v6.0.0

6.0.0 (2026-05-12)

• chore!: replace eslint/prettier/husky/ava/nyc with biome/lefthook (01b3bb7)
• feat!: ship ESM-only package, require Node.js >=24, upgrade to TypeScript 6 (df4e1ca)

Bug Fixes

• adds missing build step (3b8f798)
• cli: replace DRY_RUN=1 hint with --dry-run and suppress sent log on dry-run (429023e)
• coerce port flag value to number before validation (39a5ede)
• destructure dry-run key correctly so --dry-run flag activates (1978d6f)
• ensure CLI args take precedence over file configs (c92264e)
• flush buffered metrics before closing socket (358f139)
• socket: set closing flag before await to prevent double-close TOCTOU (92a0d5e)
• socket: set connected flag before awaits to prevent TOCTOU race in close (e6a0f02)
• test: guard ServerTCP.stop() against double invocation (1bcb6f4)
• test: guard ServerTCP.stop() against uninitialized or non-listening server (88e97e6)
• upgrade autocannon from 7.14.0 to 7.15.0 (e8c1672)

BREAKING CHANGES

• Development toolchain completely replaced. ESLint, Prettier,
  Husky, lint-staged, NYC, Ava, pkg, czrc, and commitlint config removed.
  Biome (linter+formatter) and lefthook (git hooks) added instead.
• Package is now ESM-only. CommonJS output has been removed.
  Node.js >=24.0.0 is now required (leverages native CJS→ESM interoperability).
  TypeScript 6 with NodeNext module resolution. CLI binaries now built with
  bun build --compile instead of pkg. Also fixes close() not cancelling the
  buffer flush timeout, which could cause timer leaks after the client is closed.