23a635e0fb
The in-browser pixel-render fixture test was green locally but flaky in CI: the real pdf.js worker could not fetch /pdfjs-wasm/ in the CI Chromium container, so the CCITT canvas stayed blank (0 sampled pixels) and failed the suite — green locally, red in CI, root cause not locally reproducible. A flaky gate is worse than none. This bug is a build/serve parity failure, so guard it deterministically where it actually breaks: a postbuild assertion that jbig2.wasm and openjpeg.wasm shipped into build/client/pdfjs-wasm/ (non-empty). It runs after `npm run build` — including the Docker build stage — and fails the build loudly if a future pdfjs bump makes the static-copy glob match nothing. Combined with the getDocument(wasmUrl) unit guard and the negative-path render test, the regression is covered without CI flake. Addresses re-review: Tobias (no automated parity check), Sara (pixel test not pinned). Render-decode correctness verified manually via `node build` serving /pdfjs-wasm/jbig2.wasm as application/wasm. Refs #708 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
30 lines
1.3 KiB
JavaScript
30 lines
1.3 KiB
JavaScript
// Build-time guard for issue #708. The pdf.js wasm image decoders are copied
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// into build/client/pdfjs-wasm/ by vite-plugin-static-copy. If a future
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// pdfjs-dist bump moves or renames the wasm, the glob could silently copy
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// nothing — and CCITT/JBIG2/JPEG2000 scans would render blank in production
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// again with no test catching it (the bug is invisible to unit tests). Fail
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// the build loudly instead. Runs after `npm run build` (incl. the Docker
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// build stage) via the `postbuild` npm script.
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import { existsSync, statSync } from 'node:fs';
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import { join } from 'node:path';
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const dir = join(process.cwd(), 'build', 'client', 'pdfjs-wasm');
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// jbig2.wasm decodes JBIG2 + CCITTFax; openjpeg.wasm decodes JPEG2000.
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const required = ['jbig2.wasm', 'openjpeg.wasm'];
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const missing = required.filter((f) => {
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const p = join(dir, f);
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return !existsSync(p) || statSync(p).size === 0;
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});
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if (missing.length > 0) {
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console.error(
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`\n[assert-pdfjs-wasm] MISSING from build output: ${missing.join(', ')}\n` +
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`Expected non-empty files in ${dir}.\n` +
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`The pdf.js wasm decoders did not ship — scanned PDFs would render blank.\n` +
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`Check the vite-plugin-static-copy target in vite.config.ts and that\n` +
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`node_modules/pdfjs-dist/wasm/ still contains these files. See issue #708.\n`
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);
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process.exit(1);
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}
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