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| 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.
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. jetbrains elixir
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. | Feature | IntelliJ Elixir (v2023
For teams already using JetBrains Ultimate (e.g., for JVM work), adding Elixir plugin is a no-brainer. For pure Elixir shops, evaluate the refactoring need. JetBrains’ Elixir support is no longer a second-class citizen. The IntelliJ Elixir plugin delivers enterprise-grade refactoring and cross-file navigation that surpasses LSP-based tools in complex projects. However, it lags in macro introspection, LiveView ergonomics, and runtime performance. Run mix debug