[claude]

Requested by Sebastian Konowrocki · Slack thread

Before / After

The @leancodepl/image-uploader package previously had no tests. This PR adds 47 unit tests (6 spec files) covering the package's real runtime logic:

• mapFileRejectionsToErrorCode / ErrorCode — code mapping, priority ordering (FileTooLarge > FileTooSmall > FileInvalidType > TooManyFiles), empty/unknown rejections, multi-rejection flattening.
• isExactFile — name/size/lastModified equality across matching and differing inputs.
• getImagePreviewData — base64 data URL output, MIME-type prefix preservation, empty input, and FileReader error rejection.
• tryUploadWithUploadParams — already-uploaded short-circuit, missing file, successful fetch upload, and the error paths (null params, non-ok response, fetch rejection, getUploadParams rejection).
• useUploadImages — accept defaulting/pass-through, add/dedup/remove/clear file flows, drop handling with generated ids, rejection-to-error mapping, optional-callback safety, and cropper config exposure.
• useCropper — queue/open state, FileReader-driven editorImage loading, close-and-advance vs close-and-empty, acceptImage append behavior, and crop/zoom/rotation setters.

How

Vitest + jsdom following sibling-package conventions (@testing-library/react renderHook/act, vi.mock for react-dropzone/uuid); fetch and FileReader are stubbed where needed. Added @testing-library/react, react, and vitest to the package's devDependencies to satisfy the import lint rule.

🤖 Generated with Claude Code

https://claude.ai/code/session_01DXXPnGepYUGie3we1X9PTR

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