Large PDFs (50 MB+) crashed on import/open. pdf.js requests hundreds of
byte ranges in a burst while parsing the document structure, and
foliate-js makePDF dispatched them all concurrently. On Android each read
is served through the WebView's rangefile custom scheme
(shouldInterceptRequest); the flood of simultaneous native requests
exhausts the WebView's Java heap (OutOfMemoryError in handleRequest).
Bump foliate-js to cap in-flight range reads at 6 (the implicit per-host
limit a real HTTP transport already gets), and add a regression test
asserting makePDF keeps at most 6 range reads in flight.
Verified live on a Xiaomi 13 (Android 16 / WebView 147) via CDP: max
concurrent range reads drop from 753 to 6 with no change in open time.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Huang Xin
6e9faaa874