Changelog

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v0.2.0 (2026-06-15)

This release replaces the pool of tailwindcss CLI processes with a single warm CLI per resolved configuration.

Formatting is serial within a file, so only the first full-tree mix format ever needed more than one CLI. Format-on-save, formatting a single file, and re-running mix format after edits (which skips unchanged files) each booted the whole pool but used only one CLI. Those cases now start a single CLI, so they return sooner and use less memory.

Enhancements

  • [CanonicalTailwind.Canonicalizer] Run one warm tailwindcss CLI per resolved configuration, so a single mix format can format apps or directories that resolve to different configurations, such as an umbrella with per-app tailwind profiles or a project using subdirectories with per-directory .formatter.exs files. Each configuration gets its own CLI.

Potential breaking changes

  • [CanonicalTailwind.Canonicalizer] Remove the config-drift error. When one mix format encounters differing configurations, each now gets its own CLI instead of raising.
  • [CanonicalTailwind.Config] Deprecate :pool_size. A single warm CLI per configuration now replaces the worker pool; the option is ignored and emits a warning when set.

v0.1.6 (2026-06-13)

Bug fixes

  • [CanonicalTailwind.Canonicalizer] Detect tailwindcss CLI death immediately instead of waiting out the full :timeout, and name the :timeout option in the timeout error
  • [CanonicalTailwind.Pool] Surface a dead or crashed CLI worker as a clear error instead of an opaque GenServer.call exit
  • [CanonicalTailwind.Pool] Stop the config-drift check from raising on a :tailwind env change that resolves to the same configuration (e.g. an umbrella app carrying an immaterial key like :version_check)
  • [CanonicalTailwind.Config] Track tailwind 0.5.0's version-suffixed binary name in the _build/ LSP fallback, restoring on-save formatting under Expert / ElixirLS
  • [CanonicalTailwind.Config] Detect the CLI version reliably by running with NO_COLOR and reading the full version token, so the minimum-version check is no longer silently skipped on colorized or pre-release banners
  • [CanonicalTailwind.Config] Harden tailwind profile resolution: ignore non-keyword :tailwind globals when auto-detecting, and raise a clear error when a configured :profile names a non-profile key like :version instead of crashing with an opaque Keyword.get/3 error

Enhancements

  • [CanonicalTailwind.Config] Support tailwind 0.5.0's per-profile :version: resolve the binary for the selected profile's pinned version
  • [CanonicalTailwind.Pool] Point the config-drift error at the per-app mix format workaround

v0.1.5 (2026-05-10)

Bug fixes

  • [CanonicalTailwind.Pool] Recover missing canonicalizer workers, restoring long-running LSP sessions after a worker crash
  • [CanonicalTailwind.Config] Locate tailwindcss binary under LSPs that isolate _build/, restoring on-save formatting under Expert and ElixirLS

Enhancements

  • [CanonicalTailwind.Pool] Prevent mixed-config workers by serializing cold start and clearing stale workers from prior incomplete cold starts

Potential breaking changes

  • [CanonicalTailwind.Pool] Raise on canonical_tailwind config drift after the pool has started — umbrella setups that previously formatted concurrently with different formatter opts will now get a loud error instead of silent stale-config behavior

v0.1.4 (2026-04-01)

Enhancements

  • Add configurable :timeout option for CLI response (default 30s) (#6)

v0.1.3 (2026-03-28)

Enhancements

  • Support attributes other than class via attribute_formatters (#4)
  • Validate :binary, :cd, and :pool_size config options at startup
  • Check minimum CLI version against the installed binary, not just the configured version

v0.1.2 (2026-03-25)

Bug fixes

  • Fix Node-based CLI support by setting OS working directory from :cd

v0.1.1 (2026-03-23)

Bug fixes

  • [CanonicalTailwind] Fix newlines in class strings breaking port line protocol

v0.1.0 (2026-03-20)

Initial release.

  • Canonicalize Tailwind CSS utility classes in HEEx templates (sort, normalize, collapse)
  • Delegate to tailwindcss canonicalize --stream via Elixir ports
  • Pool of CLI processes for parallel mix format
  • Works with LSP formatters (Expert, ElixirLS)
  • Configurable pool size, binary path, and tailwind profile
  • Fall back to _build when Tailwind.bin_path() resolves to a nonexistent location (LSP compatibility)