{"id":45301330,"url":"https://github.com/github/storybook-addon-performance-panel","last_synced_at":"2026-02-26T10:03:23.582Z","repository":{"id":339625199,"uuid":"1161710266","full_name":"github/storybook-addon-performance-panel","owner":"github","description":"A Storybook Addon for tracking web performance","archived":false,"fork":false,"pushed_at":"2026-02-22T04:38:58.000Z","size":1054,"stargazers_count":147,"open_issues_count":2,"forks_count":1,"subscribers_count":2,"default_branch":"main","last_synced_at":"2026-02-22T10:54:02.063Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"http://github.github.com/storybook-addon-performance-panel/","language":"TypeScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/github.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":"CONTRIBUTING.md","funding":null,"license":"LICENSE","code_of_conduct":"CODE_OF_CONDUCT.md","threat_model":null,"audit":null,"citation":null,"codeowners":"CODEOWNERS","security":"SECURITY.md","support":"SUPPORT.md","governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2026-02-19T12:30:50.000Z","updated_at":"2026-02-22T08:43:17.000Z","dependencies_parsed_at":"2026-02-21T05:01:23.317Z","dependency_job_id":null,"html_url":"https://github.com/github/storybook-addon-performance-panel","commit_stats":null,"previous_names":["github/storybook-addon-performance-panel"],"tags_count":2,"template":false,"template_full_name":null,"purl":"pkg:github/github/storybook-addon-performance-panel","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/github%2Fstorybook-addon-performance-panel","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/github%2Fstorybook-addon-performance-panel/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/github%2Fstorybook-addon-performance-panel/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/github%2Fstorybook-addon-performance-panel/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/github","download_url":"https://codeload.github.com/github/storybook-addon-performance-panel/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/github%2Fstorybook-addon-performance-panel/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29739024,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-23T04:51:08.365Z","status":"ssl_error","status_checked_at":"2026-02-23T04:49:15.865Z","response_time":90,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2026-02-21T05:00:39.503Z","updated_at":"2026-02-23T07:00:48.821Z","avatar_url":"https://github.com/github.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# @github-ui/storybook-addon-performance-panel\n\nA Storybook addon that provides real-time performance monitoring for stories. It displays comprehensive metrics including frame timing, input responsiveness, memory usage, React profiling, and more.\n\n\u003cimg width=\"1519\" height=\"1039\" alt=\"Addon panel loaded on storybook\" src=\"https://github.com/user-attachments/assets/31c7a847-b226-45d9-a113-63b9cdd35714\" /\u003e\n\n## Quick Start\n\nAdd the addon to your Storybook configuration:\n\n```ts\n// .storybook/main.ts\nconst config = {\n  addons: [\n    '@github-ui/storybook-addon-performance-panel/preset',\n  ],\n}\n```\n\n```ts\n// .storybook/preview.ts\nimport {definePreview} from 'storybook/preview-api'\nimport addonPerformancePanel from '@github-ui/storybook-addon-performance-panel'\n\nexport default definePreview({\n  addons: [addonPerformancePanel()],\n})\n```\n\nThe performance panel appears as a \"⚡ Performance\" tab at the bottom of Storybook.\n\n## Project Structure\n\nThis is an npm workspaces monorepo:\n\n| Package | Description |\n|---------|-------------|\n| [packages/storybook-addon-performance-panel](./packages/storybook-addon-performance-panel) | The addon — collectors, panel UI, and types |\n| [packages/docs](./packages/docs) | Documentation site built with Storybook |\n\n## Documentation\n\nSee the [addon README](./packages/storybook-addon-performance-panel/README.md) for full documentation including:\n\n- Architecture and how the addon works\n- All metrics collected (frame timing, input, main thread, LoAF, CLS, React, memory)\n- Metric thresholds and color coding\n- Browser compatibility\n- Interpreting metrics and troubleshooting guide\n\n## Development\n\n```bash\nnpm install          # Install dependencies\nnpm run build        # Build the addon\nnpm test             # Run tests\nnpm run lint         # Lint\nnpm run tsc          # Type check\nnpm run docs         # Start the docs site locally\n```\n\n## Contributing\n\nSee [CONTRIBUTING.md](./CONTRIBUTING.md) for development setup and pull request guidelines.\n\n## License\n\n[MIT](./LICENSE)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgithub%2Fstorybook-addon-performance-panel","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fgithub%2Fstorybook-addon-performance-panel","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fgithub%2Fstorybook-addon-performance-panel/lists"}