v0.6.0

Pre-release hardening pass over the core NTP client, plus a full offline test suite and packaging verification in CI.

Fixes & hardening

• Instance-scoped state — cache/singleton state moved off module scope; independent new NtpTimeSync(...) instances no longer cross-contaminate.
• Signed clock offset (RFC 5905) — offset now uses ((T2-T1) + (T3-T4))/2 instead of an abs()+heuristic-sign form that returned the wrong result on asymmetric paths.
• IPv6-aware server parsing — supports bracketed IPv6 [::1][:port], bare IPv6 literals, and the existing host / host:port / IPv4[:port] forms with port-range validation.
• Stricter option validation — unknown constructor options now throw Invalid option: <key> instead of being silently ignored.
• Robustness — register the message listener before send (fixes a fast-reply race), count retries on no-progress rounds, and harden socket/listener cleanup on error paths.
• createPacket rewrite — uses Buffer.writeBigUInt64BE, dropping deprecated substr and per-packet string allocations.

Public API

• src/index.ts uses explicit named exports and NtpTimeSyncDefaultOptions is deep-frozen. Same 5 names, runtime mutation blocked.

Dependencies

• ntp-packet-parser bumped to ^0.6.1.

Tooling / CI

• 32 offline unit tests (in-process UDP fixture) covering packet construction, response validation, sample math, instance isolation, retry bounds, socket-leak regression, option validation, and server parsing.
• New verify-package CI job runs npm pack, publint, and attw (0.18.4) to catch exports/files/types regressions before publish.

⚠️ Breaking changes

• Unknown constructor options now throw instead of being ignored.
• Computed offsets change for asymmetric network paths (signed RFC 5905 formula).
• src/index.ts no longer re-exports via export *: RecursivePartial is no longer exported and NtpTimeResult is type-only.

Full changelog: 0.5.0...0.6.0

0.5.0

⚠️ Breaking change: Dropped support for node <18

• feat: Drop Node <18, support v22, pin dev-dependencies by @buffcode in #99

What's Changed

• build(deps-dev): bump prettier from 3.2.4 to 3.2.5 by @dependabot in #73
• build(deps-dev): bump typescript from 5.3.3 to 5.4.2 by @dependabot in #74
• build(deps-dev): bump typescript from 5.4.2 to 5.4.3 by @dependabot in #75
• build(deps-dev): bump typescript from 5.4.3 to 5.4.4 by @dependabot in #76
• build(deps-dev): bump typescript from 5.4.4 to 5.4.5 by @dependabot in #77
• build(deps-dev): bump prettier from 3.2.5 to 3.3.0 by @dependabot in #78
• build(deps-dev): bump prettier from 3.3.0 to 3.3.1 by @dependabot in #79
• build(deps-dev): bump prettier from 3.3.1 to 3.3.2 by @dependabot in #80
• build(deps-dev): bump typescript from 5.4.5 to 5.5.2 by @dependabot in #81
• build(deps-dev): bump typescript from 5.5.2 to 5.5.3 by @dependabot in #82
• build(deps-dev): bump prettier from 3.3.2 to 3.3.3 by @dependabot in #83
• build(deps-dev): bump typescript from 5.5.3 to 5.5.4 by @dependabot in #84
• build(deps-dev): bump typescript from 5.5.4 to 5.6.2 by @dependabot in #85
• build(deps-dev): bump typescript from 5.6.2 to 5.6.3 by @dependabot in #86
• build(deps-dev): bump typescript from 5.6.3 to 5.7.2 by @dependabot in #88
• build(deps-dev): bump prettier from 3.3.3 to 3.4.1 by @dependabot in #89
• build(deps-dev): bump prettier from 3.4.1 to 3.4.2 by @dependabot in #90
• build(deps-dev): bump typescript from 5.7.2 to 5.7.3 by @dependabot in #91
• build(deps-dev): bump prettier from 3.4.2 to 3.5.0 by @dependabot in #92
• build(deps-dev): bump prettier from 3.5.0 to 3.5.1 by @dependabot in #93
• build(deps-dev): bump prettier from 3.5.1 to 3.5.2 by @dependabot in #94
• ci: Updated workflows by @buffcode in #98
• build(deps-dev): bump prettier from 3.5.2 to 3.5.3 by @dependabot in #96
• build(deps-dev): bump typescript from 5.7.3 to 5.8.3 by @dependabot in #97
• feat: Drop Node <18, support v22, pin dev-dependencies by @buffcode in #99

Full Changelog: 0.4.1...0.5.0

0.4.1

What's Changed

• build(deps-dev): bump typescript from 5.1.6 to 5.2.2 by @dependabot in #61
• build(deps): bump ntp-packet-parser from 0.3.0 to 0.3.1 by @dependabot in #62
• build(deps-dev): bump prettier from 3.0.2 to 3.0.3 by @dependabot in #63
• build(deps-dev): bump prettier from 3.0.3 to 3.1.0 by @dependabot in #64
• build(deps-dev): bump typescript from 5.2.2 to 5.3.2 by @dependabot in #65
• build(deps-dev): bump typescript from 5.3.2 to 5.3.3 by @dependabot in #66
• build(deps-dev): bump ts-node from 10.9.1 to 10.9.2 by @dependabot in #67
• build(deps-dev): bump prettier from 3.1.0 to 3.1.1 by @dependabot in #68
• build(deps-dev): bump prettier from 3.1.1 to 3.2.2 by @dependabot in #70
• build(deps-dev): bump prettier from 3.2.2 to 3.2.4 by @dependabot in #71
• feat: Support Node v20 by @buffcode in #72

Full Changelog: 0.3.1...0.4.1

v0.3.1

• fix: Merge plain objects only (thanks @gallynero)
• build(deps-dev): bump prettier from 2.8.8 to 3.0.2
• build: prettier configuration
• build(deps-dev): bump typescript from 5.1.3 to 5.1.6

v0.3.0

• Dropped Node v12 support
• Added Node v18 support (#37)

v0.2.1

Maintenance release

• minimum node version increased to v12 (oldest version which is still in maintenance)
• included dev-dependency updates:
  • prettier 2.6.1 (fc10982)
  • typescript 4.6.3 (a40fd21)
  • ts-node 10.7.0 (f54282d)
  • ntp-packet-parser 0.2.1 (d3a7528)

v0.2.0

Refactored to TypeScript, Github actions for publishing and tests.

Breaking changes:

• there are no default exports anymore, please use import { NtpTimeSync } from "ntp-time-sync" syntax.