chromatic-skills

Diagnose Storybook configuration issues that block Chromatic or local Storybook, including missing stories, framework or builder mismatches, addon conflicts, preview errors, static asset path issues, and package version drift. Use when Storybook fails to build, Chromatic cannot verify Storybook, stories are missing, or a team needs the smallest config change to restore a working Storybook surface.

Diagnose unexpected Chromatic visual diffs, snapshot inconsistencies, font and resource loading drift, animation timing issues, viewport or globals mismatches, sticky or fixed positioning quirks, and nondeterministic story output. Use when snapshots change unexpectedly or the same code produces inconsistent diffs and you need the narrowest next step to stabilize the snapshot.

Configure Chromatic to capture visual test snapshots across multiple themes (light/dark mode, design tokens, branded variants) using the Modes API and @storybook/addon-themes. Use when the user wants to test components with different themes in Chromatic, set up light/dark mode visual testing, configure @storybook/addon-themes with Chromatic, or apply theme modes at the project, component, or story level.

Configure Chromatic to capture visual test snapshots at multiple viewport sizes using the Modes API. Use when the user wants to test responsive components at different screen sizes, set up viewport breakpoints for Chromatic visual testing, apply viewports to individual stories or globally, control snapshot height with cropToViewport, or migrate from the legacy chromatic.viewports API to the new Modes API.

Recommend Chromatic best practices for Nx and Turborepo monorepos, including one-project versus multi-project topology, workingDir, buildCommand or outputDir, storybookBaseDir, storybookConfigDir, onlyChanged, externals, untraced, shared lockfile behavior, and TurboSnap-safe CI patterns. Use when a monorepo needs an initial setup recommendation or an audit of an existing Chromatic configuration.

Diagnose TurboSnap behavior using logs, config, git context, support-shareable hosted metadata references, and targeted trace commands. Use when you need to classify why TurboSnap is enabled, disabled, unavailable, or tracing the wrong stories, then recommend the smallest valid next step.

Diagnose Chromatic workflow issues involving git history, baselines, pull request event shape, merge queues, merge-base failures, replacement builds, and patch builds. Use when builds compare against the wrong baseline, an ancestor build is not found, pull request comparisons look wrong, or CI git context does not match Chromatic's expectations.

Configure CI/CD pipelines to run Chromatic visual tests automatically. Use when the user wants to set up Chromatic in CI, add Chromatic to GitHub Actions / GitLab / Bitbucket Pipelines / CircleCI / Jenkins / Azure Pipelines, automate visual testing, or run Chromatic on every push.