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expert-lsp/expert

Expert is an Elixir language server that provides IDE-like code intelligence, including completions, hover information, and refactoring tools. It manages a separate VM to handle compilation, indexing, and search operations, utilizing a modular architecture with dedicated components for AST analysis, fuzzy search, and plugin execution. The system integrates with external tools like Credo for static analysis and Hex for package intelligence, all orchestrated through a GenLSP-based server.

73.2

Strong · 6 August 2026

44k

lines of production code

Elixir

with Erlang

3

bus factor · 98 authors in all

4

measurements over time

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How it got here

2023–2025 · Architecture modernization and engine consolidation

The project underwent a major structural overhaul, removing legacy protocol, remote control, and server applications in favor of a new modular architecture centered around 'Expert', 'Engine', and 'Forge' applications. This period focused on replacing custom implementations with the GenLSP library, introducing a new code intelligence and static analysis engine, and establishing comprehensive test coverage for the refactored codebase.

105 changes

2026 · Search, intelligence, and test coverage

This period focused on expanding the Expert application's capabilities with in-memory fuzzy search and Hex package code intelligence, alongside the introduction of an engine node builder for build management. Significant effort was also dedicated to increasing test coverage across Forge and Expert, including comprehensive suites for refactoring tools, logging, and search indexing.

12 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 6 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 39746de290 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.19. Score the same commit under that rubric and you get the same number.
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