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Changelog

All notable changes to cpd (Rust) are documented here. Releases follow Semantic Versioning.

5.0.11

New Features

  • Razor (.razor) support — new tokenizer for Razor files, parsing HTML content and Razor keyword blocks (thanks to @chrisc-onaorg in #829)

Bug Fixes

  • Fix cargo test on Windows by using CARGO_BIN_EXE_cpd or .exe suffix to locate the test binary
  • Fix cargo fmt formatting issues across the workspace

Refactoring

  • Extract methods and optimize intervals in cpd-core (bumped to 0.1.6)

Dependencies

  • cpd-core updated to 0.1.6, cpd-tokenizer updated to 0.1.7 across all dependent crates

5.0.10

Bug Fixes

  • Emit scan-root-relative paths in all reporters when absolute: false (or the default). Previously, jscpd /abs/path from a different CWD left absolute paths in SARIF/JSON/XML/HTML/CSV/Markdown/console output, and Windows/macOS path canonicalization could leave \\?\ or ./ prefixes. Paths are now normalized against the canonicalized scan root (with CWD fallback) and stripped of any leading ./ or .\\ component. Fixes #827
  • Fix --skip-local to match jscpd v4 TypeScript semantics: it now filters clones where both fragments are under the same scan root, instead of only skipping clones in the same parent directory

Refactoring

  • DRY duplication in reporters: extract shared helpers (print_clone_header, print_clone_locations, print_snippet, write_report_file, report statistics, test fixtures, etc.) into cpd-reporter/src/shared.rs. Console, console-full, CSV, JSON, HTML, Markdown, silent, XML, and SARIF reporters now reuse the same implementation, reducing the monorepo's reported duplication ratio from 5.0% to 0.56% and fixing a latent --absolute path relativization bug in the same pass
  • Move blame enrichment from gitoxide to git blame --porcelain; capture elapsed time after blame so timing includes blame work
  • Resolve needless_borrow clippy warnings in CSV and Markdown reporters

Documentation

  • Add Nix and Homebrew install instructions to Rust READMEs. #818
  • Update project homepage URLs to https://jscpd.dev in all Cargo.toml and npm package.json files, add curl install method to READMEs, clean up outdated badges
  • Remove defunct Universal Analytics tracking pixels from all READMEs

5.0.9

New Features

  • GitHub Action for jscpd (Rust v5) — jscpd-copy-paste-detector action for GitHub Actions Marketplace. Scan your repo for copy/paste in CI with uses: kucherenko/jscpd/.github/workflows/action.yml@v5

Bug Fixes

  • Resolve platform binary resolution when cpd is installed as a nested dependency (e.g. in a project's node_modules via a parent package). The runner now correctly locates the platform-specific binary relative to the installed package rather than assuming a top-level install. Fixes #816

5.0.8

Bug Fixes

  • Prevent mmap exhaustion crashes when scanning repositories with more files than vm.max_map_count (default 131 072 on Linux). The walker previously held a live Mmap per discovered file; each rayon worker now opens and drops its mapping within the processing closure, capping concurrent mappings to the thread-pool size (typically 8–32). Fixes #813
  • Fix --pattern not matching relative paths when the scan root is absolute (e.g. CWD). Patterns like src/**/*.ts now match correctly by comparing against both the relative path and the full absolute path, and bare patterns like *.ts gain a **/ prefix to match at any depth. Fixes #811
  • Fix trailing-newline off-by-one in line-count filter: files not ending with \n now count the final line correctly

5.0.7

Bug Fixes

  • Prevent stack overflow when scanning directories containing deeply-nested JS/TS files (e.g. Bun's test/bundler with 320K+ nested for-loops). OXC's recursive-descent parser allocates one stack frame per AST nesting level; pathological inputs now exceed the default 8 MiB thread stack. Fixed by building a local rayon ThreadPool with 64 MiB stacks instead of using the global pool (which silently fails on re-init)
  • Default --max-size to 1mb — files exceeding the limit are skipped at walk time, consistent with jscpd v4's maxSize behavior. This prevents OXC from ever seeing megabyte-scale generated files that would overflow the stack
  • --workers N now correctly takes effect on every run() call (previously build_global() silently no-op'd after the first invocation)

5.0.6

New Features

  • v4 config backward compatibility — .jscpd.json fields path, pattern, ignore, and ignorePattern are now read and applied, matching jscpd v4 behavior
  • ignore and ignorePattern are now distinct: ignore matches file-level globs, ignorePattern matches code-level regex patterns (previously conflated)
  • .jscpd.json path config support — reads scan directories from the path field, resolving relative paths against the config file's directory
  • jscpd npm wrapper package — publishes the same Rust binary under the jscpd name on npm with v5.x versioning
  • --exit-code now matches v4 behavior: accepts optional integer value (--exit-code exits 1, --exit-code 2 exits 2); --threshold and --exit-code are now independent
  • Performance improvements: memory-mapped file I/O (via memmap2) eliminates heap copies of file contents; SIMD-accelerated line counting (via memchr); parallel detection pipeline uses flat_map to avoid intermediate allocations; JS tokenizer no longer clones source strings before parsing (thanks to @auterium, #808)

Bug Fixes

  • Fixed --exit-code to match jscpd v4's --exitCode behavior (was boolean, now optional integer)
  • Fixed unique temp dir generation in reporter tests (added PID to prevent race conditions under parallel test runners)

5.0.4

New Features

  • CLI alignment with jscpd v4: new --absolute, --ignore-case, --formats-exts, --formats-names flags; fixed --threshold, improved --max-size
  • Detection and statistics aligned with jscpd for consistent output across Rust and TypeScript versions
  • Side-by-side blame comparison in console-full reporter
  • Clone list display in console reporter

Bug Fixes

  • HTML reporter now outputs jscpd-report.html at the output_dir root
  • Resolved all clippy warnings across workspace
  • Fixed unique temp dir generation in tests (use as_nanos() instead of subsec_nanos())

5.0.3

New Features

  • Rust-based cpd CLI with full feature parity to TypeScript jscpd
  • Cross-platform binary distribution via npm platform packages (linux-x64-gnu, linux-arm64-gnu, linux-x64-musl, darwin-arm64, darwin-x64, windows-x64-msvc)
  • 13 reporters: json, console, xml, csv, html, markdown, sarif, ai, badge, xcode, threshold, silent, console-full
  • Time reporter for execution timing
  • CLI short-form aliases matching TypeScript jscpd conventions
  • ReportContext data structure for extensible reporter signatures
  • Trusted Publishing support for crates.io via OIDC

5.0.2

Bug Fixes

  • Fixed Vue SFC tokenization to dispatch each block to its own sub-format
  • Fixed entire-file duplicates silently dropped by RabinKarp store flush logic
  • Fixed ReDoS hang on Lisp/Elisp files
  • Fixed crash on malformed package.json when reading config

5.0.1

New Features

  • Initial Rust workspace with cpd-core, cpd-tokenizer, cpd-finder, cpd-reporter, and jscpd crates
  • Cross-format detection for Vue SFC, Svelte, Astro, and Markdown files
  • Shebang detection for extensionless scripts

5.0.0

Breaking Changes

  • First stable Rust release — replaces the TypeScript-based CLI with a native binary
  • Reporter trait signature changed to use ReportContext instead of Statistics directly