Jest matcher for visual regression testing of PDF documents. Behaves just like Jest snapshots do. Under the hood, it uses pdf.js for conversion of a pdf to png. In node, pdf.js depends on canvas. Finally, the comparison is happening via pixelmatch. In order to be platform agnostic, the png conversion and png comparison is performed by a small server running aside, available as a Docker image and communicating with Jest matcher using tRCP.
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