Hologram patch releases

News News & Updates
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I’ll be using this thread to share Hologram patch release announcements. Minor releases will continue to get dedicated threads with blog announcement posts.

All releases are also available on the GitHub Releases page.

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Hologram v0.8.2

Bug Fixes

  • Fix Calendar.ISO.valid_date?/3 undefined when invoking Date.new!/3 in an action (#740)

  • Fix client-side Date struct rendering in templates crashing with :lists.flatten/1 error (#742)

  • Fix :erlang.list_to_binary/1 handling of nested improper-list iodata (#751)

  • Fix :erlang.iolist_to_binary/1 semantics and error handling (#752)

  • Fix call graph module edge handling for accurate dynamic call detection (#755)

  • Fix protocol dispatch edges not added for new implementations during live reload (incremental call graph patching)

  • Fix async MFA detection propagating Task.await/1 reachability through module vertices

  • Fix compiler normalizer to strip import residue aliases from block AST

  • Fix Erlang JS function extraction regex to handle comment lines between Start/End markers (#756)

  • Fix Biome formatter failing on Windows when file paths exceed cmd.exe command line length limit

Enhancements

  • Overhaul call graph traversal for protocols and structs - resulting in more accurate client-side bundles

  • Manually port IO.warn/1, IO.warn/2, IO.warn_once/3, and Application.get_env/3 to JavaScript to reduce client-side bundle size

  • Add debugging mix tasks: holo.compiler.runtime_mfa_cascades, holo.compiler.page_mfa_cascades

  • Include diagnostic details in Biome formatter error messages

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Hologram v0.8.3

Backward Incompatible Changes

  • Remove mix holo.compiler.page_mfa_cascades and mix holo.compiler.runtime_mfa_cascades tasks

Enhancements

  • Compiler groundwork for with expression support (#735)
  • Improve compiler call graph accuracy for Date, Time, NaiveDateTime, and DateTime modules

Bug Fixes

  • Fix bundle size explosion predominantly affecting Ash apps (#775)
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Hologram v0.9.1

A quick patch for a compile-time performance problem recently reported by a user: with deeply nested templates, the Biome formatter could make compilation disproportionately slow and peg CPU. Removing it from the compiler keeps builds fast.

Performance

  • Remove the Biome formatter from the compiler to fix exponentially slow compilation with deeply nested templates (#809)
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Hologram v0.9.2

Bug Fixes

  • Fix SSE response not being halted, raising Plug.Conn.AlreadySentError when Hologram.Router is mounted ahead of another router (#811)
  • Fix Hologram.Router raising a “no persistent term” error when Hologram is disabled, breaking mix test (#813)
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Hologram v0.9.3

Enhancements

  • Support Elixir 1.19 and Erlang/OTP 28 (#835)
  • Support Elixir 1.20 and Erlang/OTP 29 (#837)
  • Port :string.to_graphemes/1 to JavaScript (#844)
  • Port :string.jaro_similarity/2 to JavaScript (#842)
  • Port :lists.suffix/2 to JavaScript (#851)

Bug Fixes

  • Fix compilation crashing with CaseClauseError when an Erlang dependency uses Elixir-style module names, e.g. luerl (#776)
  • Fix client runtime crashing when navigating to or rendering a <Link> for a route that declares a param (#833)
  • Fix :erlang.div/2 raising ArgumentError instead of ArithmeticError for invalid arguments (#848)
  • Fix cp/1/gc/1 chardata iteration dropping multi-element improper-list tails, affecting :elixir_utils.jaro_similarity/2 (#845)
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