percy/cli
Feb 2025 – Sep 2025
5 Months active
Languages Used
GoJavaScriptShellYAML
Technical Skills
Backend DevelopmentCLI DevelopmentConfiguration ManagementDebuggingGoJavaScript
Shivanshu Singh
PROFILE
Shivanshu Singh
Shivanshu Si worked on the percy/cli repository, delivering features and fixes that improved reliability, security, and release management for the CLI tool. Over five months, Shivanshu enhanced DOM serialization, introduced resource payload size guardrails, and implemented a sanitizeObject utility to prevent prototype pollution during configuration merges. Using Go and JavaScript, Shivanshu addressed edge cases in content-length parsing and shadow DOM stylesheet ordering, ensuring robust handling across diverse environments. The work also included refining CI workflows with GitHub Actions and managing stable and beta releases, demonstrating a thorough approach to backend development, testing, and version control in a fast-moving project.
Overall Statistics
Feature vs Bugs
64%Features
Repository Contributions
13Total
Bugs
4
Commits
13
Features
7
Lines of code
1,477
Activity Months5
Your Network
40 people
Work History
September 2025
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for percy/cli focusing on delivering a more accurate DOM serialization and reinforcing CI reliability, with release readiness for the next cycle. Highlights include a feature enhancement to shadow DOM serialization and a robustness fix to the CI workflow, contributing to higher test fidelity and faster, more reliable ship cycles.
2 Commits • 1 Features
Sep 1, 2025September 2025 monthly summary for percy/cli focusing on delivering a more accurate DOM serialization and reinforcing CI reliability, with release readiness for the next cycle. Highlights include a feature enhancement to shadow DOM serialization and a robustness fix to the CI workflow, contributing to higher test fidelity and faster, more reliable ship cycles.
September 2025
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025: Focused on release engineering for Percy CLI. Delivered a stable CLI release: v1.31.0, which includes the previous v1.30.11, accompanied by release notes and a version bump. This work reinforces release management discipline, improves downstream upgrade predictability, and provides a solid baseline for upcoming CLI improvements.
June 2025
1 Commits • 1 Features
Jun 1, 2025June 2025: Focused on release engineering for Percy CLI. Delivered a stable CLI release: v1.31.0, which includes the previous v1.30.11, accompanied by release notes and a version bump. This work reinforces release management discipline, improves downstream upgrade predictability, and provides a solid baseline for upcoming CLI improvements.
April 2025
2 Commits • 1 Features
Apr 1, 2025April 2025: Focused on stability of Percy CLI and enabling beta release for 1.30.11-beta.1. Delivered a robustness fix for DOM serialization on pages without a body and packaging/configuration updates for the beta release. The work improves reliability on diverse page structures and accelerates beta distribution.
2 Commits • 1 Features
Apr 1, 2025April 2025: Focused on stability of Percy CLI and enabling beta release for 1.30.11-beta.1. Delivered a robustness fix for DOM serialization on pages without a body and packaging/configuration updates for the beta release. The work improves reliability on diverse page structures and accelerates beta distribution.
April 2025
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 - percy/cli Key deliverables: - Shadow DOM Stylesheet Ordering Fix: Correctly appends new stylesheets after the last existing one in Shadow DOM and document fragments; tests updated to assert the correct count and order of serialized stylesheets. - CLI Tool Beta Release v1.30.9-beta.1: Release tagging completed (PR #1883) to enable testing and early access (no code changes in this cycle). Impact: - Improves rendering reliability and predictability for users; strengthens regression safety with updated tests; accelerates feedback through beta access. Technologies/skills: - Shadow DOM, document fragments, stylesheet serialization, test coverage, release tagging, PR-based workflows.
March 2025
2 Commits • 1 Features
Mar 1, 2025March 2025 - percy/cli Key deliverables: - Shadow DOM Stylesheet Ordering Fix: Correctly appends new stylesheets after the last existing one in Shadow DOM and document fragments; tests updated to assert the correct count and order of serialized stylesheets. - CLI Tool Beta Release v1.30.9-beta.1: Release tagging completed (PR #1883) to enable testing and early access (no code changes in this cycle). Impact: - Improves rendering reliability and predictability for users; strengthens regression safety with updated tests; accelerates feedback through beta access. Technologies/skills: - Shadow DOM, document fragments, stylesheet serialization, test coverage, release tagging, PR-based workflows.
February 2025
6 Commits • 3 Features
Feb 1, 2025February 2025 (2025-02) focused on strengthening reliability, security, and release hygiene in percy/cli. Delivered payload guardrails to skip large resources during discovery and added tests for handling files up to and beyond 25MB/100MB, reducing risk of resource overconsumption in CI runs. Introduced sanitizeObject utility to prevent prototype pollution during object merging, with safeguards against unsafe keys and tests validating correct behavior. Improved release processes by updating versioning and tagging for the 1.30.x series, including v1.30.8 and v1.30.8-beta.2, plus prep for v1.30.9. Fixed content-length handling to be robust against NaN values, missing headers, and case-insensitive names, with tests to ensure stability across environments. These changes collectively improve stability, security, and velocity in downstream usage and releases, delivering tangible business value and stronger platform guarantees.
6 Commits • 3 Features
Feb 1, 2025February 2025 (2025-02) focused on strengthening reliability, security, and release hygiene in percy/cli. Delivered payload guardrails to skip large resources during discovery and added tests for handling files up to and beyond 25MB/100MB, reducing risk of resource overconsumption in CI runs. Introduced sanitizeObject utility to prevent prototype pollution during object merging, with safeguards against unsafe keys and tests validating correct behavior. Improved release processes by updating versioning and tagging for the 1.30.x series, including v1.30.8 and v1.30.8-beta.2, plus prep for v1.30.9. Fixed content-length handling to be robust against NaN values, missing headers, and case-insensitive names, with tests to ensure stability across environments. These changes collectively improve stability, security, and velocity in downstream usage and releases, delivering tangible business value and stronger platform guarantees.
February 2025
Activity
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Quality Metrics
Correctness87.6%
Maintainability83.2%
Architecture80.0%
Performance80.8%
AI Usage20.0%
Skills & Technologies
Programming Languages
GoJavaScriptShellYAML
Technical Skills
Backend DevelopmentCI/CDCLI DevelopmentConfiguration ManagementDOM ManipulationDebuggingFront End DevelopmentFront-end DevelopmentGitHub ActionsGoJavaScriptNode.jsRelease ManagementSecurityTesting
Repositories Contributed To
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