/karma-coverage

A Karma plugin. Generate code coverage.

Documentation | npm | Issues | Repository

Current package version: 1.0.3

Why this package?

@stackline/karma-coverage is the Stackline-maintained distribution of [email protected]. It is an independent continuation of karma-coverage; original authors and licenses remain credited below.

Compatibility

Item Value
Package @stackline/[email protected]
API target [email protected]
Supported Node.js >=10.0.0
License MIT
Main entry lib/index.js
Runtime dependencies istanbul-lib-coverage, istanbul-lib-instrument, istanbul-lib-report, istanbul-lib-source-maps, istanbul-reports, minimatch

Installation

npm install @stackline/karma-coverage

Preserve existing imports and plugin resolution with an npm alias:

npm install karma-coverage@npm:@stackline/karma-coverage

Usage and API reference

karma-coverage

Generate code coverage using Istanbul.

Installation

The easiest way is to install karma-coverage as a devDependency, by running

npm install karma karma-coverage --save-dev

Configuration

For configuration details see docs/configuration.

Examples

Basic

// karma.conf.js
module.exports = function(config) {
  config.set({
    files: [
      'src/**/*.js',
      'test/**/*.js'
    ],

    // coverage reporter generates the coverage
    reporters: ['progress', 'coverage'],

    preprocessors: {
      // source files, that you wanna generate coverage for
      // do not include tests or libraries
      // (these files will be instrumented by Istanbul)
      'src/**/*.js': ['coverage']
    },

    // optionally, configure the reporter
    coverageReporter: {
      type : 'html',
      dir : 'coverage/'
    }
  });
};

CoffeeScript

For an example on how to use with CoffeeScript see examples/coffee. For an example of how to use with CoffeeScript and the RequireJS module loader, see examples/coffee-requirejs (and also see the useJSExtensionForCoffeeScript option in docs/configuration.md).

Advanced, multiple reporters

// karma.conf.js
module.exports = function(config) {
  config.set({
    files: [
      'src/**/*.js',
      'test/**/*.js'
    ],
    reporters: ['progress', 'coverage'],
    preprocessors: {
      'src/**/*.js': ['coverage']
    },
    coverageReporter: {
      // specify a common output directory
      dir: 'build/reports/coverage',
      reporters: [
        // reporters not supporting the `file` property
        { type: 'html', subdir: 'report-html' },
        { type: 'lcov', subdir: 'report-lcov' },
        // reporters supporting the `file` property, use `subdir` to directly
        // output them in the `dir` directory
        { type: 'cobertura', subdir: '.', file: 'cobertura.txt' },
        { type: 'lcovonly', subdir: '.', file: 'report-lcovonly.txt' },
        { type: 'teamcity', subdir: '.', file: 'teamcity.txt' },
        { type: 'text', subdir: '.', file: 'text.txt' },
        { type: 'text-summary', subdir: '.', file: 'text-summary.txt' },
      ]
    }
  });
};

FAQ

Don't minify instrumenter output

When using the istanbul instrumenter (default), you can disable code compaction by adding the following to your configuration.

// karma.conf.js
module.exports = function(config) {
  config.set({
    coverageReporter: {
      instrumenterOptions: {
        istanbul: { noCompact: true }
      }
    }
  });
};

For more information on Karma see the homepage.

Credits and original authors

  • Original project: karma-coverage.
  • SATO taichi.
  • dignifiedquire.
  • Friedel Ziegelmayer.
  • Aymeric Beaumet.
  • Anton.
  • johnjbarton.
  • dependabot[bot].
  • Jonathan Ginsburg.
  • Mark Ethan Trostler.
  • Tim Kang.
  • hicom150.
  • semantic-release-bot.
  • Anton Shchekota.
  • Maksim Ryzhikov.
  • Nick Malaguti.
  • Mark Trostler.
  • nicojs.
  • Allen Bierbaum.
  • Douglas Duteil.
  • Julen Garcia Leunda.
  • Matt Winchester.
  • Srinivas Dhanwada.
  • Tanguy Krotoff.
  • Wei Kin Huang.
  • Yaroslav Admin.
  • Adam Heath.
  • Andrew Lane.
  • Chris Gladd.
  • Clayton Watts.
  • Dan Watling.
  • Darryl Pogue.
  • Diogo Nicoleti.
  • Dmitry Petrov.
  • Francesco Borzì.
  • Greg Varsanyi.
  • Ian Rufus.
  • James Talmage.
  • Joseph Connolly.
  • Joshua Appelman.
  • Julie.
  • Kyle Welsby.
  • Lloyd Smith II.
  • Maciej Rzepiński.
  • Marceli.no.
  • Matt Lewis.
  • Michael Noack.
  • Michael Stramel.
  • Nick Matantsev.
  • Petar Manev.
  • Robin Böhm.
  • Ron Derksen.
  • Ruben Bridgewater.
  • Sahat Yalkabov.
  • Tanjo, Hiroyuki.
  • Taylor Hakes.
  • Taylor McGann.
  • Tim van der Lippe.
  • Timo Tijhof.
  • Tom Kirkpatrick.
  • Tyler Waters.
  • Vincent Lemeunier.
  • Yusuke Suzuki.
  • abbr.
  • aprooks.
  • carlos.
  • fbergr.
  • piecyk.
  • terussell85.
  • Copyright (C) 2011-2013 Google, Inc.
  • Stackline maintenance: Alexandro Paixao Marques and Stackline contributors.

Original copyright, license notices and contributor acknowledgements remain part of this distribution. Stackline maintenance does not replace authorship of the original work.

License

MIT. See the license and notice files in the repository.

Use this repository's issue tracker for reproducible bugs and feature requests. Join r/Stackline for examples, usage questions and release discussions.