Jetbrains Elixir: New!

Elixir developers often work with PostgreSQL (via Ecto). IntelliJ’s database console and VCS annotate (blame) work seamlessly with Elixir files. 4.2 Where ElixirLS/VS Code Wins 1. Macro expansion on demand ElixirLS can show the expanded macro output by compiling the module. JetBrains does not offer this – a significant gap for advanced metaprogramming.

Example: find all Enum.map(..., fn x -> x end) and replace with Enum.map(..., & &1) . This pattern-based refactoring is unique to JetBrains. jetbrains elixir

In VS Code: Manually search-replace, or use LSP rename (which often misses references in umbrella children due to path misconfiguration). Risk of broken code. Elixir developers often work with PostgreSQL (via Ecto)

IntelliJ: Set breakpoint in handle_call . Run mix debug . Variables show in UI, but inspection of state map sometimes truncates large values. Stepping into :gen_server internal code is possible but verbose. Macro expansion on demand ElixirLS can show the

| Feature | IntelliJ Elixir (v2023.3+) | VS Code + ElixirLS (v0.14) | |---------|----------------------------|----------------------------| | | Contextual, includes local/calls/macros | Comparable, uses Elixir’s code:get_env | | Go to definition | Works for most functions, fails on dynamic dispatch | Similar, but macro expansion via --trace | | Find usages | Excellent, includes usages across umbrella apps | Good, but slower in large repos | | Refactoring | Rename, extract function, inline variable – safe rename works across modules | Very limited (only rename via LSP, no extract) | | Structural Search & Replace | Yes (IntelliJ ultimate feature) – search AST patterns | No | | Quick fixes | Add missing alias, import, generate defimpl | Add alias, generate callback stubs | | Debugging | Works but requires setup; variable inspection can be flaky | ElixirLS debugger via elixir-ls/debugger – more stable | | Performance (large project) | Heavy memory (~2-3GB); indexing can stall | Lighter; incremental updates faster | | Price | Free plugin (IntelliJ Community Edition works) | Free (VS Code free) | 4.1 Where JetBrains Excels 1. Rename refactoring across umbrella projects IntelliJ’s cross-module reference graph enables safe renaming of a function from User.find/1 to User.lookup/1 across all child apps and tests – a task nearly impossible with grep-based tools.

Phoenix LiveView (real-time HTML) is better supported in VS Code due to Tailwind CSS, HTML, and HEEx template tooling. JetBrains handles .heex but with less polish.