Files like .jsonl that mime-types doesn't know fell through to
application/octet-stream and rendered as "Unsupported binary file" in
the viewer. Replace istextorbinary with isbinaryfile for content-based
detection, and use mime-types for name-based classification with a
textual application/* allowlist.
The streaming transformer now defers classification when the name is
inconclusive and sniffs the first chunk before emitting "transform",
so route.ts and AnonymizedFile.ts get a content-aware Content-Type.
Whitelists .jsonl and .ndjson to short-circuit dataset files.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
istextorbinary returns null for filenames with no extension, and the
isTextFile() guard treated null as "not text" — so terms in LICENSE,
COPYING, AUTHORS, README (extensionless), CHANGELOG, NOTICE, and
similar conventional filenames went through the binary passthrough
in AnonymizeTransformer and were never anonymized.
Add a small whitelist of these names ahead of the istextorbinary call.
Fixes#493.
tdurieux