- opts.headers is read as fetch reads it (a Headers, [name, value] pairs
or a plain object); it was spread as an object, which silently dropped
a Headers instance (a common way to pass Authorization). A caller's
Range is not sent.
- When one range request of a batch fails, the others in flight are
aborted (one AbortController per batch, its signal passed to fetch)
and no new ones start; the first failure is the error. The workers
used to go on issuing requests nobody waited for.
- parallel must be an integer from 1 to 1024 (openUrl) or a positive
integer (fetchRanges): a non-number gave NaN workers, so none ran and
fetchRanges returned nothing.
Tests (test.mjs): headers as object, Headers and pairs reach the fetch;
bad parallel values are option errors; fetchRanges with a 500 on the
third of 20 ranges at parallel 3 starts 3 requests and aborts the 2 in
flight. Before: the Headers case sent no header, 17 requests started
after the failure with none aborted, and parallel "x" returned.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
