percy/cli
Feb 2025 – Jul 2026
11 Months active
Languages Used
GoJavaScriptShellYAMLJSON
Technical Skills
Backend DevelopmentCLI DevelopmentConfiguration ManagementDebuggingGoJavaScript
Shivanshu Singh
PROFILE
Shivanshu Singh
Worked extensively on the percy/cli repository, delivering features and fixes that improved reliability, security, and release management for a visual testing CLI tool. Focused on robust DOM serialization, secure configuration loading, and enhanced snapshot upload workflows, addressing edge cases such as pages without body elements and complex web components. Applied JavaScript, Go, and Node.js to implement readiness gates, structured error handling, and CI/CD security hardening, including GitHub Actions SHA pinning and least-privilege permissions. Coordinated beta and stable releases through disciplined version control and packaging updates, while expanding test coverage and diagnostics to ensure cross-platform stability and trustworthy release cycles.
Overall Statistics
Feature vs Bugs
68%Features
Repository Contributions
29Total
Bugs
7
Commits
29
Features
15
Lines of code
7,015
Activity Months11
Your Network
59 peopleWork History
July 2026
2 Commits • 1 Features
Jul 1, 2026July 2026 highlights security-focused improvements to the percy/cli CI/CD and code signing, delivering stronger protection against supply-chain and key-leak risks while improving reproducibility and governance for releases.
2 Commits • 1 Features
Jul 1, 2026July 2026 highlights security-focused improvements to the percy/cli CI/CD and code signing, delivering stronger protection against supply-chain and key-leak risks while improving reproducibility and governance for releases.
July 2026
June 2026
4 Commits • 2 Features
Jun 1, 2026June 2026 monthly summary for per Percy/cli: Delivered reliability and security enhancements for snapshot uploads, stabilized readiness diagnostics for SDK integrations, and shipped a critical version bump for beta readiness. Key features delivered include Snapshot Upload Reliability and Security Hardening (re-host non-http(s) iframe URLs, fix async handling in percy.upload, and apply GitHub Actions SHA pinning with least-privilege permissions); Readiness Gate Diagnostics for SDKs using page.evaluate (fix syntax error and ensure diagnostics are returned for Puppeteer/Playwright); Release Readiness: Version bump to 1.32.0-beta.6 across relevant packages.
June 2026
4 Commits • 2 Features
Jun 1, 2026June 2026 monthly summary for per Percy/cli: Delivered reliability and security enhancements for snapshot uploads, stabilized readiness diagnostics for SDK integrations, and shipped a critical version bump for beta readiness. Key features delivered include Snapshot Upload Reliability and Security Hardening (re-host non-http(s) iframe URLs, fix async handling in percy.upload, and apply GitHub Actions SHA pinning with least-privilege permissions); Readiness Gate Diagnostics for SDKs using page.evaluate (fix syntax error and ensure diagnostics are returned for Puppeteer/Playwright); Release Readiness: Version bump to 1.32.0-beta.6 across relevant packages.
May 2026
6 Commits • 3 Features
May 1, 2026May 2026 monthly performance summary (per Percy CLI & SDK readiness initiatives): This month focused on delivering reliability, security, and readiness guarantees across the Percy CLI, DOM serialization path, and SDK integrations, while progressing beta-ready release packaging. The key outcomes improved operational stability, reduced flaky snapshots, and enabled safer beta releases for broader adoption.
6 Commits • 3 Features
May 1, 2026May 2026 monthly performance summary (per Percy CLI & SDK readiness initiatives): This month focused on delivering reliability, security, and readiness guarantees across the Percy CLI, DOM serialization path, and SDK integrations, while progressing beta-ready release packaging. The key outcomes improved operational stability, reduced flaky snapshots, and enabled safer beta releases for broader adoption.
May 2026
April 2026
1 Commits
Apr 1, 2026April 2026 (2026-04): Focused on stabilizing Percy CLI CI, improving cross-platform reliability, and delivering deterministic test outcomes to accelerate feedback. Implemented a targeted set of fixes to eliminate flaky tests on Windows/Firefox and hardened timing and synchronization in the test harness. Result: fewer CI flakes, faster release cycles, and more trustworthy test signals for developers and product teams.
April 2026
1 Commits
Apr 1, 2026April 2026 (2026-04): Focused on stabilizing Percy CLI CI, improving cross-platform reliability, and delivering deterministic test outcomes to accelerate feedback. Implemented a targeted set of fixes to eliminate flaky tests on Windows/Firefox and hardened timing and synchronization in the test harness. Result: fewer CI flakes, faster release cycles, and more trustworthy test signals for developers and product teams.
January 2026
1 Commits • 1 Features
Jan 1, 2026Month: 2026-01 — Percy CLI (percy/cli) focused on beta release preparation and establishing a stable pre-release workflow. Key work: version bump to 1.31.9-beta.0 and publish tag set to beta for pre-release testing; related work captured in Release 1.31.9-beta.0 (#2096).
1 Commits • 1 Features
Jan 1, 2026Month: 2026-01 — Percy CLI (percy/cli) focused on beta release preparation and establishing a stable pre-release workflow. Key work: version bump to 1.31.9-beta.0 and publish tag set to beta for pre-release testing; related work captured in Release 1.31.9-beta.0 (#2096).
January 2026
November 2025
2 Commits • 1 Features
Nov 1, 2025Monthly performance summary for 2025-11 focusing on Percy CLI improvements, bug fixes, and release readiness. Delivered a bug fix for canvas maxWidth resizing affecting image serialization, and prepared beta release with version tagging to enable pre-release testing and gather early feedback. These efforts improve stability, accelerate feedback loops, and set the stage for reliable production releases.
November 2025
2 Commits • 1 Features
Nov 1, 2025Monthly performance summary for 2025-11 focusing on Percy CLI improvements, bug fixes, and release readiness. Delivered a bug fix for canvas maxWidth resizing affecting image serialization, and prepared beta release with version tagging to enable pre-release testing and gather early feedback. These efforts improve stability, accelerate feedback loops, and set the stage for reliable production releases.
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
Correctness94.4%
Maintainability85.6%
Architecture87.6%
Performance84.4%
AI Usage24.8%
Skills & Technologies
Programming Languages
GoJSONJavaScriptShellYAML
Technical Skills
API developmentBackend DevelopmentCI/CDCLI DevelopmentConfiguration ManagementDOM ManipulationDebuggingDevOpsFront End DevelopmentFront-end DevelopmentGitHub ActionsGoJavaScriptNode.jsRelease Management
Repositories Contributed To
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