karma-runner/karma

Karma is a JavaScript test runner that manages browser-based test execution, file watching, and result reporting. It provides a CLI and configuration system to launch and control multiple browser instances, including support for Electron, while handling client-side communication and test context isolation. The system includes middleware for serving files and proxies, along with a modular reporter infrastructure for outputting test results.

13 changes.

This period established the Karma test runner by renaming the project from SlimJim, implementing core browser management and client-side execution infrastructure, and adding comprehensive unit tests. It subsequently focused on modularizing the architecture by refactoring middleware, launchers, reporters, and the initialization wizard to improve reliability, configurability, and maintainability.

13 changes.

This period focused on establishing a robust end-to-end testing framework using Cucumber to validate core Karma behaviors, configuration, and runtime stability. It also introduced essential build and development scripts, including client-side bundling and shell completion, while expanding unit test coverage for launchers, middleware, and reporters.

8 changes.

This period focused on expanding the project's core infrastructure by introducing dedicated utility modules for common operations and establishing an isolated, Electron-compatible execution context for tests. Significant effort was also directed toward comprehensive end-to-end testing, including new Cucumber step definitions and coverage for context and module behaviors, alongside automated tooling to streamline the release and documentation process.

Introduces new common modules: a \stringify\ function for serializing JavaScript objects (including handling symbols, functions, errors, and DOM nodes) and a \util\ module providing helper functions like \instanceOf\, \elm\, and \`parseQueryParams).

common · high confidence

The repository now includes the official brand logo in both PDF (logo.ai) and SVG (logo.svg) formats. The SVG file contains the vector graphics for the 'KARMA' wordmark and associated geometric shapes, while the PDF file serves as the source document created in Adobe Illustrator CS6.

logo · high confidence

New scripts in the tools directory now automate post-release tasks: update-contributors.js refreshes the package.json contributors list by parsing git log data, while update-docs.js clones the documentation repository, syncs the new release version, and pushes the changes. These changes support the semantic-release workflow by ensuring documentation and contributor metadata are kept current after each publish.

tools · high confidence

The client-side code has been reorganized into separate modules (karma.js, constants.js, updater.js, main.js) and now includes a new ESLint configuration. This change introduces a visible status banner that displays connection state, test status, and ping latency, while also centralizing configuration values like socket timeout and URL roots into a constants file.

client · high confidence

This entry introduces the initial version of Karma, a Spectacular Test Runner for JavaScript. The \lib\ directory now contains the core implementation, including the command-line interface (CLI) for managing the server and running tests, configuration parsing (supporting JS, CoffeeScript, and TypeScript), and the browser management system (handling connection, execution, and disconnection states). It also includes the file watcher, preprocessor pipeline, and reporter infrastructure.

lib · high confidence

This change introduces the \context/karma.js\ and \context/main.js\ modules, which establish the isolated execution context for tests. It adds support for Electron by detecting when parent window access is unavailable and falling back to \postMessage\ for communication. Additionally, it implements logging for \confirm\, \prompt\, and \alert\ calls, and adds an optional \captureConsole\ feature to intercept and log console output from the test runner.

context · high confidence

This change adds the core static HTML and JavaScript files that power the Karma test runner's browser interface. It introduces \client.html\ as the main entry point for captured browsers, featuring a status banner and an iframe for the test context, along with \client\_with\_context.html\ for single-shot test runs. It also adds \context.html\ and \context.js\ to handle the execution environment within the iframe, including script loading and module support, while \debug.html\ and \debug.js\ provide a standalone debugging runner that logs results to the console without reporting to the server. These files collectively enable the client-side communication, test execution, and debugging capabilities previously handled by other mechanisms.

static · high confidence

The repository now includes dedicated scripts to streamline development workflows. A new \scripts/client.js\ tool unifies client-side bundling, providing \build\, \check\, and \watch\ commands to generate and verify static assets (karma.js and context.js) using Browserify and Watchify. An \scripts/integration-tests.sh\ script has been added to facilitate running integration tests against a packaged version of the library. Additionally, \scripts/karma-completion.sh\ provides shell completion support for the Karma CLI in Bash, Zsh, and other compatible shells.

scripts · high confidence

The lib/utils directory now contains new, dedicated modules (crypto-utils, dns-utils, file-utils, net-utils, path-utils, pattern-utils) that centralize common operations. Notably, dns-utils enforces IPv4-first resolution to ensure the Karma server remains reachable on Node.js \>=17, and net-utils provides a robust mechanism to bind to an available port, preventing EADDRINUSE errors during server startup.

lib/utils · high confidence

This release introduces significant structural and governance changes to the project. A Code of Conduct, Contributing guidelines, and a Security policy have been added to standardize community interaction and vulnerability reporting. Configuration templates for JavaScript, CoffeeScript, TypeScript, and LiveScript have been updated to include a new \concurrency\ option, allowing users to limit the number of simultaneous browser instances. The project's continuous integration and release workflows have been modernized by migrating to GitHub Actions, adopting semantic-release for automated versioning, and integrating commitlint and Husky for commit message validation. Additionally, ESLint configuration has been standardized to the 'standard' style, and various development artifacts like the TODO file and Jake build tasks have been removed in favor of NPM scripts.

(repo-wide) · high confidence

The interactive configuration wizard has been restructured to improve maintainability and extensibility. The logic for handling user input and question flow has been extracted into a dedicated StateMachine, while color output handling is now managed by a separate color\_schemes module. Additionally, config file generation is handled by a new formatters module that supports multiple languages (JavaScript, CoffeeScript, LiveScript, and TypeScript) via specific formatter classes, allowing the wizard to generate appropriate configuration templates based on the selected language.

lib/init · high confidence

The launcher system has been restructured into modular components (base, process, capture\_timeout, retry) to improve reliability and configurability. Users can now configure the process kill timeout via the new \processKillTimeout\ option to prevent hanging on unresponsive browsers, and specify a \retryLimit\ to automatically restart browsers that fail to launch. The implementation also ensures browser output streams are resumed to prevent buffer filling and provides clearer error logging for process failures.

lib/launchers · high confidence

The middleware layer has been restructured into distinct modules (common, karma, proxy, runner, source\_files, stopper, strip\_host) to improve modularity and maintainability. This change introduces support for HTTP Range headers, allowing browsers to request partial file content for improved performance with large files. It also adds configurable custom headers for served files, enabling better control over caching and security policies. The proxy middleware now supports keep-alive agents and configurable changeOrigin settings for more robust upstream proxying. Additionally, the runner middleware now handles incremental file updates (added, changed, removed) rather than full refreshes, and the stopper middleware provides a programmatic way to detach and stop the server.

lib/middleware · high confidence

The reporter system has been restructured to separate core logic from presentation concerns. A new BaseReporter class centralizes test result formatting and event handling, while dedicated color reporters (BaseColorReporter, DotsColorReporter, ProgressColorReporter) now handle terminal styling using the @colors/colors/safe library. This separation ensures that color output is applied consistently across all reporter types (dots, progress, and base) without affecting non-color adapters, and introduces a MultiReporter class to manage multiple reporter instances simultaneously.

lib/reporters · high confidence

The command-line interface entry point has been renamed from bin/slimjim to bin/karma, and the previous bin/slimjim-run script has been removed. This change updates the executable name available to users, aligning the binary with the 'karma' project identity while maintaining the underlying Node.js CLI execution logic.

bin · high confidence

Add client-side unit tests and test infrastructure; Added E2E test support files for basic, pass-opts, and timeout scenarios; Added E2E test support infrastructure for Cucumber and middleware testing; Added E2E tests for JavaScript version tag injection logic; Added E2E tests for module support; Added basic reconnecting test suite; Added e2e tests for custom response headers; Added new Cucumber step definitions and test utilities for end-to-end testing; Added test coverage for custom execution context support; Added tests for framework proxy configuration; Added timer mock for unit tests; Added unit tests for Base and Progress reporters; Added unit tests for core browser, config, and CLI components; Added unit tests for init formatters and state machine; Added unit tests for launcher lifecycle and error handling; Added unit tests for middleware components; Expanded end-to-end test coverage for Karma configuration and runtime features; Test infrastructure configuration updates.

This release updates the project to version 6.4.4, replacing the legacy 'SlimJim' name with 'Karma' and significantly expanding the dependency list to include modern versions of core libraries such as socket.io (4.7.2), chokidar (3.5.1), and log4js (6.4.1). The update also introduces a new package-lock.json file for deterministic builds, removes the obsolete Maven pom.xml build file, and updates the minimum supported Node.js engine to version 10 or higher.

(dependencies) · high confidence

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

• CAI 49 → 49 (-0.2)
• Rubric changed (rubric-2026.09.12 → rubric-2026.09.18) — scores are not directly comparable.

• Code Health 55 → 56 (+0.4)
• Architecture 95 → 96 (+0.7)
• Maturity 50 → 50 (+0.0)
• Readiness 61 → 59 (-2.4)
• Security 61 → 67 (+5.5)
• Accessibility 41 → 41 (+0.0)
• Performance 60 (new)

• Dependency hygiene PARTLY measured — npm pinning read, dependency currency not (no pnpm-resolved versions to grade)
• Documentation: no installation or build instructions (docs/config/05-plugins.md)
• Documentation: no licence statement (docs/intro/01-installation.md)
• Documentation: written for insiders

• Banned license: ua-parser-js
• Documentation: no installation or build instructions (docs/config/01-configuration-file.md)
• Documentation: no usage examples (docs/intro/01-installation.md)
• Outdated (npm): @colors/colors
• Outdated (npm): body-parser
• Outdated (npm): braces
• Outdated (npm): chokidar
• Outdated (npm): glob
• Outdated (npm): graceful-fs
• Outdated (npm): isbinaryfile
• Outdated (npm): lodash
• Outdated (npm): log4js
• Outdated (npm): mime
• Outdated (npm): minimatch
• Outdated (npm): mkdirp
• Outdated (npm): range-parser
• Outdated (npm): rimraf
• Outdated (npm): socket.io
• Outdated (npm): source-map
• Outdated (npm): tmp
• …and 2 more

Written by watchdog.canine.dev from the codebase's own history, inside the signed delivery this page is composed from.

karma-runner/karma was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point a surveyor at a repository you know and see whether you agree with it.