‹ Reports
The Dispatch

GitHub Repo Analysis: lightpanda-io/browser


Executive Summary

The Lightpanda Browser is an open-source, headless browser developed by lightpanda-io, designed for AI and automation tasks. Written in Zig, it emphasizes performance with a low memory footprint and fast execution. It supports automation tools via the Chrome DevTools Protocol but lacks full Web API support. The project is in beta, with active development and community interest, as evidenced by 1,216 commits and numerous branches and issues. The trajectory suggests ongoing feature development and integration improvements.

Recent Activity

Team Members and Their Recent Activities

Pierre Tachoire (krichprollsch)

Katie LPD (katie-lpd)

Spidy0x0

Ari Lotter (arilotter)

Patterns, Themes, and Conclusions

Risks

Of Note

  1. CI Workflow Enhancements: Splitting WPT jobs (#371) reflects efforts to optimize CI processes for efficiency.
  2. Dependency Management: Recent upgrades to zig-js-runtime (#370) demonstrate active dependency management to ensure compatibility.
  3. Platform Expansion Plans: Discussions around Windows support (#369) indicate plans to broaden platform compatibility.

Quantified Reports

Quantify issues



Recent GitHub Issues Activity

Timespan Opened Closed Comments Labeled Milestones
7 Days 7 3 12 3 1
30 Days 16 7 44 6 1
90 Days 28 8 64 13 1
1 Year 48 30 75 18 1
All Time 111 62 - - -

Like all software activity quantification, these numbers are imperfect but sometimes useful. Comments, Labels, and Milestones refer to those issues opened in the timespan in question.

Rate pull requests



2/5
The pull request introduces a feature to cache failed JavaScript fetches, which could be useful for debugging. However, it is marked as a draft and the author is unsure of its usefulness, indicating incomplete work or lack of clarity in purpose. The changes are minimal, affecting only 30 lines across two files, with no tests or documentation updates. The PR lacks thoroughness and significance, making it notably flawed and incomplete.
[+] Read More
2/5
The pull request introduces a new build option for enabling the x86 backend, which is a potentially useful feature. However, it is currently in draft state and has significant issues, as evidenced by runtime panics and test failures. These issues indicate that the implementation is incomplete or flawed, making it unsuitable for merging at this stage. The lack of progress over 221 days further suggests that the PR may not be actively maintained or prioritized. Therefore, it requires substantial work before it can be considered for integration.
[+] Read More
2/5
The pull request introduces a new debug function to the window module, which is a minor enhancement aimed at easing debug logging in JavaScript. However, the change is relatively insignificant, adding only six lines of code without addressing any critical issues or providing substantial improvements. The implementation lacks thorough documentation or tests, and there is no information on its impact or necessity within the broader project context. Overall, it is a small, straightforward addition with limited immediate value.
[+] Read More
3/5
The pull request introduces a new UIEvent struct and its associated functionalities, which is a moderately significant change. It includes tests and integrates with existing modules. However, it has some nontrivial flaws such as incomplete implementation (e.g., TODOs for handling the Window view in UIEvent), and a reviewer has raised concerns about the struct declaration location. These issues prevent it from being rated higher.
[+] Read More
3/5
The pull request introduces a new 'Location' interface to the DOM API, which is a significant addition. However, it is still a work in progress (WIP), as indicated by the commit messages. The implementation appears thorough, with multiple files and lines of code affected, suggesting a comprehensive approach. Yet, the dependency on another open pull request (libdom/pull/21) and the presence of TODO comments indicate incomplete work. The changes are not yet finalized or fully tested, making it an average PR that is unremarkable at this stage.
[+] Read More
3/5
The pull request addresses a bug in the DOM API by handling different event target types, specifically adding support for window targets. The changes are technically sound and improve the code's functionality by introducing a new enum for event target types and updating relevant structures and functions. However, the PR is blocked by another issue, which limits its immediate utility. While the changes are necessary, they are not particularly significant or complex, making this an average update.
[+] Read More
3/5
The pull request splits the existing workflow into separate jobs for 'wpt' and 'wpt-json', which is a reasonable organizational improvement. The changes are minor, involving only 19 lines of code with 18 additions and 1 deletion. This suggests a straightforward modification without significant complexity or risk. However, the impact of this change is limited to CI configuration, and while it may improve clarity or efficiency in CI processes, it does not introduce substantial new functionality or fix critical issues. Therefore, it is an average update that is useful but not groundbreaking.
[+] Read More

Quantify commits



Quantified Commit Activity Over 14 Days

Developer Avatar Branches PRs Commits Files Changes
Pierre Tachoire 4 7/7/0 19 21 473
katie-lpd 1 2/2/0 2 1 101
spidy0x0 1 1/1/0 1 1 2
Ari Lotter 1 1/1/0 1 1 2

PRs: created by that dev and opened/merged/closed-unmerged during the period

Quantify risks



Project Risk Ratings

Risk Level (1-5) Rationale
Delivery 4 The project faces significant delivery risks due to a backlog of unresolved issues (#379, #366) and incomplete pull requests (#194, #244). The high dependency on Pierre Tachoire for contributions further exacerbates this risk. Additionally, critical bugs like the non-working example in the README (#379) could delay delivery if not resolved promptly.
Velocity 4 Velocity is at risk due to the uneven distribution of work among developers, with Pierre Tachoire being the primary contributor. Prolonged inactivity on several pull requests (#315, #244) and the accumulation of unresolved issues indicate potential bottlenecks in the development process. The lack of assigned reviewers for key pull requests further contributes to this risk.
Dependency 3 The project relies heavily on external dependencies such as jsruntime and netsurf, which pose risks if these dependencies are not maintained or updated regularly. Additionally, blocked pull requests due to dependencies on other changes (#367, #356) highlight potential delays in project progress.
Team 3 Team risks are moderate due to the heavy reliance on a single contributor, Pierre Tachoire, which could lead to burnout or bottlenecks if he becomes unavailable. Limited contributions from other team members suggest potential workload distribution issues that could impact team dynamics and project velocity.
Code Quality 3 Code quality is at moderate risk due to incomplete implementations and unresolved review comments in several pull requests (#176, #194). The presence of TODOs in critical files like src/server.zig indicates areas where improvements are needed to maintain high code quality standards.
Technical Debt 3 Technical debt is accumulating due to incomplete features and unresolved issues. The presence of TODO comments in key files like src/dom/document.zig and src/server.zig suggests areas where technical debt could increase if not addressed promptly.
Test Coverage 3 Test coverage is moderate but could be improved. While there is extensive test coverage for certain modules like src/dom/document.zig, gaps remain due to blocked or incomplete tests. The lack of tests for edge cases in src/http/Client.zig also poses risks.
Error Handling 3 Error handling is generally robust across the codebase, with specific error types defined for various operations. However, critical issues like unreachable DOMErr codes (#366) indicate potential gaps that need addressing to ensure comprehensive error handling.

Detailed Reports

Report On: Fetch issues



Recent Activity Analysis

Recent GitHub issue activity for the Lightpanda Browser project shows a mix of bug reports, feature requests, and discussions on enhancements. Notably, there are several issues related to compatibility with automation tools like Puppeteer and Playwright, indicating ongoing efforts to improve integration with these tools. Issues such as #379, where the example in the README does not work, and #375, discussing remote page support, highlight challenges in usability and feature completeness. There are also multiple bug reports concerning crashes and errors when interacting with specific web APIs or using certain functionalities, such as #366 (Unreachable DOMErr code) and #365 (Cannot get page content using Puppeteer).

A recurring theme is the need for better support of Web APIs and handling of various JavaScript execution scenarios. Issues like #358 (Location API) and #263 ([i]frame support) point to gaps in the current implementation that affect compatibility with modern web applications. Additionally, there are ongoing discussions about enhancing the browser's capabilities, such as upgrading dependencies (#372: Upgrade to zig 0.14.0) and expanding platform support (#369: Windows Support?).

Issue Details

Most Recently Created Issues

  • #379: "the example used in the readme does not work" - Priority: High, Status: Open, Created 2 days ago, Updated today.
  • #375: "Remote Page Support" - Priority: Medium, Status: Open, Created 3 days ago, Updated 1 day ago.
  • #372: "Upgrade to zig 0.14.0" - Priority: Low, Status: Open, Created 4 days ago.

Most Recently Updated Issues

  • #379: "the example used in the readme does not work" - Priority: High, Status: Open, Updated today.
  • #375: "Remote Page Support" - Priority: Medium, Status: Open, Updated 1 day ago.
  • #365: "Cannot get page content using puppeteer?" - Priority: High, Status: Open, Updated 1 day ago.

The issues reflect a focus on addressing critical bugs that affect user experience and functionality. The high-priority issues often relate to core functionalities like example scripts not working or integration problems with popular automation frameworks. The project's active development is evident from frequent updates and community engagement through comments and discussions on these issues.

Report On: Fetch pull requests



Analysis of Pull Requests for Lightpanda Browser

Open Pull Requests

Notable Open PRs

  1. PR #371: ci: split wpt wnd wpt-json jobs

    • Created: 4 days ago
    • Details: This PR involves splitting the WPT and WPT-JSON jobs in the CI workflow. It appears to be a straightforward change with minimal lines of code affected. This could improve CI efficiency by isolating job responsibilities.
    • Potential Issue: No assignees or reviewers are listed, which might delay progress.
  2. PR #367: Event target type

    • Created: 5 days ago
    • Details: This PR addresses a bug related to event target types and is dependent on another PR in the libdom repository. It is also blocked by an issue in the zig-js-runtime repository.
    • Notable Problem: The blocking issue (#269) in zig-js-runtime needs resolution before this PR can proceed.
  3. PR #356: dom: first draft for location

    • Created: 11 days ago
    • Details: Introduces a draft implementation for handling document location within the DOM API. It depends on another PR in the libdom repository.
    • Potential Issue: Lack of assigned reviewers might slow down the review process.
  4. PR #315: window: implement a debug() function

    • Created: 59 days ago
    • Details: Implements a debug function for easier logging within the JS environment. The PR has been open for a significant time without updates.
    • Notable Problem: The long duration without progress suggests it may be stalled or low priority.
  5. PR #244: build: add -Dx86 option to enable x86 backend

    • Created: 221 days ago
    • Details: Adds an option to enable x86 backend, but encounters runtime panics and test failures.
    • Notable Problem: Significant technical issues remain unresolved, and the PR has been inactive for months.
  6. PR #194: browser: write a cache file of failed fetched js scripts

    • Created: 324 days ago
    • Details: Aims to cache failed JS script fetches but is currently on hold due to uncertainty about its utility.
    • Notable Problem: The lack of perceived usefulness and prolonged inactivity suggest it may be abandoned.
  7. PR #176: UIEvent

    • Created: 353 days ago
    • Details: Work-in-progress implementation of UIEvent, with feedback indicating uncertainty about struct placement.
    • Notable Problem: The age of the PR and unresolved feedback suggest it may need reevaluation or closure.

Recently Closed Pull Requests

  1. PR #378 & #377: Fix typos in README

    • Both were minor documentation fixes merged swiftly, reflecting active maintenance of project documentation.
  2. PR #374: server: REUSEPORT is not allowed on unix socket

    • Addressed a bug related to Unix socket configuration, fixing issue #373 promptly.
  3. PR #370: upgrade vendor/zig-js-runtime

    • Updated dependencies, ensuring compatibility with recent changes in related projects.
  4. PR #361: docker: update zig v8

    • Updated Dockerfile to use a newer version of Zig V8, indicating ongoing efforts to keep dependencies current.

Summary

The Lightpanda Browser project demonstrates active development with several open pull requests addressing both new features and existing bugs. However, some older pull requests are notably stalled, suggesting either technical challenges or deprioritization. Recent closed pull requests indicate ongoing maintenance and improvements in documentation and dependency management.

Recommendations for Project Maintainers:

  • Prioritize resolving blocking issues like those affecting PR #367.
  • Reassess long-standing open PRs (e.g., #244, #194) to decide whether they should be closed or revived.
  • Assign reviewers to recent PRs to expedite their progress.
  • Consider closing or updating very old PRs that have seen no activity for months unless they are still relevant to current project goals.

Report On: Fetch Files For Assessment



Analysis of Source Code Files

1. .github/workflows/zig-test.yml

  • Purpose: This YAML file configures GitHub Actions for continuous integration, focusing on building and testing the Zig-based project.
  • Structure:
    • The workflow is triggered on pushes to the main branch and pull requests, with specific paths monitored.
    • It defines multiple jobs: zig-build-dev, zig-build-release, zig-test, bench-fmt, and demo-puppeteer.
    • Each job runs on ubuntu-latest and uses various steps, including checking out the code, installing dependencies, building, testing, and uploading artifacts.
  • Quality:
    • The use of conditions (if statements) to skip jobs for draft PRs or to avoid running certain jobs on PRs is well-implemented.
    • The workflow is modular with clear separation of build and test stages.
    • Use of environment variables and secrets for AWS credentials is appropriate for security.
    • There is a consistent use of actions from the GitHub marketplace, ensuring reliability.

2. src/server.zig

  • Purpose: Implements server-side functionality, handling I/O operations, managing connections, and integrating with a JavaScript runtime.
  • Structure:
    • The file is organized into sections for I/O operations, connection handling, session management, and inspector communication.
    • It defines a Ctx struct that encapsulates server context, including sockets, buffers, and state management.
    • Functions are defined for accepting connections (acceptCbk), reading data (readCbk), handling timeouts (timeoutCbk), and sending data asynchronously (sendAsync).
  • Quality:
    • The code is well-commented with clear explanations of each function's purpose.
    • Error handling is robust with logging for different error scenarios.
    • The use of inline functions for common operations like checking if a connection is closed enhances readability.
    • There are TODO comments indicating areas for potential improvement or further implementation.

3. vendor/zig-js-runtime

  • Purpose: This file likely represents a dependency or submodule related to the JavaScript runtime used by the project.
  • Analysis:
    • As this is a vendor file, it typically contains third-party code or libraries essential for the project's functionality.
    • The file's recent updates suggest active maintenance or integration changes with the main project.

4. src/html/history.zig

  • Purpose: Manages the browser's history interface as per HTML specifications.
  • Structure:
    • Defines a History struct with fields and methods to manage scroll restoration mode and state tracking.
    • Includes placeholder methods (_pushState, _replaceState, _go, _back, _forward) with TODO comments indicating incomplete implementation.
  • Quality:
    • The code follows a clear structure with public methods providing access to history properties.
    • Use of enums for scroll restoration modes enhances code clarity.
    • Test cases are included to validate the history interface behavior using predefined scenarios.

5. Dockerfile

  • Purpose: Defines the Docker image build process for containerizing the application.
  • Structure:
    • Begins with a base image (ubuntu:22.04) and installs necessary packages using apt-get.
    • Installs specific versions of Zig and its dependencies (e.g., V8 engine).
    • Clones the repository and initializes submodules required for building the project.
  • Quality:
    • The Dockerfile is well-organized with logical grouping of related commands (e.g., installation steps).
    • Use of ARGs allows flexibility in specifying versions of dependencies like Zig and V8.
    • Cleanup steps are included to remove unnecessary files after installation, optimizing image size.

Overall, the source code files demonstrate good practices in CI/CD configuration, server implementation in Zig, dependency management through vendor files, partial implementation of HTML history management, and efficient Docker image creation.

Report On: Fetch commits



Development Team and Recent Activity

Team Members and Their Recent Activities

Pierre Tachoire (krichprollsch)

  • Commits: 19 in the last 14 days.
  • Recent Work:
    • Fixed typos in README.md.
    • Updated README.md to add badges and other information.
    • Worked on server code to disallow REUSEPORT on Unix sockets.
    • Upgraded vendor/zig-js-runtime and modified CI workflows.
    • Implemented features related to DOM, such as history placeholders and location improvements.
    • Split CI jobs for WPT (Web Platform Tests).
    • Handled event targets in Netsurf and improved location implementation.
  • Collaborations: Merged pull requests from other contributors like spidy0x0, arilotter, and katie-lpd.

Katie LPD (katie-lpd)

  • Commits: 2 in the last 14 days.
  • Recent Work:
    • Updated README.md with significant changes (+48, -48 lines).
  • Collaborations: Submitted pull requests that were merged by Pierre Tachoire.

Spidy0x0

  • Commits: 1 in the last 14 days.
  • Recent Work:
    • Fixed a typo in README.md.

Ari Lotter (arilotter)

  • Commits: 1 in the last 14 days.
  • Recent Work:
    • Fixed a typo in README.md.

Patterns, Themes, and Conclusions

  • The majority of recent activities have been focused on documentation updates, particularly the README.md file, indicating an effort to improve project communication and onboarding for new users or contributors.
  • Pierre Tachoire is the most active contributor, involved in both feature development (e.g., DOM history placeholders) and maintenance tasks (e.g., fixing typos, updating dependencies).
  • There is ongoing work on improving CI processes, as seen with the splitting of WPT jobs, which suggests a focus on enhancing testing and integration workflows.
  • Collaboration among team members is evident through multiple merged pull requests from different contributors, showing a healthy team dynamic and contribution process.
  • The project appears to be actively maintained with frequent commits and updates across various parts of the codebase.