feat(cli): add passive update notifier and version command - #245
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iamfj
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July 2, 2026 20:15
Adds a `version` command (with a `version check` subcommand) and an inline, stderr-only "update available" notifier that runs before every command. The notifier only fires on interactive TTY runs, caches the npm registry lookup on disk for 24h, and fails silently so it never affects command output or the JSON contract agents rely on. Honors NO_UPDATE_NOTIFIER, LINEARIS_NO_UPDATE_CHECK, and CI.
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What does this PR do?
Adds a
versioncommand (with aversion checksubcommand) plus an inline, stderr-only "update available" notifier that runs before every command. The notifier fires only on interactive TTY runs, caches the npm registry dist-tag lookup on disk for 24h, and fails silently so it never touches stdout or the JSON contract that agents parse. It honorsNO_UPDATE_NOTIFIER,LINEARIS_NO_UPDATE_CHECK, andCI, and picks thelatest/nextrelease channel from the installed version.Closes #
Type of change
Checklist
Testing
Ran `npm run check:ci`, `npx tsc --noEmit`, and `npm test` — all pass. New unit tests in `tests/unit/common/update-notifier.test.ts` cover version comparison, channel selection, cache read/write, the disable env vars, and the notice formatting.
Notes for reviewers
The
preActionhook andprogram.parse()became async (parseAsync) so the notifier can await the registry lookup only when the cache is stale.