Changelog

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0.4.0

Web UI

  • Monaco editor with built-in Elixir syntax highlighting, auto-closing brackets, indentation
  • Elixir intellisense via Code.Fragment.cursor_context — completes DSL macros, modules, fields
  • IDE-style error diagnostics with red squiggly underlines and hover messages
  • Format button via Code.format_string!
  • Example query cards with descriptions
  • Collapsible package groups, loading spinner, sticky editor
  • URL query params (?q=) for shareable links
  • Hex.pm links on package names
  • Load more pagination
  • Thin scrollbar via Tailwind v4.3 scrollbar-thin
  • phoenix_iconify for icons

API

  • Cursor-based pagination (cursor param, next_cursor in response)
  • Rate limiting via Hammer (x-ratelimit-limit, x-ratelimit-remaining headers, 429 on excess)

Query engine

  • DSL limit: clause parsed and respected
  • Kind filtering — def patterns only match def fragments, not modules/expressions
  • Keyset pagination replaces OFFSET in internal streaming (O(1) per page)
  • Preview shows correct absolute line numbers

Security

  • Replaced Code.eval_string with safe AST interpreter (SafeEval)
  • Dune sandbox for evaluating value expressions in predicates
  • Dangerous code (System.cmd, File.read!, etc.) rejected at parse time

Code quality

  • Zero any in TypeScript — proper interfaces for Monaco, LiveView hooks
  • mix volt.js.check (lint + format) added to CI
  • Playwright feature tests for web UI (5 tests)
  • API integration tests with Req (10 tests)
  • Total: 50 unit + 15 feature = 65 tests

0.3.0

  • Web UI with Monaco editor, syntax-highlighted search results, and autocompletion (mix exograph.web)
  • JSON API: POST /api/search, POST /api/query, GET /api/packages, GET /api/stats
  • Consolidated Exograph.Postgres.* namespace (FragmentStore, InvertedIndex, TreeStore)
  • Renamed Query → StructuralQuery to disambiguate from DSL.Query
  • Split DSL executor into focused modules (Predicates, Scope)
  • Removed dead code: legacy Planner subtree, unused Indexer delegator
  • Removed single-implementation behaviour modules (Extractor, FragmentStore, InvertedIndex, TreeStore)
  • Simplified Index struct from 6 fields to 3

Breaking

Module renames — update any direct references:

0.2.0

  • Populate fragment.module with containing module name (97% coverage)
  • Drop redundant symbols jsonb, abstract_hash, mfa_* columns
  • Filter operator/structural noise from references (26% fewer rows)
  • Use SHA-256 for content hash (32B vs 64B)
  • Add examples/index_hex_corpus.exs

Breaking

Schema changes require a fresh index. Drop existing tables and re-migrate.

0.1.0

Initial public release.

  • Postgres-backed indexing for Elixir source code with integer primary keys and normalized terms
  • ExAST-verified structural search with GIN term index acceleration
  • Streaming batched fragment verification with early termination
  • Normalized Ecto schemas for files, fragments, comments, definitions, references, packages, versions
  • Optional Reach call graph extraction (graph nodes and call edges)
  • Ecto-shaped DSL with fragment/definition/reference/call-edge sources
  • Fragment joins with definitions, references, and call edges
  • Multi-join fragment queries (up to 3 joins)
  • Containing-function join semantics via precomputed end_line
  • Fact-first join execution for selective predicates
  • DSL plan validation (bindings, associations, structural predicates)
  • Package/version-scoped indexing and queries
  • Optional ParadeDB BM25 text/code-fact retrieval
  • ExDNA structural similarity search
  • Mix tasks for indexing and searching
  • Tested against 2000 Hex packages (1.8M fragments, 5.5M references, 1M call edges)