Changelog

Format: each heading holds the version and the release date. The generator turns the same list into the RSS feed.

2.1.0 — 2026-09-12#

• Added the sverlo tail command: follows a file and prints new records.
• The ~ operator in queries searches for a substring, case-insensitive.
• Nested JSON fields are available in queries with a dot: req.user:42.
• Fixed: a multi-line record cut off by end of file no longer loses its last line.

2.0.1 — 2026-07-02#

• Fixed: the syslog format read December lines in January with the current year. There is now a year option.
• Fixed: rec.fields of logfmt records kept a __proto__ key with a prototype attached.
• Smaller package after removing unused type files.

2.0.0 — 2026-06-10#

• New API: createParser, createTransform and the async iterator parser.stream.
• The record now holds ts, level, msg and fields. Details and the rename table are in the migration guide.
• The pattern parser was rewritten as a state machine; regular-expression backtracking is no longer possible.
• The package is ESM only and requires Node.js 20+.

2.0.0-rc.1 — 2026-05-14#

• First release candidate. The Record shape is frozen.