Changelog

All notable changes to diffgate are documented here.

[0.1.0] - 2026-03-26

Unified diff parser with file, hunk, and line-level parsing
23 built-in rules across 6 categories (security, blast-radius, config, code-quality, database, dependencies)
Risk scoring with severity weights and 5 level classifications (safe/caution/warning/danger/critical)
Blast radius calculation (file count, line count, category spread)
Gate mode for CI -- fail when risk score exceeds threshold
7 output formats: text, JSON, one-line, Markdown, SARIF 2.1.0, GitHub Actions annotations, PR review comments
5 built-in profiles: strict, security, ci, relaxed, review
Custom rule definitions via .diffgaterc.json with pattern matching and file filters
Diff comparison -- detect new and resolved findings between versions
Batch analysis for multiple diffs
Trend tracking with snapshots, historical analysis, and ASCII sparklines
Change complexity assessment per file and per hunk
CODEOWNERS parsing and ownership analysis
Diff and finding fingerprinting for deduplication
Fix suggestions with configurable templates for every finding
File classification into 8 categories (source, config, test, docs, infra, data, dependency, other)
Category summaries and rule frequency statistics
Git integration (unstaged, staged, branch comparison)
Zero external dependencies -- pure Node.js
446 tests