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expert-lsp/expert

Expert is a language server for Elixir that provides code intelligence, static analysis, and search capabilities to editors. It manages project compilation, indexing, and real-time diagnostics, while offering features like code completion, hover information, and refactoring actions. The system is built on a modular architecture with an isolated engine for analysis and a server layer that translates LSP protocols to internal logic.

72.7

Strong · 1 August 2026

44k

lines of production code

Elixir

with Erlang

3

bus factor · 98 authors in all

3

measurements over time

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How it got here

2023–2025 · Expert platform migration and engine rewrite

The project was renamed to Expert and underwent a comprehensive architectural overhaul, replacing the legacy protocol and server implementations with a new GenLSP-based server and a modular Engine for static analysis. This period focused on rebuilding core capabilities such as code intelligence, search indexing, and remote control, while systematically removing obsolete modules and tests to establish a modern, maintainable codebase.

105 changes

2026 · test coverage and search intelligence

This period focused on expanding test coverage for the Forge refactoring and namespace modules, while introducing new code intelligence features for Hex package management. Additionally, a fuzzy search engine with SQLite persistence was implemented for the Expert app, accompanied by comprehensive tests for the search store and indexer.

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 1 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-2026.08.18. Score the same commit under that rubric and you get the same number.
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